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Enjoy Fluid Experiments Lab.


Preface

This page is designed so that grade school and middle school students, as well as people in general, can get to know the fascinating world of science and fluid mechanics. This Lab offers “fluid experiments” that you can enjoy using everyday materials around you. The experiments are courtesy of the contributors; they are presented here under the responsibility of the fluids engineering division. Please watch for more enjoyable content that may be added at any time, thanks to Professor Ryozo Ishiwata of Kanagawa Institute of
Technology and others who are supporting this project.
(Videos of experiments are published on YouTube.)


The Japan Society of Mechanical Engineers, Fluids Engineering Division

Contact
To provide content or comments regarding the experiments, please contact the network staff, fluids engineering division, at net-admin@jsme-fed.org
Vol. 58
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Waves, sloshing Waves in a water tank Creating different types of waves in a water tank. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.8.1
Vortex, atmospheric pressure, typhoon Storm surge What is a storm surge that occurs during a typhoon? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.8.1
Forced vortex, pressure
Water level of forced vortex Study of the water level at the center of a forced vortex. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.8.1

Vol. 57
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Curved river, secondary flow Big peach coming down the river While an old woman was doing her laundry in the river, a large peach came floating downstream .
Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.6.1
Curved river, secondary flow Where is the gold dust? What is the speed of the flow of a curved river at each point? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.6.1
Curved river, velocity distribution, separation Speed of flow in a curved river 3 The speed of the flow at each part of a curved river. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.6.1
Relationship between water depth and speed, viscous friction River depth and speed of flow 1 The fluid flow speed in the shallow part of the river. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.6.1
Relationship between water depth and speed, contraction flow River depth and speed of flow 2 The effect of a shallow area in the middle of a river on the fluid flow speed. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.6.1
Vol. 56
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Expansion flow, continuity equation Flow of widening rive Observation of the flow of a river that widens downstream. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.4.1
Contraction flow, continuity equation Flow of narrowing river Observation of the flow of a river that narrows downstream. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.4.1
Curved river, free vortex Speed of flow in a curved river 2 Observation of the flow speed in a curved river. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.4.1
Curved river, secondary flow Secondary flow and sediment in a curved river Observation of secondary flow and sediment formation in a curved river. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.4.1
Curved river Continuously curved river Observation of flow in a zigzag river. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.4.1

Vol. 55
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Depth and pressure, surface tension Water that won’t fall (cup with a hole) Flipping over a filled lidded cup that has a hole in it. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.2.1
Depth and pressure, surface tension Water that won’t fall (pull up cup) Flipping over a cup underwater, lidding the cup, and pulling it out of the water. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.2.1
Depth and pressure, surface tension Water that won’t fall (on a board with a hole) Flipping over a filled cup covered with a board that has a hole in it. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.2.1
Surface tension Letting air out of a hole underwater Flipping over a cup with a hole and submerging it in water results in air escaping, but what happens at the end? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.2.1
Depth and pressure, surface tension Put the lid on the cup and submerge Putting a lid on a cup and submerging it in water. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2019.2.1

Vol. 54
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Pressure, buoyancy Floating and sinking squid Using a Cartesian diver to make a squid. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.12.1
Pressure, buoyancy Floating and sinking jellyfish Using a Cartesian diver to make a jellyfish. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.12.1
Pressure, buoyancy Floating and sinking octopus Using a Cartesian diver to make an octopus. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.12.1
Pressure, buoyancy Garden eel Making a garden eel that comes out and pulls back into a hole Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.12.1

Vol. 53
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Drag,
water resistance		 Mysterious powder Putting blue powder and red powder into a container and inverting its contents. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.10.1
Drag,
air resistance		 Large ball and small ball 2 (same density) Experiment involving two types of balls of different sizes: exchanging their positions vertically and making them fall. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.10.1
Drag,
water resistance		 Rainbow powder Mixing powders of varied colors and submerging them in water. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.10.1
Vol. 52
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated

Viscosity

Air resistance		 Dropping a horizontal disk into a cylinder Drop a light disk into a cylinder. Let us observe how it falls slowly. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.8.1

Viscosity

Air resistance		 Dropping a slanting disk into a cylinder What happens when you drop a slanting disk into a cylinder? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.8.1

Viscosity

Air resistance		 Dropping a circular paper into a cylinder Let us drop a paper cut into a circle into a PET bottle cylinder. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.8.1

Vol. 51
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated

Flow velocity measurement
Drag

Air resistance		 Measuring velocity of flow 1
(Ping-pong ball anemometer) 		Let us measure the wind speed using a Ping–pong ball Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.6.1

Flow velocity measurement
Pitot tube

 Measuring velocity of flow 2
(Measuring flow velocity of water) 		Let us measure the flow velocity of water using a straw Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.6.1

Flow velocity measurement

Pitot tube		 Measuring velocity of flow 3
(Pitot tube) 		Let us measure the wind speed using a straw Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.6.1

Flow velocity measurement

Pitot tube		 Measuring velocity of flow 4
(Inclined Pitot tube) 		Let us tilt the pitot tube and measure the slow flow. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.6.1

Vol. 50
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated

Air resistance

Drag		 Function of wind and rubber
(3rd grade Elementary School Science) 		Wind and rubber can move things. Let us examine the force caused by the wind. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.4.1

Air resistance

Drag		 Force received from wind 1
(Effect of size) 		How does the force received from the wind change depending on the size of an object? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.4.1

Air resistance

Drag		 Force received from wind 2
(Effect of shape) 		How does the force received from the wind change depending on the shape of an object? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.4.1

Air resistance

Drag		 Streamlined shape with low air resistance A shape with a rounded front and a pointed back has a low air resistance and is called a streamlined shape. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.4.1

Vol. 49
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated

Rotary wing

Momentum theory		 Bamboo-copter Let us fly the handmade  bamboo-copter Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.2.1

Rotary wing

Momentum theory		 Wind-powered vehicle A model car that runs by turning a propeller with rubber power Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.2.1

Rotary wing

Momentum theory		 Wind-powered ship A model ship that runs by turning a propeller with rubber power Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.2.1

Rotary wing

Momentum theory		 Model aircraft A model airplane that flies by turning a propeller with rubber power Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2018.2.1

Vol. 48
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Buoyancy Taking out the object that lies at the bottom 1 Take out the object at the bottom of a PET bottle Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.12.1
Depth and Pressure Taking out the object that lies at the bottom 2 Take out the object at the bottom of a PET bottle Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.12.1
Depth and Pressure Surgical Operation? Take out object inside the PET bottle from a PET bottle side cut Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.12.1
Depth and Pressure Taking out stone from PET bottle Take out the big stone inside a PET bottle Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.12.1

Vol. 47
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated

Coanda effect

Momentum theory		 A Balloon that Floats at an Angle (Sequel) Let us attach the tail of a newspaper to a balloon and float it with a dryer Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.10.1

Coanda effect

Momentum theory		 Flying Octopus kite balloon Let us float an 8-legged octopus kite balloon with a dryer Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.10.1

Coanda effect

Momentum theory		 Float a balloon with a stick Let us attach a stick to a balloon and float it with a dryer Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.10.1

Coanda effect

Momentum theory		 Flying Slither Let us float a slither with a dryer Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.10.1
  Bernoulli's principle     Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.10.1
Vol. 46
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Angular momentum theory Turn with a stream of water Rotate the vane wheel placed on the turntable by exposing it to water. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.8.1
Angular momentum theory Sprinkler Rotate the sprinkler using runoff from the straw. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.8.1

Vol. 45
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Inertia Make a film of water Place water on a spoon to make a film of water. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.6.1
Inertia
Surface tension		 Cut the water film Try cutting the film of water with a knife. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.6.1
Inertia
Surface tension		 Water dome Place water on a plastic bottle cap to make a dome of water. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.6.1
Inertia
Surface tension		 Water flower Place water on teacup saucers or a glass to make various shapes. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.6.1

Vol. 44
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Coandă effect,
Air resistance		 Spin around Arrange the balloons in a circle and spin them with a dryer. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.4.1
Momentum theory
Viscous friction		 Spin around the paper tape ring Make a ring with paper tape and turn it with a dryer. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.4.1
Momentum theory
Air resistance		 Aerial balancing toy Try creating a floating aerial balancing toy with the wind from the dryer. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.4.1

Vol. 43
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Momentum theory, pressure Remove a ball from a deep location 1 Remove a ball from a deep location with the wind from a dryer. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.2.1
Vortex, pressure Remove a ball from a deep location 2 Remove a ball from a deep location with the wind from a dryer using another method. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.2.1
Momentum theory, vortex, pressure Remove a rod from the tube Take two bars out of the tubes with the wind from a dryer. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.2.1
Momentum theory, vortex, pressure Aerodynamic Olympics Compete for time to clear 10 events with the wind from a hair dryer. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.2.1

Vol. 42
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Momentum theory, pressure Remove a ball or egg from the tube Remove a ball or egg from the tube with the wind from a dryer Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.12.1
Slither Remove a caterpillar-shaped object from the tube with the wind from a dryer. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.12.1
Remove a cone from the tube Remove a cone from the tube with the wind from a dryer. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.12.1
Remove the disk from the tube Remove the disk from the tube with the wind from a dryer. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.12.1
Ball that doesn’t quite seem to come out Attempt to remove a ball from a tube with the wind from a dryer, but the ball will not come out. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.12.1
Vol. 41
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Separation,
Flow visualization		 Looking at flow with coffee and milk 1 (behind a card) Float the milk on the coffee and move the card Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.10.1
Separation,
Flow visualization		 Looking at flow with coffee and milk 2 (behind a square rod) Float the milk on coffee and move the square rod Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.10.1
Separation,
Karman vortex street,
Flow visualization		 Looking at flow with coffee and milk 3 (behind a straw) Float the milk on coffee and move the straw Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.10.1

Vol. 40
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Viscous friction
Tube friction loss		 Spin around the thread ring Pass a thread through the side hole of the straw, tie a ring, blow the straw, and turn this ring. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.8.1
Tube friction loss Is air sucked in or blown out? Let's see if air is sucked in and blown out from the side hole of the pipe. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.8.1
Momentum theory
Coandă effect		 Fountain with a dryer? Attach plastic strings to the dryer to make it look like a fountain. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.8.1
Momentum theory
Coandă effect		 Water hose Attach plastic strings to the blower to make it look like a water hose. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2017.10.1

Vol. 39
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Depth and pressure,
Surface tension		 Stick a round object in a plastic bottle Let's stick a round object in an upside-down plastic bottle. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.6.2
Depth and pressure,
Surface tension		 Remove a ping-pong ball from water Attach a ping-pong ball to a plastic bottle turned upside down in the water and pull it up. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.6.2

Vol. 38
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Depth and pressure
Surface tension		 Scoop the liquid with a straw Scoop the fluid by placing a straw in the fluid Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.4.1
Depth and pressure When the plastic bottle is upside down Try to stand a plastic bottle filled with water upside down from the water surface. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.4.1
Depth and pressure Turn a plastic bottle with a hose upside down Connect the hose to a plastic bottle filled with water and put the other end on the water surface. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.4.1
Depth and pressure
Surface tension		 If you make a hole in the middle of a straw[Question][Answer] Put the liquid in the straw and cover the top with your finger. If you make a hole midway through... Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.4.1

Vol. 37
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Buoyancy When ice melts [Question][Answer] Will the water surface rise or fall when the ice floating on the water melts? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.2.2
Buoyancy When ice on a floating island melts [Question][Answer] Will the water surface rise or fall when the ice on the floating island melts? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.2.2
Volume When discarding water in a cup [Question][Answer] Will the water surface rise or fall when the ice on the island melts? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.2.2
Buoyancy When discarding water in a cup [Question][Answer] Will the water surface rise or fall if you discard the water in the cup placed on the floating island? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.2.2
Buoyancy When sinking a stone in water [Question][Answer] Will the surface of the water rise or fall if the stone in a cup floating on water is discarded? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2016.2.2
Vol. 36
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Flow in a gap, Viscous friction,
Added mass		 Quickly Lifting a Plastic Sheet Lay tissue paper on a table; place a plastic sheet on it; and try pulling the plastic sheet upwards Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.12.1
Flow in a gap,
Viscous friction		 A Simple Air Cushion Make a simple air cushion using a plastic bag Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.12.1
Flow in a gap,
Viscous friction,
Added mass		 Breaking A Disposable Chopstick Place a disposable chopstick on the edge of a table and try to break it with a stick Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.12.1

Vol. 35
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Atmospheric pressure Sticking a Plastic Sheet to a Table Place a plastic sheet on a table and try pulling the plastic sheet upwards Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.10.1
Secret of Suction Cups Discover why a suction cup is shaped the way it is Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.10.1
Sticking a Plastic Sheet to the Ceiling Try sticking a plastic sheet to the ceiling Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.10.1

Vol. 34
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Entrainability,
Viscous resistance		 Catching Particles at the Bottom of a Volume of Water Use a cup to catch tea leaves at the bottom of a volume of water Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.8.1
Entrainability,
Viscous resistance		 Catching Particles Floating in Water Use two blocks to catch scraps of paper floating in water Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.8.1
Entrainability,
Viscous resistance		 Catching Particles Floating on the Surface of Water Use a cup to catch particles floating on the surface of water Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.8.1

Vol. 33
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Air resistance,
Terminal velocity 		Slowly-Falling Cupcake Cups Watch cupcake cups fall slowly because of air resistance Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.6.1
Water resistance, Terminal velocity Slowly Sinking Cupcake Cups Watch a cupcake cup slowly sink when it is submerged in water Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.6.1
Air resistance, Terminal velocity Two Cupcake Cups Coming Together in the Air Try dropping two cupcake cups, and see them come together in the air Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.6.1
Air resistance, Separation Falling Slowly, Falling Quickly Try changing the falling speed of paper by folding or rolling the paper Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.6.1

Vol. 32
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Uniform flow Speed of Flow in a Straight River Observe the flow of particles floating on a straight stretch of river Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.4.1
Swirl flow, Free vortex Speed of Flow in a Curved River Observe the flow of particles floating on a curved stretch of river Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.4.1
Secondary flow Sediment in a Curved River Observe the sedimentation of particles in a curved stretch of river Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.4.1
Swirl flow, Secondary flow Flow in a Curved River that is Shallower on the Inside Observe the flow when a curved stretch of river is shallower on the inside Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.4.1

Vol. 31
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Separation, Air Resistance Quickly Dropping Light Objects Introduces a method for quickly dropping a shopping bag or tissue paper. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.2.1
Air Flow Behind a Board How does air flow behind a board that is placed upright while the wind blows? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.2.1
Gaining a Benefit Behind a Large Object Gain an advantage by running behind a large player during a marathon, etc. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2015.2.1

Vol. 30
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Surface Tension Camphor Boat Cause a boat to move using a neutral detergent. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.12.3
Three One-Yen Coins Drip a neutral detergent in the center of three one-yen coins that are floating on water. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.12.3
Moving Particles on the Water Surface Move numerous particles floating on the water surface. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.12.3

Vol. 29
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Surface Tension Swelled Water Surface What happens when you fill a teacup to the brim with water? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.10.1
Water Droplets Gliding on the Surface of Water Drip water onto the surface of water to create a water droplet. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.10.1
Surface Tension,
Water Repellency		 Floating a 10-Yen Coin What happens when a 10-yen coin is placed on a tissue paper floating on water? Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.10.1
Blowing Away Tissue Paper Blow away a tissue paper floating on water with a single breath. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.10.1

Vol. 28
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Coanda Effect, Separation Mole Jump Cause a mole shaped model to float upward by blowing on it with a blower. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.8.1
Magnus Effect Corner Kick When rotation is skillfully communicated to a ball during a corner kick, the player can directly aim for the goal. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.8.1

Vol. 27
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Coanda Effect Drawn in Spoon When a spoon is made to contact water flowing from a faucet, the spoon is drawn into the flow. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.6.1
Supporting a Ball with a Stick Try balancing a ball on a stick. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.6.1
Flow Around the Back of a Cylinder See how air flows when wind from a fan and a dryer is aimed at a cylinder. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.6.1
Circling Around a Pipe Try making water circle completely around a pipe when the pipe is squirted with water from a squirt gun. Prof. Ryozo
Ishiwata,
Kanagawa Institute
of Technology
2014.6.1

Vol. 26
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Water depth and pressure, Potential energy Water Fountain 1 (Using Difference in Water Levels) A simple water fountain created using difference in water levels. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
4.1.2014
Pressure Water Fountain 2 (Using Pressure) Pressure inside a container is increased to create a water fountain. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
4.1.2014
Pressure Water Fountain 3 (Using Negative Pressure) Pressure inside a container is decreased to create a water fountain. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
4.1.2014
Pressure, Buoyancy Water Fountain 4 (Cartesian Diver) A water fountain is created using a Cartesian Diver. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
4.1.2014
Water depth and pressure, Potential energy Water Fountain 5 (Heron’s Fountain) A mysterious water fountain created using difference in water levels, with the water fountain spouting higher than the level of the water source. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
4.1.2014

Vol. 25
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Coanda effect Blowing Out a Candle Behind a Cylinder Blow out a candle placed behind a PET bottle. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
2.1.2014
Separation Candle Behind a Flat Plate What happens when you blow on a flat block placed in front of a candle? Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
2.1.2014
Coanda effect Blowing Through a Gap Blow out a candle by blowing through a gap between two cylinders. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
2.1.2014

Vol. 24
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Momentum theory,
Pressure		 Floating an Egg When an egg is placed in a cup and the cup is filled with water, the egg floats upward. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
12.1.2013
Air resistance, Drag, Pressure Eject a Ping Pong Ball with Your Breath When you insert a ping pong ball into a cup and blow vigorously, the ping pong ball flies out. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
12.1.2013
Momentum theory, Pressure Force When Flow is Pushed Back Measure the force created when airflow from a dryer is applied to a bowl. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
12.1.2013
Viscous friction Slowly Dropping Ball When a ball is dropped into a cylinder, it drops slowly. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
12.1.2013
Momentum theory, Pressure Removing a Ball from a Cylinder Apply airflow from the top to a ball in a cylinder to float the ball upward. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
12.1.2013
Momentum theory, Pressure Removing a Cup from a Cylinder Apply airflow from the top to a cup in a cylinder to float the cup upward. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
12.1.2013

Vol. 23
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Air resistance, Terminal velocity Raindrop Float a water drop by placing it in an updraft. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
10.1.2013
Parachute A parachute will increase air resistance and slow down the speed of fall. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
10.1.2013

Vol. 22
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Magnus effect Magnus Pipe This toy flies in a mysterious way by utilizing rotation. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
8.1.2013
Choke, Bernoulli’s theorem Sprayer 1 (With Necked Midsection) By pinching a straw’s midsection, suck water through a hole on the straw surface. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
8.1.2013
Separation Sprayer 2 (Often Misunderstood Principle) Pressure will not decrease by simply blowing air through a straw. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
8.1.2013
Viscous friction Inflate in a Single Breath Inflate a slender bag by blowing a single breath into the opening from a distance. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
8.1.2013

Vol. 21
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Jet, Vortex ring Air Cannon
 Shoot air through a circular hole in a cardboard box. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
6.1.2013
Vortex, Vortex ring Ring of Air
 Make a ring of air by connecting small air bubbles inside a tank. Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
6.1.2013
Square Ring of Air?
 Would shooting water out of a square hole make a square ring of air? Prof. Ryozo Ishiwata, Kanagawa Institute of
Technology
6.1.2013

Vol. 20
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Law of conservation of angular momentum The Shorter the String, the Faster it will Turn
 Tie a string to a ball and rotate. Making the string shorter makes it rotate faster. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.4.2013
Law of conservation of angular momentum, Free vortex Inward Flow Increases the Rotational Speed
 Place a tray filled with water inside a rotating tub. Draining the water creates a vortex. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.4.2013
Coriolis force, Free vortex In Which Direction does a Typhoon Spin?
 Use a rotating tub to study how typhoons and tornadoes rotate. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.4.2013

Vol. 19
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Drag Yacht Car 1
(Tailwind)
 Use a tailwind to make a yacht car (car with a sail) run. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2013
Lift Yacht Car 2
(Side Wind)
 The yacht car runs faster with a side wind than with a tailwind. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2013
Yacht Car 3
(Headwind) 		Make a yacht car run in the windward direction. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2013

Vol. 18
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Lift Flat Plate Airfoil
 Blowing air at a flat plate held at an angle creates lift. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.1.2012.
Down Force
 Racecars use airfoils to create down forces (downward lift). Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.1.2012.

Vol. 17
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Drag, Air resistance Heavy Ball and Light Ball
 Between a heavy ball and a light ball of the same size, which one falls faster? Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
10.1.2012.
Drag, Air resistance Large Ball and Small Ball
 Between a large ball and a small ball of the same weight, which falls faster? Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
10.1.2012.

Vol. 16
 *The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Buoyancy Cartesian Diver that Floats when Squeezed
 A Cartesian diver that floats when squeezed, contrary to the typical type. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
8.1.2012
Buoyancy, Water pressure The Bowls that Won't Come Apart 1
 Put two bowls together, submerge them in water, and release one hand. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
8.1.2012
Buoyancy, Water pressure The Bowls that Won't Come Apart 2
 The two bowls will come apart when moved closer to the water surface. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
8.1.2012

Vol. 15
*The page for each experiment will be displayed by clicking on the title.
Category Title Content of the experiment Contributor, Last updated
Siphon principle Siphon Principle
 Drain water from a tank using the siphon principle. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
6.1.2012
Pipe friction loss Short Hose and Long Hose
 Compare the difference in flow volumes between short and long hoses. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
6.1.2012
Pipe friction loss Large-Diameter Hose and Small-Diameter Hose
Compare the difference in flow volumes between large- and small-diameter hoses. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
6.1.2012
Siphon principle Disappearing Juice
 You get a little greedy and add more juice to the cup, only to see it disappear. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
6.1.2012

Vol. 14
    *The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Vortex Centrifuge
 Create a forced vortex by rotating the basin. Tea leaves will separate and accumulate around the edge of the basin. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.1.2012
Updated 5.28.2012
Secondary Flow Collecting Tea Leaves
 Collect tea leaves at the bottom of a cup using a secondary flow. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.1.2012
Updated 5.28.2012
Secondary Flow Secondary Flow Inside a Basin
 Stop the basin from a forced vortex condition. Tea leaves accumulate at the center by a secondary flow. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.1.2012
Updated 5.28.2012
Secondary Flow Flow in a River at a Corner
 Emulate a secondary flow formed at corners of rivers to see how soil accumulates at the inside of the corners. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.1.2012
Updated 5.28.2012

Vol. 13
   *The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Air mass Large Balloon, Small Balloon
 Bang a large balloon against a small balloon in midair. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2012
Added mass Added Mass
 Crack a styrene foam board floating on water. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2012
Added mass Master of Karate
 Crack a styrene foam board by hitting it. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2012
Momentum Theory Jet Propulsion
 Obtain propulsion from air that exhausts from a balloon. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2012
Flow around an object Blowing Air across a Paper
 Blow on the top and bottom of a paper to make it rise. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2012

Vol. 12
  * The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Buoyancy Volume Measurement
 Measure the volume of an object using buoyancy. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.1.2011
Surface tension Floating Japanese Penny
 Float a Japanese penny on water. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.1.2011
Five-yen Coin Lens
 Form a water film on a five-yen coin to form a lens. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.1.2011

Vol. 11
    * The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Bernoulli’s theorem A Balloon That Sticks to the Ceiling
 Stick a balloon to the ceiling, provided the gap between the disc and the ceiling is small enough. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
10.1.2011
Blow Air Between Two Sheets of Paper
 Draw two sheets of paper toward each other when air is blown between them. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
10.1.2011
Blowing Air Over a U-shaped Piece of Paper
 Blow on a U-shaped paper, but it will not be blown away. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
10.1.2011
Separation Blowing Away a Japanese Penny
 Blowing away a Japanese penny. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
10.1.2011

Vol. 10
    * The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Fluid energy The Height of Water and Its Energy
 Watch how the speed of flow from a hole depends on its height. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
8.1.2011
Vortex Forced Vortex
 Form a forced vortex and observe the water surface. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
8.1.2011
Cavitation Cavitation
 Pinch a section of a hose to create cavitation. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
8.1.2011

Vol. 9
    *The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Fluid dynamic drag Jump with Buoyancy 1 Find differences in water resistance by using buoyancy to make a cube, a sphere, and a cone jump out of water. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
6.9.2011
Jump with Buoyancy 2 Make three kinds of plastic bottles jump due to buoyancy. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
6.9.2011
Dolphin Jump Confirm that a streamlined shape has little resistance. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
6.9.2011

Vol. 8
    * The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Separation vortex Sinking a Japanese Penny Underwater Watch a Japanese penny flutter as it sinks in water. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.1.2011
No-Spin Shot Watch a ball, launched without spin, change its trajectory inconsistently. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.1.2011
Viscosity Sinking a Japanese Penny in Oil Watch a Japanese penny sink in oil. It will not flutter because of viscosity. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.1.2011

Vol. 7
    * The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Depth and pressure Water that Won't Fall Fill a glass with water, cover it with a lid, and turn it upside down. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2011
Water that Won't Overflow Cut a slit on the side of a plastic bottle and open it up. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2011
Vortex Free Vortex and Forced Vortex Create two different types of vortices. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.1.2011

Vol. 6
    *The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Wind car Wind Car 1 (Spool of Thread Type) Make an interesting toy that runs on wind energy. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.1.2010
Wind Car 2 (Gear Type) Make a wind car that transmits power through crown gears. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.1.2010
Wind Car 3 (Semi-spherical Cup Type) Make a car that moves by wind acting on semi-spherical cups. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.1.2010
Wind Car 4 (Windmill Type) Make a wind car that uses a rubber band to transmit power to the axle. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.1.2010
Wind Car 5 (Brush Type) Make a wind car that does not have tires, but moves on a brush. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.1.2010

Vol. 5
  *The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Magnus effect Magnus Cup Find the relationship between a spinning object and the surrounding flow. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
8.5.2010
Accelerated motion Acceleration of Water A light ball starts to move before a heavy ball does in accelerating water flow. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
8.5.2010
Carrying Water A tip on carrying water in a glass. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
8.5.2010
Surface tension Plastic Bottle with Holes Why water will not spill out of a plastic bottle that has holes in its sides. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
8.5.2010

Vol. 4
*The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Bernoulli’s theorem Two Plastic Bottles Blow air between two plastic bottles Prof. Ryozo Ishiwata,
Kanagawa Institute of Technology
6.1.2010
Trapping a Ball Levitating a ball by blowing air. Prof. Ryozo Ishiwata,
Kanagawa Institute of Technology
6.1.2010

Vol. 3
    *The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Viscosity Water and Syrup 1 Compare the speeds of deformation of water, honey, and syrup. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.1.2010
Water and Syrup 2 Rotate cups with water or syrup in them. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
4.1.2010

Vol. 2
    *The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Flow around an object Lifting a Huge Balloon with Air (Related to A Balloon That Floats at an Angle) Float a balloon having a diameter of 90 cm. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.5.2010
The Principle behind Airfoil Study the airfoil principle, which is often misunderstood. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.5.2010
Coanda effect A Single Plastic Bottle Plastic bottles that are drawn to the wind source. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.5.2010
Circle and Square 2 (Blow up) Use a dryer to lift a sphere and a cube. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.5.2010
Circle and Square 3 (Flow Field) Observe the flow around a cylinder and around a rectangular box. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.5.2010
A Stroll with A Ball Watch a ball follow a flow. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
2.5.2010

Vol. 1
    *The page for each experiment can be accessed by clicking on its title.
Category Title Content of the experiment Contributor, Last updated
Coanda effect Circle and Square 1 (Which side will it fall toward?) Blow on a paper carton to make it topple. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.2.2009
Flow around an object Snow Man Use a straw to blow the head off a snowman. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.2.2009
A Cup that Rolls Toward You Roll a paper cup toward you by blowing on it with a straw. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.2.2009
A Balloon that Floats at an Angle Levitate a balloon at an angle using a dryer. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.2.2009
Effect of spinning Spinning Eggs How to tell a raw egg from a boiled egg without removing the shell. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.2.2009
Turning Bucket A bucket that starts to rotate again after being stopped. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.2.2009
Effect of buoyancy Cartesian Diver An interesting toy that floats and sinks. Prof. Ryozo Ishiwata,
Kanagawa Institute of
Technology
12.2.2009
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Last Update：2.6.2024

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