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Ogden Rood
5 quotes
“In all his experiments with the , found that the discharge proceeded simultaneously at each , positive electricity starting from the positive and traveling toward the negative electrode, while at the same exact instant of time negative electricity started for the positive electrode. This is also known to hold good with , and there seems to be no reason why it should not also true with the , so as to render applicable to the induction spark the results obtained with the Leyden jar or electric machine.”
Ogden Rood (1831–1902) said by 1902 at the latest wikiquote, CC BY-SA 4.0 source
“After the completion of my first set of experiments on the duration of the discharge of a , I became anxious to make some measurements of the duration of a flash of ordinary lightning, which may be considered equivalent to the discharge of an immense jar with an enormous striking-distance.”
Ogden Rood (1831–1902) said by 1902 at the latest wikiquote, CC BY-SA 4.0 source
“The advance from drawing to painting should be gradual, and no serious attempts in colour should be made until the student has obtained proficiency in outline and in light and shade. If the artist cannot draws objects in a rather masterly way there is no point in his attempting colour.”
Ogden Rood (1831–1902) first seen 1881 wikiquote, CC BY-SA 4.0 source
Recorded in: Students' Text-book of Color; Or, Modern Chromatics, with Applications to Art and Industry. New York: D. Appleton and Company. 1881.
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Ogden Rood (1831–1902) said by 1902 at the latest wikiquote, CC BY-SA 4.0 source
“... the sensation of sight is produced by the action of very minute waves on the nervous substance of the ; that is to say, by the aid of purely mechanical movements of a definite character. When those waves have a length of about 1/39000 of an inch, they produce the sensation which we call red—we see red light; if they are shortened to 1/41000 of an inch, their action on us changes, they call up in us a different sensation—we say the light is coloured orange; and as the lengths of the waves are continually shortened, the sensation passes into yellow, green, blue, and violet. From this it is evident that colour is something which has no existence outside and apart from ourselves; outside of ourselves there are merely mechanical movements, and we can easily imagine beings so constructed that the waves of light would never produce in them the sensation of colour at all,but that of heat.”
Ogden Rood (1831–1902) first seen 1879 wikiquote, CC BY-SA 4.0 source
Recorded in: (372 pages; originally published in 1879 with the title Modern Chromatics with Applications to Art and Industry)