دانلود کتاب میراث انیشتین – فیزیک مدرن در اطراف شما

You’re surrounded by devices that depend on quantum phenomena for their operation—including cameras, clocks, and computers—but even more basic features of the natural world are fundamentally quantum. In fact, everything that’s known about quantum physics starts with the red glow of the heating elements in a toaster.

The glow of a hot object is a very simple and universal phenomenon. Take an object—any object—and heat it up, and it will glow red, then yellow, and then white. The precise color depends only on the temperature. Physicists call this blackbody radiation.