Record

Reference numberAP/40/13
LevelItem
TitleUnpublished paper, 'On the daily fall of the barometer at Toronto' by Thomas Hopkins
CreatorHopkins; Thomas (fl 1857)
Date1857
DescriptionHopkins shares tables of the movements of meteorological instruments registered at Toronto in 1846, in the months of January and July, as specimens of the changes which take place in the atmosphere in winter and summer. The principal object of the research was to find the cause of the fall of the barometer in the middle of the day. Hopkins endeavours to show that the vapour, which in the early part of the day was produced by solar heat at the surface, by its expansive power, bore that heat to the upper regions of the air, where it was condensed by the cold of the gases in that situation, when the heat of elasticity was set at liberty to warm and expand the gases, and that it was this expansion which reduced atmospheric pressure in the locality and caused a fall of the barometer.

Subject: Meteorology

Received 19 December 1857. Communicated by William Fairbairn.

Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 9 of the Proceedings of the Royal Society as 'On the daily fall of the barometer at Toronto'.
Extent17p
FormatManuscript
Physical descriptionInk on paper
Digital imagesView item on Science in the Making
Access statusOpen
Related materialDOI: 10.1098/rspl.1857.0026
Fellows associated with this archive
CodeNameDates
NA6039Fairbairn; Sir; William (1789 - 1874)1789 - 1874
Add to My Items

    Collection highlights

    Browse the records of some of our collections, which cover all branches of science and date from the 12th century onwards. These include the published works of Fellows of the Royal Society, personal papers of eminent scientists, letters and manuscripts sent to the Society or presented at meetings, and administrative records documenting the Society's activities since our foundation in 1660.

    The Royal Society

    The Royal Society is a Fellowship of many of
    the world's most eminent scientists and is the
    oldest scientific academy in continuous existence.
    Registered charity number 207043

    Website design ©CalmView



    CONTACT US

    + 44 207 451 2500
    (Lines open Mon-Fri, 9:00-17:00. Excludes bank holidays)

    6-9 Carlton House Terrace, London SW1Y 5AG

    Email Us →

    SUBSCRIBE

    Subscribe to our newsletters to be updated with the
    latest news on innovation, events, articles and reports.

    Subscribe →

    © CalmView