例文・使い方で印象づける「optical」の覚え方
スポンサーリンク...By some optical illusion, it seemed to fall away oneither hand to the depth of three or four feet... 
Richard Harding Davis 「The Congo and Coasts of Africa」
...Its pointed fore part, which we hesitate to call a head, bears absolutely no trace of any optical apparatus; and the same with every other part of the body...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...To the angry man,staring back and upward, there came apeculiar optical illusion...
Various 「Astounding Stories of Super-Science, December 1930」
...This is a perennial andvery curious optical illusion...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...” The optical doublestars are cases where the two components are far distant from each other,and hence can be distinguished in our telescopes as separate points oflight...
E. Walter Maunder 「Are the Planets Inhabited?」
...The only other optical treatise written by Kepler, was his Dioptrics,with an appendix on the use of optics in philosophy...
David Brewster 「The Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler」
..." An examination of her surface with very moderate optical aid is,however, quite a revelation, and the view we then get is not easilycomparable to what we see with the unaided eye...
Cecil G. Dolmage 「Astronomy of To-day」
...But his health was broken by early trials, and hedied at the age of thirty-nine, while planning new and still moreimportant optical achievements...
Oliver Lodge 「Pioneers of Science」
...This great man was likewise engaged inimproving his theory and in considering how best the optical searchcould be conducted...
Oliver Lodge 「Pioneers of Science」
...Place this reflector in the prolongation of the optical axis, set thecandle so that the light from the reflector shall be shown through theglass, and look through the opening...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...The maps show all of thestars visible to the naked eye in the regions of sky represented,and, in addition, some stars that can only be seenwith optical aid...
Garrett Serviss 「Pleasures of the telescope」
...Indeed, some glasses decidedlyexaggerate the blueness of Vega, but the effect is sobeautiful that one can easily forgive the optical imperfectionwhich produces it...
Garrett Serviss 「Pleasures of the telescope」
...By these attributes the optical and electricalproperties of the radiation are to be explained...
Carl Vilhelm Ludvig Charlier 「Lectures on Stellar Statistics」
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