Which wavelength range corresponds to visible lasers?

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Study for the Bioenvironmental Engineering Apprentice Test Block 6 - Non-Ionizing Radiation. Utilize flashcards and multiple-choice questions with hints and explanations. Enhance your readiness for the exam!

Multiple Choice

Which wavelength range corresponds to visible lasers?

Explanation:
Visible lasers emit light that humans can see, which lies in a window roughly from 400 to 700 nanometers. Describing the range as 700 to 400 nm covers that same interval, just listed in reverse order, so it matches the visible spectrum. The other ranges fall outside visible light—shorter wavelengths are ultraviolet and longer wavelengths are infrared—so they aren’t visible lasers.

Visible lasers emit light that humans can see, which lies in a window roughly from 400 to 700 nanometers. Describing the range as 700 to 400 nm covers that same interval, just listed in reverse order, so it matches the visible spectrum. The other ranges fall outside visible light—shorter wavelengths are ultraviolet and longer wavelengths are infrared—so they aren’t visible lasers.

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