Incredible scientific knowledge in life

1. It is a mechanical device called Cubli that can stand steadily on top or edge without relying on a support. The secret is that it has a high-speed rotating flywheel on each of its three sides. This is actually a high quality gyroscope.

When rotating any object, effect of stabilizing axis of rotation occurs. For example, a gyroscope cannot stand still, but when turned, it can stand firmly, and faster it is, more stable it is. is law of conservation of angular momentum of reflection. In this device, normal directions of three vertical surfaces are stabilized by a flywheel, which provides significant stability in three-dimensional space.

The law of conservation of angular momentum, like law of conservation of momentum, conservation of mass-energy and law of conservation of charge, is "constitution" of universe, and so far no exceptions have been found.

2. This kind of blue sand, since its surface is not absorbed by water, but by oily substances, was originally used to remove oil seeped into sea water, but unfortunately it is difficult to use on a large scale due to its high cost. It has gradually become a toy in ​hands of people. I just don't know what's going on!

3. The magical technology of water transfer laser printing. This printing technology is to cover water-soluble film with a pattern on water first, and then wait for pattern to dissolve, then paste part you want to print and rotate. it's around, pattern is printed successfully~ This technique is commonly used to decorate cars~

4. Incredible Saw: A chainsaw equipped with a capacitor safety device, as long as chainsaw touches flesh, it will instantly stop. In photo, a test using a sausage, when sausage was touched, chainsaw instantly stopped, and sausage was not damaged!

5. Infrasonic weapons can produce effect of destroying structure of objects from inside through high-frequency infrasonic waves. Even though it's invisible, it actually feels like you're picking up a puncher and breaking things.