Word

Words are used every day. People say words can be a powerful weapon or something great to brighten someone's day. My view on it is that they are simply a tool, and like a tool, they can be used to destroy or construct. Nowadays you see lots of "verbal warfare" where people just go back and forth at one another using their words to destroy. This is often seen in lots and lots of TV shows as a form of entertainment the most infamous being Jerry Springer.

ernfrirood light

Infrared light has a frequency below what we can see in the visible spectrum. It is often used for heat imaging cameras and night vision goggles. Almost everything emits infrared light of some sort. Infrared is also used in TV remotes and some fiber optic cables. Infrared is also used to discover different parts of the universe.