What do you mean by laser “radiation”? Does it cause cancer?

Most lasers emit energy in the form of light such as from a common household light bulb, not to be confused with something that is "radioactive." Others emit beams that are invisible to the human eye, such as ultraviolet or infrared radiation. In general, laser radiation is not in itself harmful, and behaves much like ordinary light in its interaction with the body. Laser radiation should not be confused with radio waves, microwaves, or the ionizing x-rays or radiation from radioactive substances such as radium.

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