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- n. Plural form of photocathode.
Sorry, no etymologies found.
Technological improvements included vacuum-tight fused fiber optics for good center resolution and improved gain, multi-alkali photocathodes and fiber optic input and output windows.
Highly efficient photocathodes for dye-sensitized tandem solar cells
PMT photocathodes are not uniformly sensitive and typically the photons are spread over the entire entrance window rather than concentrating into one region.