epi-illuminationn.
/ˌɛpɪɪˌl(j)uːmɪˈneɪʃən/ Microscopy.
Illumination of the object field of an optical microscope from the side of the field on which the object is viewed.
ΘΚΠ
the world > matter > light > illumination > [noun] > in a microscope
epi-illumination1967
1967 S. Bradbury Evol. of Microscope ii. 46 It is often more convenient to work at night, so Hooke devised the oil lamp and epi-illumination equipment shown attached to his microscope.
1975 Nature 3 Apr. 457/2 A CS100 W/2 lamp was used for epi-illumination through a 40/1.0 objective.
1985 Brit. Med. Jrnl. 14 Sept. 696/1 The..slides were..examined by fluorescent microscopy under epi-illumination.
Derivatives
ˌepi-iˈlluminator n. a light source providing epi-illumination.
ΘΚΠ
the world > matter > light > illumination > [noun] > in a microscope > light source providing
epi-illuminator1971
1958 G. H. Needham Pract. Use Microscope xxi. 343/2 Epilum Opaque Illuminator made by C. Reichart, Vienna.]
1971 Nature 4 June 327/1 The slides were examined under a Leitz ortholux microscope fitted with an HBO 200 mercury vapour light source and a ‘Ploem’ epi-illuminator.
1977 Nature 23 June 740/2 The POH-3 polarising microscope has..interchangeable eyepiece tubes, graduated, circular rotatable stage and epi-illuminator.
This entry has not yet been fully updated (first published 1993; most recently modified version published online March 2018).
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n.1967