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Hygrometer - Daniell Type
Reg. No: ST 022144
- Summary:
- 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
| Discipline: | Technology |
| Dimensions: | 18.2 cm (Height), 12 cm (Width), 6.5 cm (Length) |
More information
| 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 |
| Secondary Classification: | Meteorology |
| Tertiary Classification: | hygrometers |
| User: | Melbourne Observatory, South Yarra, Victoria, Australia |
Themes
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
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