出典:Wiktionary
出典:『Wiktionary』 (2026/03/27 03:20 UTC 版)
From 1939 from Ancient Greek δύναμις (dúnamis, “power, might, strength”) + -ode. By surface analysis, dyne + -ode.
出典:Wikipedia
出典:『Wikipedia』 (2011/07/16 02:23 UTC 版)
A dynode is one of a series of electrodes within a photomultiplier tube. Each dynode is at a more positive electrical potential than its predecessor. Secondary emission occurs at the surface of each dynode. Such an arrangement is able to amplify the tiny current emitted by the photocathode, typically by a factor of one million.