Parabolic dish reflectors are used to collect energy from a distant source .
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Parabolic dish reflectors are used to collect energy from a distant source .
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Volume of the Parabolic dish is given by where the symbols are defined as above.
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Similarly, energy radiating from the focus to the Parabolic dish can be transmitted outward in a beam that is parallel to the axis of the Parabolic dish.
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Precision to which a parabolic dish must be made in order to focus energy well depends on the wavelength of the energy.
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The Parabolic dish is rotated around axes that pass through the focus and around which it is balanced.
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Focus-balanced configuration requires the depth of the reflector Parabolic dish to be greater than its focal length, so the focus is within the Parabolic dish.
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The effect is, that the arm to hold the Parabolic dish can be shorter and snow tends less to accumulate in the Parabolic dish.
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Parabolic dish mirrors were studied by the physicist Ibn Sahl in the 10th century.
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Parabolic dish mirrors are one of many shapes for a burning glass.
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Parabolic dish reflectors are popular for use in creating optical illusions.
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Parabolic dish reflector pointing upward can be formed by rotating a reflective liquid, like mercury, around a vertical axis.
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Parabolic dish reflectors are a popular alternative for increasing wireless signal strength.
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