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Questions tagged [uv]

Non-visible light with a higher energy and shorter wavelength than violet light, UV is notable for its ability to cause DNA damage.

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Intensity of UVA needed to damage skin and cause ageing

Using a UVA/B measuring device, I was able to determine that approximately $\pu{10 μW/cm^2}$ penetrates a window even when not in direct sunlight. For reference, the intensity of direct sunlight ...
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UV-lamp, DNA and RNA extraction lab

I'm equipping a lab room (~3x5 meters) that's supposed to be used for DNA and RNA extractions. I know about the basic safety precautions when working with RNA and DNA extraction (fresh gloves, ...
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How can the layperson test whether a UVC light sold as "germicidal" is a fake or probably the correct wavelength?

Are there simple ways to test whether a light is likely short wave / UV-C, or at least whether it is probably a fake? Real Example: 2 lights are allegedly germicidal and supposedly emit germicidal ...
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Estimate mutation rate in UVC treated cells

I am wondering how to get a coarse estimate of the number of mutation I obtain doing UVC treatment on eukaryotic cells (microalgae) starting from information such as the survival rate, genome size, ...
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What part of the skin is damaged under sun exposure?

How exactly does extensive sun exposure lead to skin damage and increase cancer risk. In which part of the skin is the sun doing the most damage. Is it in the epidermis or beneath ? I would like to ...
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Calculating approximate dose of UVs received by a virus

I am making a very approximate calculation to determine the dose of UVs received by a virus standing at 1.5 cm from a UV source during a certain amount of time. Please let me know if my train of ...
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