The main general purpose of a reflector is to_________?
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I would also pick A as the correct answer.\n\nB. the camera might or might not have to be adjusted depending on how much light is being reflected into the picture.\n\nC. A reflector may or may not prevent one side othe image from appearing lighter or darker depending on the actual lighting of the scene.\n\nD. because B & C are not right
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Ive been looking into lasik lately and I believe it's primary purpose is for nearsighted (or folks you can't see very far) vision. \nDon't quote me. You can use that link to learn more.
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a double convex lens will magnify, i can't remember which ones reduce size, but i'm guessing some sort of concave lens, and lenses REFRACT light, while mirrors REFLECT light.
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mass, length, time, current, luminous intensity and solid angle steradians r fundamental. Rest all can b expressed by these alone.\n\nDarren G - missed d last 1.\n\nSo ur ans is option D
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Yes, the whole point of the tinsel is to reflect the lights!
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must be some kind of a transducer. it could also be a laser as i am not sure whether it is sound or light waves. i think it will use a laser and a sensor to detect the reflaction and hence how near it is to an object.
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Your telescope is a reflector. Light enters the tube, and strikes the primary mirror in the back, which is parabolic like a satellite dish. The mirror directs all the light it could gather to the secondary mirror upfront. If you could see the light being directed to the secondary mirror, it would appear as a cone with the tip chopped off due to it striking the secondary mirror.\n\nThe primary mirror, being parabolic, flips the image when viewed from past a certain distance away, because of the way it directs the light. If you ever come across those magnifying beauty mirrors, it's the same deal. You'll find that at a certain distance, the reflection of your finger appears on the opposite side that your finger is actually on. You can even find a point where your finger and it's reflection is pointing right at eachother and you can't tell the difference between which is the real object and which is the reflected image!\n\nAnyway some people are bothered by the fact that the image is "upside down" in reflectors and there is a way to correct for it, as other people have mentioned. But keep in mind that in space, there is no up or down, so there's no such thing as upside down. You really get used to it quickly when aiming the telescope on things and recentering objects.
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The incident ray is perpendicular to the surface of reflection.\nThen one has the least distance case.
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What would be the purpose in doing so?
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A question I have wondered myself.\n\nThe best I can manage is this...\n\nI know that it is a thought experiment but it is actually impossible for the waves to be perfectly recombined as you suggest.\n\nFor example, if one of them passes through a partially reflective surface with the other undergoing its phase shift and then being sent back to reflect from the surface into the path then some of this energy will be transmitted through the partial reflector while some of the original ray will reflect off it.  These will then interfere constructively (there will be an additional phase shift).\n\nI think that there will always be this kind of loop-hole, no matter how you do it.\n\nIf you only do it approximately, so that the waves are very close to converging (with a phase shift) then you get an interference pattern that is pretty much zero along the central path (ie the first order solution is destructive to zero as expected) but with constructive interference elsewhere so that energy is conserved overall.\n\nI hope this is clear!
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Its made that way as an anti-glare feature.\n\nThere's a full mirror behind a partial mirror.  The two mirrors are a few degrees apart either can be used.  The dimmer one is for night driving to cut glare from headlights.
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mirror is designed to reflect the light and no refraction light .. from it .. so the reflection angel will be zero
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The major applications of solar thermal energy at present are heating swimming pools, heating water for domestic use, and space heating of buildings. For these purposes, the general practice is to use flat-plate solar energy or evacuated tube collectors with a fixed orientation (position).\n\nThe highest efficiency with a fixed flat-plate collector or evacuated tube collector is obtained if it faces toward the equator and slopes at an angle to the horizon equal to the latitude plus about 10 degrees. Solar collectors fall into two general categories: nonconcentrating and concentrating.\n\nIn the nonconcentrating type, the collector area (i.e. the area that intercepts the solar radiation) is the same as the absorber area (i.e., the area absorbing the radiation).
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Reflection is the change in direction of a wave front at an interface between two dissimilar media so that the wave front returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves.\n\nSpecular reflection\nA mirror provides the most common model for specular light reflection and consists of a glass sheet in front of a metallic coating where the reflection actually occurs. It is also possible for reflection to occur from the surface of transparent media, such as water or glass.\n\nDiffuse reflection\nWhen light strikes a rough or granular surface, it bounces off in all directions due to the microscopic irregularities of the interface. Thus, an image is not formed. This is called diffuse reflection\n\nRetroreflector\nSome surfaces exhibit retroreflection. The structure of these surfaces is such that light is returned in the direction from which it came. A simple retroreflector can be made by placing three ordinary mirrors mutually perpendicular to one another (a corner reflector). The image produced is the inverse of one produced by a single mirror.\n\nComplex conjugate reflection\nLight bounces exactly back in the direction from which it came due to a nonlinear optical process. In this type of reflection, not only the direction of the light is reversed, but the actual wavefronts are reversed as well. A conjugate reflector can be used to remove aberrations from a beam by reflecting it and then passing the reflection through the aberrating optics a second time.\n\n\nNeutron reflection\nMaterials that reflect neutrons, for example beryllium, are used in nuclear reactors and nuclear weapons.\n\n\nSound reflection\nWhen a longitudinal sound wave strikes a flat surface, sound is reflected in a coherent manner provided that the dimension of the reflective surface is large compared to the wavelength of the sound. In the theory of exterior noise mitigation, this phenomenon mildly detracts from the concept of a noise barrier by reflecting some of the sound into the opposite direction.
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To seek others' opinions, viewpoints, etc...\n\n:)
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That's the Arecibo radio telescope in Puerto Rico.  It isn't aimed - it can only observe objects that pass overhead.  It has a small area overhead it can see, and as the Earth turns, we see different things with it.
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it works by principle of multiple reflection. This is achieved by keeping mirros in an angle that the light from the base plate gets reflected by many mirrors before travelling your eyes via the cylinder. This is almost the extension of concept where people keep huge mirrors in shop to provide an illusion that it is a big shop.