radiation of a candle camera in front of him, looks in the direction indi- ure the luminous power of a lamp in terms of stan- distant 1 meter (39 inches) from the blackened silver cated by the upper arrow, at the ground glass through dard candles or other arbitrary units. Numerous at- plates, the… … that of the Auer burner is 0.401. He intends to extend point. The width of the slot may be regulated. The his researches to arc and mercury vapor lamps. shutter is wound upon an upper roller (r) until the Fery photometer, with copper cylinder removed, slot is upon the roller. The exposure is made…
Apparatus · Camera · Surface · Motor · Water · Ground glass · Scientific American · Small country · Peerless rubber · Wet grain · Water power · American supplement · Small house · Pinar del · Water glass
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