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In its simplest mechanical form, a stroboscope can be a rotating cylinder (or bowl with a raised edge) with evenly spaced holes or slots placed in the line of sight between the observer and the moving object. The observer looks through the holes/slots on the near and far side at the same time, with the slots/holes moving in opposite directions.
A strobe light or stroboscopic lamp, commonly called a strobe, is a device used to produce regular flashes of light. It is one of a number of devices that can be used as a stroboscope . The word originated from the Ancient Greek στρόβος ( stróbos ), meaning "act of whirling".
The original private investors from 1978 through 1990, followed from 1997 through 2005 by Consolidated Vision Group (aka Chrysallis Management), National Vision, Inc & Berkshire Partners America's Best Contacts & Eyeglasses is a discount provider of eye examinations , eyeglasses and contact lenses , with over 1000 retail locations in the United ...
Original Medicare (Part A and Part B) does not cover routine vision care, including eyeglasses, except in certain situations. Therefore, a person must pay 100% of the costs.
The contrast threshold function shows that at modulation frequencies near 100 Hz, stroboscopic effect will be visible at relatively low magnitudes of modulation. Although stroboscopic effect in theory is also visible in the frequency range below 100 Hz, in practice visibility of flicker will dominate over stroboscopic effect in the frequency ...