Physics

2021-10-19 18:09:27 ​Energy doesn't go anywhere

Energy cannot run out. Just as, for instance, there is no fuel in the car, there is no energy to go anywhere.

Energy passes from one form to another. This statement is based on the law of conservation of energy, which says that energy cannot be created from nothing and cannot be destroyed: it can only be transferred from one form to another.

Imagine a full-flowing river dammed by man, where a huge mass of water has potential energy. The water produces work, it turns the turbine.

Wind also has energy; it comes from the uneven heating of the atmosphere by the sun, the unevenness of the earth's surface, and the rotation of Earth.

The velocity of the wind determines the amount of kinetic energy, which can also be converted into the mechanical energy of the turbines. The turbines, in turn, produce the electric current that comes into our homes and lights lamps, makes computers, kettles, irons...

The energy doesn't go away. Открыть/Комментировать

2021-10-19 17:04:17 The New York Times is on Telegram now!

A project broadcasting information from a legendary media outlet — @nytimes Открыть/Комментировать

2021-10-18 18:04:01 Supermassive black holes

At the center of our Milky Way, there is an extremely massive black hole millions of times heavier than the Sun.

Such supermassive black holes have also been found in the heart of other galaxies. They were able to be calculated by observing the interstellar gas movement

It is assumed that the center of each galaxy is a giant black hole. Открыть/Комментировать

2021-10-17 18:03:15 Extraordinary Startup – Programmable Clothing

Now before you go out, you don't have to worry about any part of your clothes not matching the color

Saw this startup on the channel @startups_tg Открыть/Комментировать

2021-10-16 18:03:10 Silver crystal growth on copper wire.

Such a beauty… Открыть/Комментировать

2021-10-15 18:29:01 Magnetic Slime

A toy for young physicists! Открыть/Комментировать

2021-10-14 19:33:47 Helicopter physics

A helicopter, unlike an airplane, is capable of rising vertically upward.
Lift force is provided by the bearing propeller. However, the rotation of such a propeller, according to Newton's Third Law, should cause the body to rotate in the opposite direction, which would turn the machine into a real merry-go-round.

To avoid this, either a second propeller rotating in the opposite direction is placed over the first propeller, or a tail rotor is placed on the tail. In addition to maneuvering itself, it prevents the hull from spinning out, neutralizing the movement of the main rotor. Открыть/Комментировать

2021-10-13 20:17:01 Wind generator with photovoltaic panel and energy storage for street lighting. Открыть/Комментировать

2021-10-12 19:31:04 Low pressure air syringe

Under the influence of a strong electromagnetic field, the gas in the syringe is ionized and transformed into cold plasma Открыть/Комментировать

2021-10-11 19:04:06 Dissolution of gold in mercury

The process by which gold is dissolved in mercury is the basis of a method for purifying the noble chemical element from natural impurities, and is used in the extraction of the precious component from the rock to cover the surface of products. Открыть/Комментировать