scholarly journals 1. Sequel to a paper on the reduction of the thermometrical observations made at the apartments of the Royal Society, with an appendix

1851 ◽  
Vol 5 ◽  
pp. 925-927
Keyword(s):  
Royal Society ◽  
Periodic Variation ◽  
Severe Weather ◽  
Royal Observatory

The principal object of this paper is the connexion of the results deduced in a former paper from the observations at the Royal So­ciety’s Apartments, with the observations at the Royal Observatory at Greenwich, in order to determine mean numerical values, and to establish the laws of periodic variation from this long series of obser­vations ; the two series of observations are here induced to one and the same series. The observations at the Royal Society having been discontinued between the years 1781 and 1786, it was necessary to supply this link in the series, more particularly as these years were distinguished by very severe weather, and their omission would have a sensible effect on the results. The deficient observations have been supplied by a comparison of the observations which were made at Somerset House, with the observations during the corresponding years made by Mr. Barker at Lyndon in Rutlandshire, from 1771 to 1799, cor­rections being thus obtained for reducing the Lyndon observations to those at Somerset House.

scholarly journals XXIX. Sequel to a paper on the reduction of the thermometrical observations made at the apartments of the Royal Society

1850 ◽  
Vol 140 ◽  
pp. 569-607 ◽  
Keyword(s):  
Royal Society ◽  
Severe Weather ◽  
Royal Observatory

In a paper which the Royal Society did me the honour to publish in the last volume of its Transactions, I gave the results found from all the thermometrical observations which have been taken at the Apartments of this Society; and I stated that I had made some progress in the connection of this series of results with those deduced from the observations at the Royal Observatory, Greenwich. Since that time I have reduced the two series of observations to one and the same series, and I have now the honour to lay the results from their combination before the Society. In my former paper I stated that no observations had been taken between the years 1781 and 1786. Had the particulars of these years been about their average values, their omission would not have materially affected the final results, but on examination I found that those years were distinguished by very severe weather, and that their omission would have a sensible effect; I have therefore supplied these par­ticulars, as detailed below.

scholarly journals XXII.—Notice of the Completion of the New Rock Thermometers at the Royal Observatory, Edinburgh, and what they are for

1880 ◽  
Vol 29 (2) ◽  
pp. 637-656
Author(s):  
Piazzi Smyth
Keyword(s):  
Royal Society ◽  
Royal Observatory ◽  
Government Contract

On the 26th of last month the full year appointed by Government Contract for the testing of the new Rock-Thermometers having expired, and they having approved themselves at all points, been accepted, and set fairly afloat on a new course of observation,—I hasten to announce the event to the Royal Society, Edinburgh, who have long had a lively interest both in these instruments and in the problems they have been employed upon.

scholarly journals XIII. Results deduced from the measures of terrestrial magnetic force in the horizontal plane, at the Royal Observatoy, Greenwich, from 1841 to 1876

1885 ◽  
Vol 176 ◽  
pp. 679-689
Keyword(s):  
Royal Society ◽  
Horizontal Plane ◽  
Magnetic Force ◽  
Proper Part ◽  
Royal Navy ◽  
Sliding Windows ◽  
Short Statement ◽  
Royal Observatory ◽  
Real Progress ◽  
Made In

In offering to the Royal Society some results deduced from the systems of magnetic observation and magnetic self-registration established several years since at the Royal Observatory, Greenwich, during a portion of the time in which I presided over that institution, I think it desirable to premise a short statement on the origin of the Magnetic Department of the Royal Observatory, and on the successive steps in its constitution. It appears to have been recognised many years ago, that magnetic determinations would form a proper part of the business of the Royal Observatory. When I commenced residence at the Royal Observatory, at the end of 1835, I found in the garden a small wooden building, evidently intended for the examination of compasses, perhaps of the size of those used in the Royal Navy. But the locality was inconvenient, and the structure was totally unfit for any delicate magnetic purpose; for instance, the balance-weights of the sliding windows were of iron. For some preliminary experiments a small observatory was borrowed from Captain Fitzroy, but no real progress was made in magnetism.

scholarly journals Total solar eclipse, 1905, August 29-30. Preliminary report of the observations made at Guelma, Algeria

1906 ◽  
Vol 77 (514) ◽  
pp. 56-76
Keyword(s):  
Solar Eclipse ◽  
Royal Society ◽  
Preliminary Report ◽  
Total Solar Eclipse ◽  
The South ◽  
Royal Astronomical Society ◽  
The North ◽  
Royal Observatory ◽  
The Government ◽  
Government Grant

The expedition to which this report refers was one of those organised by the Joint Permanent Eclipse Committee of the Royal Society and the Royal Astronomical Society; it was supported by a grant made by the Government Grant Committee. Guelma was chosen for the site of the observations, as being an inland station between Sfax, which was selected for an expedition from the Royal Observatory, Greenwich, and Philippeville, which it was at first expected Sir Norman Lockyer would occupy. Guelma is 58 kilometres from Bona, 65 kilometres from Philippeville, 55 kilometres from the nearest coast of the Mediterranean Sea; it lies at a height of about 1200 feet above sea-level on the south side of the Valley of the Seybouze, amongst hills which range in height from about 3100 feet at 13 kilometres to the north, to about 4700 feet at 11 kilometres on the south, where lies the celebrated mountain, Mahouna, “the sleeping lady,” so called from the resemblance of its silhouette to the form of a woman. (For the position of the observing hut, see p. 59.)

Centenary of the NPL

2001 ◽  
Vol 55 (1) ◽  
pp. 147-160
Author(s):  
A. Cook
Keyword(s):  
Royal Society ◽  
National Physical Laboratory ◽  
Early Years ◽  
Physical Laboratory ◽  
Royal Observatory ◽  
The Government ◽  
Government Grant

The National Physical Laboratory (NPL) attained its centenary in 2000 and that was the occasion for a meeting in The Royal Society on 7 November 2000. The centenary is part of the record of The Royal Society because Fellows of the Society actively promoted the formation of the laboratory, and the programme of the Laboratory in its early years was guided by a committee of the Society. In addition, some of the researches of the Laboratory were supported by grants from the government grant administered by the Society. The relations between the early Laboratory and the Society are not unlike those between the Society and the early Royal Observatory more than 200 years earlier. The centenary of the NPL was indeed an event of the last year of the Second Millennium, and so we include this account of the meeting of 7 November, which includes Lord Sainsbury's and the President's Addresses and abstracts of the presentations from other speakers.

scholarly journals IX. Experiments to determine the difference in the number of vibrations made by an invariable pendulum in the Royal Observatory at Greenwich, and in the house in London in which Captain Kater’s experiments were made

1829 ◽  
Vol 119 ◽  
pp. 83-102 ◽  
Keyword(s):  
Royal Society ◽  
Knife Edge ◽  
Capillary Action ◽  
Royal Observatory ◽  
The Difference ◽  
Made In

These experiments were made in compliance with a wish of the Council of the Royal Society, expressed in the following minute, dated December 13th 1827: “That Captain Sabine be requested to ascertain the difference in the number of vibrations of a pendulum between Mr. Browne’s house in London and the Royal Observatory at Greenwich.” The invariable pendulum employed to accomplish the proposed object was of the usual materials and form, new for the occasion, and numbered 12. The thermometer was the same that I had used in my former pendulum experi­ments; its graduation is described in the volume containing the account of those experiments, pages 182—187. The ball of the thermometer was sus­pended at both stations midway between the knife edge and the centre of the weight of the pendulum. The height of the barometer in the observations at Greenwich was taken by the standard barometer of the Observatory, which is in a room on the same floor as the pendulum room: in those at London it was taken by Mr. Browne’s barometer placed in the room in which the observa­tions were made. Mr. Browne’s barometer being compared with the standard of the Greenwich observatory, by means of an intermediate portable barometer, was found to require a correction of + 0.066 to make it agree with the indications of the Greenwich standard corrected for capillary action. This correction is consequently applied.

The Royal Observatory and the study of gravitation

1976 ◽  
Vol 30 (2) ◽  
pp. 133-140 ◽  
Keyword(s):  
Royal Society ◽  
Universal Time ◽  
Scientific Investigation ◽  
Important Task ◽  
Half Century ◽  
Fundamental Science ◽  
Royal Observatory

We celebrate today the tercentenary of Britain’s senior and—as some amongst us would boldly declare—most famous institution for scientific investigation. The Royal Observatory at Greenwich began life in 1675 with unequalled advantages: it shared the Royal Founder of the Royal Society; it had John Flamsteed for first ‘observator and keeper’ and he proved to be one of rhe greatest observational astronomers in history; it had Wren for architect; its first half-century was in the age of Newton and it had Newton for its first-appointed Visitor. In order in a space of minutes to convey an impression of the operation of the Observatory and its significance in fundamental science, we may contemplate its part in the development of ideas regarding gravitation . The very first equipment Flamsteed had at Greenwich was a pair of splendid Tompion clocks presented by Sir Jonas Moore, F.R.S. These were pendulum clocks keeping what may be called gravitational time. The spinning Earth, producing the movement of the shadow on a sundial, keeps what may be called inertial time. In modern terms, these are essentially astronomers’ Ephemeris Time and Universal Time. To Flamsteed’s lasting credit, he appreciated that he must discover from observation whether these two times are the same, and this was his first important task. So far as he could tell, he did find them to be the same.

III. A tabular form of analysis, to aid in tracing the possible influence of past and present upon future states of weather

1867 ◽  
Vol 15 ◽  
pp. 470-474
Keyword(s):  
Royal Society ◽  
Tabular Form ◽  
Atmospheric Conditions ◽  
Present Communication ◽  
Cause And Effect ◽  
Royal Observatory

The data upon which the present communication is founded are derived from the 'Greenwich Reports,' from Mr. Glaisher’s papers in the Philosophical Transactions, and from my own observations at Guernsey. The latter were commenced in the autumn of 1842, in accordance with the recommendations of the Committee of Physics of the Royal Society, and were taken at the request of Professor Daniell, by whom the instruments employed were selected. These instruments, made by Newman, were after a time replaced by others, at the suggestion of Mr. Glaisher, by whom they were compared with the standards at the Royal Observatory. For my own guidance in the first instance, I sought to arrange the results thus obtained in such a manner as to discover, if possible, whether any month or class of months stood to each other in the relation of cause and effect; in other words, whether the atmospheric conditions of autumn exercised any distinguishable influence upon the fruitful or unfruitful character of ensuing seasons.

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