
1) Anglo-Irish family 2) English surname 3) John tyndall 4) Physicist
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https://www.crosswordclues.com/clue/tyndall
[lunar crater] Tyndall is a relatively small lunar impact crater on the far side of the Moon, behind the southeastern limb. It is located very near the western outer rim of the larger crater Pizzetti, and the two are separated only by a few kilometers. To the southwest of Tyndall is the crater Bjerknes, and to the south lies Clark. This is ...
Found on
http://en.wikipedia.org/wiki/Tyndall_(lunar_crater)

John, English physicist, 1820-1893. ... See: Tyndall effect, tyndallization, Tyndall phenomenon. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973

Type: Term Pronunciation: tin′dĕl Definitions: 1. John, English physicist, 1820-1893. See: Tyndall effect, tyndallization, Tyndall phenomenon
Found on
http://www.medilexicon.com/medicaldictionary.php?t=95264

1820–93, English physicist.
Found on
https://www.infoplease.com/dictionary/tyndall
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