When scientists talk aboutelectromagnetic radiation what are they really describing?
Electromagnetic radiation is also known as electromagnetic waves. That are produced by the motion of electrically charged particles. Electromagnetic energy is a term used to describe all the different kinds of energies.
Scientists use scientific notation to compute very large or very small numbers. Scientists deal in very large numbers and they need a shorthand way of writing them out as for example 999,000,000,000,000,000,000 = 9.99*10^20 in scientific notation. Because sometimes numbers get really big or really small. Because sometimes numbers get really big or really small.