How is low-level laser different from ordinary light?
What will be an ideal response?
? The low-level laser has coherence (unlike ordinary light with nonparallel waves, the laser waves are parallel and identical to each other).
? The low-level laser has monochromaticity (unlike ordinary light with many different wavelengths, the laser waves emit energy of a single wavelength).
? The low-level laser is collimated (unlike ordinary light that has wide divergence for illumination, the laser beam has minimal divergence).
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