Home > Europe > United Kingdom > England > London > Towns > Eltham
Instruments used by Mr. Glaisher during his balloon ascent, 1862. Creator: Unknown
Wall Art and Photo Gifts from Heritage Images
Instruments used by Mr. Glaisher during his balloon ascent, 1862. Creator: Unknown
Instruments used by Mr. Glaisher during his balloon ascent, 1862. 1. Barometer; 2; Wet and Dry Bulb Hygrometer; 3. Daniell's Hygrometer; 4. Chronometer; 5. Bucket of Water to keep Bulb wet; A. B. Shields to protect Bulbs from radiation...Mr. Coxwell having planned an ascent with his large balloon from the Crystal Palace, I availed myself of the offer of a seat in the car for the purpose of taking a series of observations upon the variations of temperature and the several hygrometrical states of the atmosphere at moderate elevations...These instruments had been made by Messrs. Negretti and Zambra with great accuracy...The balloon left the earth at 4h. 40m. 10s. laden with thirteen gentlemen and a large amount of sand for ballast, and, under the influence of a moderate breeze, bore away slowly nearly south-east, passing successively Eltham, Hartford, to the village of Singlewell, near Gravesend...Between 4h. 46m. and 5h. the altitude and azimuth of the balloon were observed at the Royal Observatory, Greenwich...From a knowledge of the temperature of the dew point we know the amount of water then present in a certain mass of air'. From "Illustrated London News", 1862
Heritage Images features heritage image collections
Media ID 35123043
© The Print Collector/Heritage Images
Air Transport Altitude Altitude Measurement Balloon Ballooning Barometer Chronometer Flight Gas Balloon Hot Air Balloon Instrument Instruments Machine Machinery Measurement Measurements Radiation Research Scale Scale Drawing Scientific Apparatus Scientific Instrument Temperature Hot Air Balloons Hygrometer James Glaisher Manned Flight
FEATURES IN THESE COLLECTIONS
> Animals
> Insects
> Hemiptera
> Black Scale
> Europe
> United Kingdom
> England
> London
> Boroughs
> Greenwich
> Europe
> United Kingdom
> England
> London
> Royalty
> Europe
> United Kingdom
> England
> London
> Sights
> Crystal Palace
> Europe
> United Kingdom
> England
> London
> Towns
> Eltham
> Europe
> United Kingdom
> England
> London
> Towns
> Greenwich
> Europe
> United Kingdom
> England
> London
> Weather
EDITORS COMMENTS
This photograph showcases a collection of scientific instruments used by the renowned British scientist, Mr. Glaisher, during his balloon ascent in 1862. The image features six distinct instruments that played a crucial role in his meteorological observations. Firstly, the barometer (1) was essential for measuring atmospheric pressure. Next to it, a pair of wet and dry bulb hygrometers (2) were used to determine the relative humidity of the atmosphere. The Daniell's hygrometer (3) was another hygrometer, which measured the amount of water vapor in the air by comparing the evaporation rates of two mercury columns. A chronometer (4) was included for precise timekeeping, while a bucket of water (not visible) was used to keep the bulbs of the wet and dry hygrometers wet. Lastly, A.B. shields (not visible) were employed to protect the bulbs from radiation. Mr. Glaisher embarked on this ascent as a passenger in Mr. Coxwell's large balloon from the Crystal Palace. His primary objective was to gather data on atmospheric temperature and humidity at various altitudes. These instruments, skillfully crafted by Messrs. Negretti and Zambra, played an indispensable role in this groundbreaking scientific endeavor. The balloon lifted off at 4h. 40m. 10s., with thirteen gentlemen aboard and a substantial amount of sand for ballast. It drifted slowly towards the south-east, passing over Eltham, Hartford, and the village of Singlewell, near Gravesend. The altitude and azimuth of the balloon were later observed at the Royal Observatory in Greenwich. By measuring the temperature of the dew point, Mr. Glaisher could calculate the amount of water present in a given mass of air, providing valuable insights into the atmospheric conditions during his ascent.
MADE IN AUSTRALIA
Safe Shipping with 30 Day Money Back Guarantee
FREE PERSONALISATION*
We are proud to offer a range of customisation features including Personalised Captions, Color Filters and Picture Zoom Tools
SECURE PAYMENTS
We happily accept a wide range of payment options so you can pay for the things you need in the way that is most convenient for you
* Options may vary by product and licensing agreement. Zoomed Pictures can be adjusted in the Cart.
