The process patented by Dewar and Redwood in 1889 consists in the use of a suitable still and condenser in free communication with each other - i.e.
In 1866 Sir James Dewar proposed an unsymmetrical form (II); while in 1867, A.
CH CH HC, N CH HC CH HC HC HC Hcch Hc Ch Ch Kekule t i Dewar Ladenburg One of the earliest and strongest objections urged against Kekule's formula was that it demanded two isomeric ortho-di-substitution derivatives; for if we number the carbon atoms in cyclical order from i to 6, then the derivatives 1.2 and 1.6 should be different.'
He admitted the possibility of the formulae of Kekule, Claus, Dewar and Ladenburg, although as to the last di-trimethylene derivatives should be possible reduction products, being formed by severing two of the prism edges; and he attempted to solve the problem by a systematic investigation of the reduced phthalic acids.
The relative merits of the formulae of Kekule, Claus and Dewar were next investigated by means of the reduction products of benzene, it being Baeyer's intention to detect whether double linkages were or were not present in the benzene complex.
Ino, who hated the children of Nephele, persuaded Athamas, 1 Sir James Dewar, Compt.
Dewar (Proc. Roy.
It may be remarked that, whereas Fleming and Dewar employed the ballistic method, their specimens having the form of rings, Honda and Shimizu worked magnetometrically with metals shaped as ovoids.
Fleming and Dewar (loc. cit.
Henderson and of Dewar and Fleming.
Dewar and Fleming (Proc. Roy.
Dewar 63, 311.
Fleming and Dewar determined the susceptibility of liquid oxygen (Proc. Roy.
Fleming and Dewar give for the susceptibility the values-13.7 X 6 at 15° C. and - 15.9X 10 -6 at - 182°, the latter being approximately equivalent to KX Io 6 = - 1.62.
Putting t°= - 182 in the equation given above for Curie's results, we get K X Io 6 = - 1.66, a value sufficiently near that obtained by Fleming and Dewar to suggest the probability that the diamagnetic susceptibility varies inversely as the temperature between-182° and the melting-point.
Fleming and James Dewar on dielectric constants at low temperatures: " On the Dielectric Constant of Liquid Oxygen and Liquid Air," Proc. Roy.
Another relic was the saint's staff or crozier, which became known as the coygerach or quigrich, and was long in the possession of a family of the name of Jore or Dewar, who were its hereditary guardians.
Tait and Dewar, as a consequence of the kinetic theory of the constitution of gaseous media.
SIR JAMES DEWAR (1842-), British chemist and physicist, was born at Kincardine-on-Forth, Scotland, on the 20th of September 1842.
Dewar, The Gardeners' Dictionary; J.
Dewar and A.
Dewar, Proc. Roy.
A number of similar deviations at temperatures below o° C. were found by the writer in reducing the curves representing the observations of Dewar and Fleming (Phil.
It would appear, for instance, according to the observations of Dewar and Fleming, that the value of s for iron is positive below - 150° C., at which point it vanishes.
Dewar and Fleming, working at very low temperatures, were compelled to use the platinum thermometer, and expressed their results in terms of the platinum scale.
Noll's values apply to the temperature of +Ioo° C., Dewar and Fleming's to that of -Ioo° C., approximately.
Dewar and H.
Dewar and Jones (Journ.
Dewar and Jones suggest that in the latter reaction it is the metallic nickel which is probably the reducing agent effecting the change, since it is only dissolved in any quantity when the anthracene hydrocarbon is produced.