Engineering Science

The Crookes radiometer is a very interesting thing. It works, it seems, simply and the mechanism is obvious. A turntable is placed in a tightly sealed flask with a rarefied gas. If you shine a flashlight on the blades of the turntable, then it starts spinning. And here is the main question...Why? 😏 The question remained controversial for a long time and the physicist did not understand "why" themselves, but in the end there was some general opinion. Everyone immediately remembers Lebedev's experiments and light pressure. But that's not the effect here, and if the conversation was about light pressure, then we wouldn't call this thing a radiometer. The effect that makes the turntable spin is much more interesting. This is a radiometric effect. The radiometric effect is the phenomenon of the movement of unevenly heated bodies placed in rarefied gases in the direction from the more heated side to the less heated side. The unevenness of heating is usually carried out...

😐 Something like the battle of the boiler and the refrigerator is subconsciously expected here. It implies some kind of spectacular interaction. After all, the huge values of gravity and incredible attraction should not remain unnoticed when meeting. And here's the next question...One hole absorbs everything in its path, the second one does the same. Will they devour each other? Black holes will really just swallow each other up. There is even such a term "merging of black holes". When black holes merge, there is no grand explosion or anything like that. Imagine two soap bubbles connected to each other and floating on the surface of the water. In the end, they suddenly merge into one big soap bubble. Black holes also "touch" and immediately form one larger object. They will fluctuate from merging until eventually they find equilibrium again in an almost perfect sphere. But the gravitational waves they emit will be simply amazing. They will be simply gigantic an...