...the same way as when a single colour is employed. In order that two portions of light may interfere, it is necessary that they be derived from the same...in directions not much deviating from each other. The deviation may be produced, in one or both portions, by inflection, by reflection, by refraction,...

...dieselbe geführt worden ist.-) Von einem leuchtenden Punkt M Young, Lect. N. Ph. Vol. I, pag. 464. In order that the effects of two portions of light may be thus combined it is necessary that they Ix derivcd trom the same origin. and that they arrive at the same point by iliffcmit paths. in directions...

...order that the effects of two portions of light may he thus comhined, it is necessary that they he derived from the same origin, and that they arrive at the same point hy different paths, in directions not much deviating from each other." This deviation may he produced...

...differences, his notion of difference relies on sameness as a primary category as well as the fixity of place: "In order that the effects of two portions of light...different paths, in directions not much deviating jrom each other" (quoted in Kipnis 1991, 88; italics mine). Presumably a "mutated modest witnesses"...

...differences, his notion of difference relies on sameness as a primary category as well as the fixity of place: "In order that the effects of two portions of light...same point by different paths, in directions not much demoting jrotn each other" (quoted in Kipnis 1991, 88; italics mine). Presumably a "mutated modest...

...dark and bright interference bands may be seen. Here is Young's account of this crucial experiment:3 In order that the effects of two portions of light...it is necessary that they be derived from the same 1 JG Lockhart, Life of Sir Walter Scott (London, 1896), p. 119. * Works, vol. I, p. 192. origin, and...