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Multiple Choice

The Woods lamp emits which category of light?

Wood’s lamp relies on ultraviolet light to reveal what the eye can’t see under normal lighting. It emits UV-A, a long-wave ultraviolet light (around 365 nm). In a dark room, certain substances in or on the skin will fluoresce when excited by this UV light, so you see visible colors that highlight irregularities or infections. This makes it a useful diagnostic aid in esthetic work for spotting things like fungal infections (which produce characteristic fluorescence) and pigment or hydration changes. It’s not about visible light, microwaves, or infrared; the utility comes from observing fluorescence patterns caused by UV exposure.

Wood’s lamp relies on ultraviolet light to reveal what the eye can’t see under normal lighting. It emits UV-A, a long-wave ultraviolet light (around 365 nm). In a dark room, certain substances in or on the skin will fluoresce when excited by this UV light, so you see visible colors that highlight irregularities or infections. This makes it a useful diagnostic aid in esthetic work for spotting things like fungal infections (which produce characteristic fluorescence) and pigment or hydration changes. It’s not about visible light, microwaves, or infrared; the utility comes from observing fluorescence patterns caused by UV exposure.