John Dalton's lectures and lecture illustrations.

  • Gee, W. W. Haldane.
Date:
[1915]
Catalogue details

Licence: In copyright

Credit: John Dalton's lectures and lecture illustrations. Source: Wellcome Collection.

    72/88 page 64
    (£) Represents the closely packed atoms of a liquid or solid, without atmospheres of heat. Sheet 45- “ Atoms’5 of steam repellent by virtue of their atmos¬ pheres of heat, above the close-packed atoms of water without heat. Sheet 46. Plate VIII. “ Heat in an atmosphere and in a vacuum.” A reference to “ heat in a vacuum 55 is found in Dalton’s ‘New System,” I., i., 73 (1808) : . . . interstitial heat amongst the small globular molecules of air, . . . [which] scarcely can be said to belong to them, because it is equally found in a vacuum or space devoid of air, as is proved by the increase of temperature upon admitting air into a vacuum.” Sheet 47. Six atoms, four of one size, two of another, with their atmospheres of heat. These are figured similarly in “ New System,” I., ii., Plate 7. Sheet 48. In three equal areas are disposed atoms of hydrogen, nitrous oxide and carbonic acid. A similar diagram is in “ New System,” 1., ii., Plate 7, but whereas in the book equal numbers of atoms of all three gases are present, in the sheet the numbers are in the ratio 9:7:7. Sheet 49. Entitled “ Compound Atmosphere.” There is a uni¬ form distribution of “ atoms ” of nitrogen, oxygen, water
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