Phot


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phot

[fōt]
(optics)
A unit of illumination equal to the illumination of a surface, 1 square centimeter in area, on which there is a luminous flux of 1 lumen, or the illumination on a surface all points of which are at a distance of 1 centimeter from a uniform point source of 1 candela. Also known as centimeter-candle (deprecated usage).

Phot

 

an archaic unit of illumination equal to the illumination of a surface, 1 cm2 in area, over which a luminous flux of 1 lumen is uniformly distributed. Symbol, ph. In conjunction with the phot, the unit called the radphot (symbol, rph) was used to measure the luminous exitance of a luminous surface. After the introduction of All-Union State Standard (GOST) 7932–56, “Photometric Units”, the SI unit called the lux (symbol, lx) was adopted as the unit of illumination, and the lumen per square meter (symbol, lm/m2) was adopted as the unit of luminous exitance. Equivalents: 1 ph = 104 lx; 1 rph = 104 lm/m2.

phot

A unit of illumination equal to 1 lumen per square centimeter. Abbr. ph.
References in periodicals archive ?
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Eduardo AAaAaAeA~o (ING RODRIGUEZ/ Presidential Phot / MANILA BULLETI
(PHOT) has finalised the acquisition of a majority of assets (51%) from a tile flooring business with proprietary property that is aligned with GrowLife's core business competencies, the company said.
While most of the cast of "Little Women: LA" went to Alaska for a vacation, JolAaAaAeA@ was missing from the phot
Mr Sheen can expect to be despised and scoffed at but with his passion and talent, I firmly believe that, in the wake of the forthcoming travesty of an election there will come a revival in Wales and my grandchildren will have a purpose and a challenge in their lives POB hwyl a phot bendith.
Camp Bastion in Afghanistan PICTURE: Corporal Si Longwor th RLC (Phot)
Ali said: "Most of my work is a form of painting by other means, using fragments of phot ography.
CALL OF DUTY: Marine Martin McCaffrey helps a wounded child and above, Will Charters helps another Pictures: LA(PHOT) AJ MACLEOD/MOD
FIRST: Yesterday's Mirror' HOT SEAT: Brenda Burke, Magda Okadiec and Joanne Curtis and, right, Eurospar in Naas Pictures: MARTIN ROWE/ADRIAN MELIA PHOT' WOOD YOU BELIEVE IT: Dreaded chair in work canteen
pHOT on the heels of Milk Chocolate and Crunchie Mini Dipping Donuts,Cadbury have launched a new Caramel variety.
In the phot the couple can be seen lounging on their bed as they smile for the camera.
Right, an MOD helicopter stands watch as a boarding party approaches the yacht LA(Phot) Stephen Johncock/MOD Cr