Water and Syrup 1

Let's take a look!

Watch the video on YouTube.

What kind of experiment is this?

Experimental procedure and explanation:

• Let us compare the behavior of “thin” water to “thick” honey or syrup.
• When you tilt the plastic bottles, you can see a difference in the speed with which they deform.
• The difference is caused by a property called “viscosity,” which is one of the most important properties of fluids.
• Viscosity measures the resistance to a quick deformation: the more force needed to cause a quick deformation, the higher the viscosity.
• This differs from adhesiveness, such as that of natto (fermented soybeans), which causes it to stick to other objects.
• It requires more force to quickly deform syrup or honey compared to water. This is because they have higher viscosities than water.

[Keywords]	viscosity
[Reference]	“The Wonders of Flow,” Japan Society of Mechanical Engineering Koudansha Blue Backs, pp. 16-21 “Illustrated Fluid Dynamics Trivia,” by Ryozo Ishiwata, Natsume Publishing, pp. 22-29 and 202-203