Why don't we say there the star shines?
Hello I'm flying to Iraq in the summer, and temperatures there are around 50 degrees. What vaccinations do I need to survive there? thanks in advance
Neutrinos are said to have rest mass and a speed lower than light. How should this be determined? Even if a neutrino interacts and is detected through particle creation, what do the measurements tell us about the neutrino's mass and speed? Even if the momentum of the neutrino were known, exact values for mass and…
It can be seen that the cross section of radiation of shorter wavelengths becomes relatively smaller at a scattering angle of >90°: Is this because higher energy photons do not hit the electrons and no interaction occurs? Or do the electrons absorb the radiation completely? Relative wavelength increase for wavelength difference from original to new…
Hey, I'm supposed to present the following problem in physics class on Monday. Unfortunately, I'm having a hard time with this problem and don't know what steps I need to take to solve it. I hope someone can help me! Thanks in advance!
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Afaik can’t be answered so much.
The color only refers to the visible light – dark absorbs light rather and converts it into heat. Bright colors reflect light rather.
Whether this also applies to UV light, however, depends on the color used.
But when it comes to how much (UV) light is transmitted_ depends more on the material itself. The thicker, the less comes through. And depending on the type of material there are also differences.
It doesn’t have much to do with the other. UV steel is in the invisible area, so it doesn’t matter what a fabric/material does in the visible area.
The type of material and its thickness is much more decisive. And cotton now consists of many thin threads, between which there is quite a lot of air, i.e. there are rays, and thus also UV rays.