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If you compare the Earth-Sun distance in the summer and in the winter, you will notice that it differs by only about 4%. Given that the radiation strength of the Sun is proportional to 1/distance^2, the radiation intensity is roughly 8% STRONGER in the WINTER (on the northern hemisphere) than in the summer. But the distance to the Sun is not the only ...


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It is a very general doubt and really important. Slanting sun rays coming to earth from sun are refracted and rarely reach earth. They deviate by refraction. At equator and tropics refraction is less. As you know for $\theta = 0$ no refraction take place and as angle increase refraction increase. As poles do not get much sun rays throughout year and ...


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Think of it like this: Assume that you want to make pasta. For a piece of pasta to be "cooked" a certain amount of energy has to be given to it (depends on the type of pasta) (also as anna v mentioned It is the energy that changes the molecular bonds that results in cooking and the higher the temperature the faster). The way to transfer this energy to it is ...


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First consider a pot with a loose lid over it. As the temperature rises, the vapor pressure of the steam rises as well (even before boiling) and the steam will push its way out under the lid. You'll get cooking temperatures over 100C, but not by much, and a lot of the energy you expend on cooking just goes out into the air instead of into your food. And to ...


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Also, though this might not be an actual use for this, you could make steak very rare with it. In the case of a very rare steak, you need it to be cooked just enough to make it safe, kill bacteria, and make it easier to digest, but no more than that. If you put it high pressure, you could heat it up to a high temperature without cooking it. That way, you ...


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Plasma is essentially ANY ionized gas that has been electrified with extra electrons in both negative and positive states. If you were able to create an Oxygen plasma with polyatomic ions, it would still be a plasma. I would try to mix a second gas with Oxygen if I was attempting to do this. Here is my source: Plasma Treatment Basics


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There are several different things that need to be explained / explored here. First - the speed of light in vacuum is independent of frequency / wavelength. The same is not necessarily true for light in any medium other than vacuum: this is why we can see rainbows! Second - not all objects emit "white" light. The emission spectrum of a star depends, among ...


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No color light travels farther or faster than any other light in a vacuum, the television room, water or anywhere else except very special or very large environments. Like you suggest, if the intergalactic space between supernovae absorbs red light differently than blue light, or vice versa, that will affect which we detect here on earth (hopefully an ...



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