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Lee Optical Company. Williamson v. Lee Optical Co., 348 U.S. 483 (1955), was a case in which the Supreme Court of the United States held that state laws regulating business are subject to only rational basis review and that the Court need not contemplate all possible reasons for legislation .
An optical phased array (OPA) is the optical analog of a radio-wave phased array. By dynamically controlling the optical properties of a surface on a microscopic scale, it is possible to steer the direction of light beams (in an OPA transmitter [2] ), or the view direction of sensors (in an OPA receiver [3] ), without any moving parts.
Defunct. A coupon-eligible converter box ( CECB) was a digital television adapter that met eligibility specifications for subsidy "coupons" from the United States government. The subsidy program was enacted to provide terrestrial television viewers with an affordable way to continue receiving free digital terrestrial television services after ...
Optical wireless. Optical wireless is the combined use of "optical" ( optical fibre) and "wireless" ( radio frequency) communication to provide telecommunication to clusters of end points which are geographically distant. The high capacity optical fibre is used to span the longest distances. A lower cost wireless link carries the signal for the ...
Optical depth is a measure of the extinction coefficient or absorptivity up to a specific 'depth' of a star's makeup. [1] The assumption here is that either the extinction coefficient or the column number density is known. These can generally be calculated from other equations if a fair amount of information is known about the chemical makeup ...
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