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Transcript

Physics of an Egg Shell

Egg Shape

Sources

  • http://www.stevespanglerscience.com/lab/experiments/impossible-egg-crush
  • http://www.physics.org/interact/physics-to-go/one-in-the-hand/

Questions:

  • Because of the eggs shape, it gives it great strength, despite its fragility.
  • it is a 3-dimensional arch, which is one of the strongest architectural forms
  • What is the second layer of the egg called? (right under the shell)
  • What type of shape is the egg?
  • What are the strongest parts of the egg?

The Egg Shell

The outer part of the egg is the Shell, right underneath that is the outer shell membrane. These two parts are like the eggs barriers and walls so it wont break.

So whats the trick?

  • Take in volunteers to try to break an egg
  • watch them fail (maybe some will actually break it... doesn't matter...they cheated or are The Hulk)
  • You will try to break the egg with only one hand in your palm without using your fingers.
  • First it will be the top part and bottom of the egg (i will show you)
  • Then after, try breaking it sideways, if you have enough force and strength you can break it.

Eggs Strength

  • The eggs strongest points are the top and the bottom.
  • The curved structure means that applying pressure to any particular area actually spreads the force out over the entire egg, meaning just squeezing it won't cause it to break.

Why didn't they break?

The egg will not break because by completely surrounding the egg with your hand, the pressure you apply by squeezing is distributed evenly all over the egg instead of one direct point. which is usually why people always hit it or apply force in one certain area of the egg.

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