| 释义 |
phototube|ˈfəʊtəʊtjuːb|
[f. photo- 1 + tube n.]
A photocell in the form of a vacuum tube or gas-filled tube with a photoemissive cathode and an anode.
1930Electronics I. 418/1 (heading) Phototube voltage supervisor. An aid to tube production. 1953[see mark n.1 13 e]. 1964Oceanogr. & Marine Biol. II. 358 It is only since the adoption by biologists of the multiplier phototube..that more precise measurements of the spectral composition of luminescence,..and rates of flashing, have become feasible. 1973Nature 12 Jan. 132/2 The emission was observed at right angles..and detected photoelectrically with a ‘1P28’ phototube. |