BVIS HANOI (VV)

FOLDING EGG - EXPLANATION

The trick is really simple. Vinegar has acid in it so the egg shell slowly dissolve in the liquid, leaving behind only the egg membrane. As you toss it in the air, air goes into two smal holes you've created earlier, so it turns back into its original shape. Make sure you rinse off the membrane before testing our folding egg. :D. If you can, as the process is going, take some time to try wiping the egg skin off, you'll see the result. Try to watch the egg carefully, you'll see some skin floats up to the top of the water.