A guide to the scientific knowledge of things familiar / by the Rev. Dr. Brewer.

  • E. Cobham Brewer
Date:
[1863]
Catalogue details

Licence: Public Domain Mark

Credit: A guide to the scientific knowledge of things familiar / by the Rev. Dr. Brewer. Source: Wellcome Collection.

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    through the doors and windows), till itt has become heated, remains on the floor of the room. CHAPTER XXIII. BAROMETER. Q. What is a bahometeb ? A. A weather-glass, or instrument to > measure the variations in the weight of the air. Basometek is a compound of two Greek words, Bopos (weiiiht) and fierpov (a measure). It is called a weather-glass, because changes of weather are indicated by its varying conditions. Q WJiat is a theemometee ? A. An instrument to show how hot or cold anything is. Thermometer is a compound of two Greek words, ©ep^ics (heat), and ixtrpov (a measure). Q. What is the diffeeencb between a I'HEEMOMETEE and a BAEOMETEE ? A. In a THERMOMETER the mercury is sealed up from the air; and rises or falls, as the vandng temperature of the air expands or contracts it: but