| polarized helium imaging |
A means of assessing asthma in which a magnetic resonance image is made of the lungs after a patient inhales polarized helium gas. Asthmatics have ventilation defects in the lungs that are not present in nonasthmatics.
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| polarizer |
A lens filter which polarizes the light coming into the lens. Can be used to increase saturation and to eliminate reflections in glass or water.
출처: www.dvspot.com/features/glossary.shtml
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| polarizer |
A light filter which only allows light waves of a certain rotation through. Polarized material with perpendicular filtering is used in LCDs to enclose the liquid crystal. The liquid crystal is then used as the medium which twists the light waves 90?in order to allow the light to pass through or not.
출처: www.multiplemonitors.org/Pages%20-%20about%20MMI/M...
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| polarized light |
Light waves vibrating in one plane only as opposed to the multi-directional vibrations of normal rays. Natural effect produced by some reflecting surfaces, such as glass, water, polished wood, etc., but can also be simulated by placing a special screen in front of the light source. The transmission of polarized light is restrained by using a screen at an angle to the plane of polarization. Positive
출처: www.mir.com.my/rb/photography/glossary/terms_o_p.h...
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| polarizer |
A stretched polymer which transmits light in only one axis. A typical display has polarizers on the front and back.
출처: www.pacificdisplay.com/lcd_glossary.htm
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