How to distinguish raw eggs, raw eggs?

Put the egg to try on a plate and use two fingers to spin it one by one . . Place the egg to try on a plate and turn it around with two fingers. Raw eggs also, immediately began it turns hard. But ripe eggs (especially nine well-cooked) turn faster and last longer.

It spins so fast that it can't see the shape, but only sees a white sphere, and it can spin on a sharp tip.

This is because a well-cooked egg turns like a solid object; while the raw egg, the liquid egg inside cannot immediately receive the rotation, so due to its inertia, it restricts the movement of the hard shell. The egg now acts as a moving brake.

The mature and mature egg reacts differently when spinning and stops. If you touch the rotating egg with your finger, it stops immediately. As for the raw egg, I still filmed a bit more. It is also because of inertia: The liquid in the living egg continues to move after the hard shell has been restrained. If the egg is cooked, stop at the same time with the outside when it is braked.