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Make a film of water

Let's take a look!

What type of experiment is this?

Experimental procedure and explanation:

  • Applying water to the spoon creates a film of water.
  • This creates a membrane because the water hitting the spoon travels along the spoon; when it leaves the spoon, it flows out in the same direction as the surface of the spoon, and the water spreads around in that direction.
  • The property that an object or thing tries to continue moving in the same direction and at the same speed is called "inertia". Things that are stopped try to stay stopped. Another force (external force) must work to change the movement. Because fluids such as water and air also have mass, they have such inertial properties.
  • Water is an important resource. Be careful not to waste water.
[Keywords] Inertia
[Related items] Cut the water film
[Reference] “The Wonders of Flow,” Japan Society of Mechanical Engineering, Kodansha Blue Backs, P15
“Illustrated Fluid Dynamics Trivia,” by Ryozo Ishiwata, Natsume Publishing, P208-209

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Last Update:3.3.2017