Hygrometer - Daniell Type Reg. No: ST 022144
- Daniell hygrometer, used at Melbourne Observatory.
Consists of 2 thermometers, one immersed in a volatile liquid which by evaporation, lowers temperature to dewpoint. The other thermometer is fixed to the stand & records temperature of uncooled air. Originally invented by English chemist and meteorologist John Frederic Daniell in 1820.
A hygrometer measures the amount of humidity in the atmosphere.
- Acquisition Information:
- Transfer from Melbourne Observatory, 1945
|Dimensions:||18.2 cm (Height), 12 cm (Width), 6.5 cm (Length)|
|Tagged with:||hygrometers, meteorological apparatus instruments|
|Themes this item is part of:||Melbourne Observatory Collection, Science & Measurement Collection, Positional Astronomy at Melbourne Observatory, Weights & Measures at Melbourne Observatory, Melbourne Observatory & Standard Time in Victoria, Astrographic Catalogue, Transits of Venus, 1874 & 1882, Buildings at Melbourne Observatory, Star Observations & Personal Equation, Meteorology at Melbourne Observatory, 1863-1908, Melbourne Observatory, 1863-1944, Geodetic Survey of Victoria, 1858-1872|
|Primary Classification:||PHYSICAL SCIENCES|
|User:||Melbourne Observatory, South Yarra, Victoria, Australia|
This item is part of the following themes:
- Melbourne Observatory Collection
- Science & Measurement Collection
- Positional Astronomy at Melbourne Observatory
- Weights & Measures at Melbourne Observatory
- Melbourne Observatory & Standard Time in Victoria
- Astrographic Catalogue
- Transits of Venus, 1874 & 1882
- Buildings at Melbourne Observatory
- Star Observations & Personal Equation
- Meteorology at Melbourne Observatory, 1863-1908
- Melbourne Observatory, 1863-1944
- Geodetic Survey of Victoria, 1858-1872