The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 180
Thismakes a ring of light.1 round the plant. Xo■ ine can pass through itwithout being seen. RyIilacing tliesc projectorsso that all of the beamsof light arc pointed inone- direction. therewill be no annoying.ylare in the eyes of thepatrols when they walkin the same directiontlie beams arc… … >i> i.icii11 \(, \ III \(; i/,()ir iIr- iRaiiis nf li.yht iliu-ctcd sn as t<i -triUcllif i^i-diind ahciut 20;) tuct away. Another effective way of ap|)lyinj; theseprojectors is to mount the wide angle typeon top of tlic huildings so that they throwtheir cone of hght away from the…
Architecture · Building
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