The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 479
CURVf.5 SHOWING PROPORTIOWATt T?ADIATIOM Or VARI-OUS WAVE. LEMaTH5 AT INDICATED TEMPtRATURt5 OF INCANDtSCtNT 50LID3. Cbas.TPk.Hips, Consul*Irr^ Zr7qir7ee … DISTRIDUTIOM CURVL5 Of TUMG5TLM LAMP. The Architect and Engineer 103 In making candle-power tests, an instrument known as a photometer is-used, and the sources of light are usually compared with an incandescentlamp which has been seasoned and standardized by laboratories making a-specialty of…
Architecture · Building
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