| analyser | <microscopy> An optical device, capable of producing plane polarized light, used for detecting the state of polarization. A second polarizing element inserted beyond a preparation. When its vibration direction is at right angles to the vibration direction of the polarize, the field becomes black if no anisotropic specimen is on the stage or when viewing an anisotropic substance in an extinction position or directly down an optic axis of an anisotropic crystal. (05 Aug 1998) |
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| electrostatic analyser | <radiobiology> A device which filters an electron beam (band-pass), permitting only electrons within a narrow energy (velocity) range to pass. (09 Oct 1997) |
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