why does a reflector give better image of a small portion of the celestial body?
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The rays emerging from distant celestial bodies travel through space and earth's atmosphere. Earth's atmosphere has varying density.
Space is a rarer medium and the earth's atmosphere is denser. As the ray enters a denser medium it gets deflected. Each ray is subjected to this effect. What we receive is a bundle of parallel rays. Each ray enters the earth's atmosphere at different locations that are close by. So each ray gets deflected along a different path. S scattering effect takes place. When we observe with our eyes small number of rays enter our eyes. The image generated is of low pixel value. The reflector is in a position to gather more rays and present if to us. As we narrow the area of observation the gather increases. So we get to see a better image.
Space is a rarer medium and the earth's atmosphere is denser. As the ray enters a denser medium it gets deflected. Each ray is subjected to this effect. What we receive is a bundle of parallel rays. Each ray enters the earth's atmosphere at different locations that are close by. So each ray gets deflected along a different path. S scattering effect takes place. When we observe with our eyes small number of rays enter our eyes. The image generated is of low pixel value. The reflector is in a position to gather more rays and present if to us. As we narrow the area of observation the gather increases. So we get to see a better image.
abnish97:
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