Answer:
Described as simply as possible, camcorders record capture visual input and record it real-time to some kind of media-storage unit. This unit can be a cassette tape, a DVD, or even a hard disk drive. Some people use them to record special moments so that they can be reviewed and shown to friends at a later date. Others use them to create entertaining visual narratives for audiences to enjoy. Still more use them to inform others through a "show-and-tell" style of education.

Some camcorders have the ability to film in infrared. When used in this mode, they can find hotspots in wiring and electrical boxes like the one you have in your house for circuit breakers.
First answer by ChaosPortal. Last edit by ChaosPortal. Contributor trust: 3 [recommend contributor recommended]. Question popularity: 2 [recommend question].