How thick is the crust of the earth?
Sometimes likened to the shell that covers an egg, the layer of rock or crust that covers the surface of the earth is, on average, 22 miles thick.
The sensation, called neurapraxia, usually occurs when a nerve is compressed between a bone and another hard object. Blood continues to circulate through the affected area.
In our galaxy alone, there are about 100 billion stars. In the universe that we can see, the number of stars is estimated at 10^22.
Glass is generally made of three components: silica, in the form of sand; an alkali flux, such as soda or potash, which promotes fusion; and lime, which stabilizes the mixture. In the process of being heated and then cooled, glass loses its crystalline nature and becomes an amorphous but rigid substance. Like a solid, it…
Brass is an alloy of copper and zinc. Bronze is a more durable mixture of copper and tin.
Avoirdupois weight is the system we use whenever we measure a grain, dram (27.3 grains), ounce (16 drams), or pound (16 ounces).
Balding occurs when hair follicles shrink and become less productive. Instead of the new hairs being cultivated to replace the ones that fall out naturally each day, they are allowed to remain embryonic, at the most, in a light, peach-fuzz stage. Probably some hormonal action triggers the follicles to behave this way, but it is…