Further, while it is convenient to use a photocell to measure radiation intensity or flux, the photocell must be retained physically away from the fluid which is being sterilized by exposure to the ultra-violet radiation, otherwise the photocell is destroyed.
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www.freepatentsonline.com/3858048.html
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The lens assembly prevents tampering with the photocell by vandals and filters ultra-violet rays from reaching and damaging the photocell. ...
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www.freepatentsonline.com/3815968.html
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visible and ultra-violet regions. Two integral multiplier photocell units are mounted in a modified spectrograph plate-holder, and provide outputs ...
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www.iop.org/EJ/article/0950-7671/28/5/303/siv28i5p138.p...
www.iop.org/EJ/article/0950-7671/28/5/303/siv28i5p138.pdf
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yellow light was transmitted by the ultra-violet filters, which could be ... results were obtained on measurement with a caesium photocell of the ...
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www.jstor.org/stable/96505
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'Violet' pAlGaAs-pGaAs--nGaAs photocells with hyperthin (30-300 A) wideband layers. Authors: Alfernov, Zh. I.; Andreev, V. M.; Vodnev, A. A.; Larionov, ...
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adsabs.harvard.edu/abs/1988PZhTF..14...76A
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in th, construction of ultra-violet photocells. Its efficiency between 2800/~.. and 2400/~. is exceptionally high, and it wot~ld be of practical use as fat" ...
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www.informaworld.com/index/910227350.pdf
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In other words, each photocell interprets the tiny bit of light it receives. Let's say the light is reflected from an African violet leaf. A photocell receives light and must determine what color and value it will record, and it can only record one.
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www.africanvioletfun.com/photography/two.html
www.africanvioletfun.com/photography/two.html
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State of the Art Photocell; ... The standardization of control wire colors, typically violet and gray, is an example of conformance to this standard. A second type of ballast also utilizes additional control wires but in a proprietary method. Examples of this are Lutron’s HiLume that requires one control wire.
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www.archenergy.com/lrp/demandresp_lighting/deliverable_...
www.archenergy.com/lrp/demandresp_lighting/deliverable_3.3.1b_final_State%20of%20the%20Art%20Photocell%20Report.pdf
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Referring to figures 4a and 6, the length measuring means 7 as illustrated includes a photocell, laser, or ultra violet beam which is to be obstructed by each moving oyster. The length measuring means 7 as shown in figure 6 is located just clear of the end of the second portion 34 of the orienting and spacing conveyor 5.
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www.wipo.int/pctdb/en/wo.jsp?IA=WO2001076774&wo=2001076...
www.wipo.int/pctdb/en/wo.jsp?IA=WO2001076774&wo=2001076774&DISPLAY=DESC
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