LGBT people can face unique skin health challenges
Gay and bisexual people, as well as those undergoing gender transition, could face unique dermatological issues, an expert says.
Mar 12, 2024
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Gay and bisexual people, as well as those undergoing gender transition, could face unique dermatological issues, an expert says.
Mar 12, 2024
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About one in four people regret at least one of their tattoos. Almost half of those go on to have their unwanted tattoo removed or camouflaged with a new one.
Mar 8, 2024
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A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.
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