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37cm Galileo Thermometer Wooden

Originally conceived in the early 1600's, this Galileo Thermometer gives you a guide to the temperature with 7 temperature indicator balls while being a feature piece in any home. view full description
$49.95

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description

This 37cm galileo thermometer has a temperature range of 16C to 28C and will give the owner a guide to the temperature by looking at the bottom ball in the cluster of coloured balls at the top. The solid wooden surround gives this intriguing conversational piece a beautiful frame and allows you to display this fascinating part of history anywhere in your home.

The Galileo thermometer (named after the famous Italian physicist Galileo Galilei) is a thermometer made of a sealed glass cylinder containing a clear liquid (usually paraffin or ethanol) and a series of sealed glass bulbs with different densities. It’s named after Galileo because he discovered the principle on which this thermometer is based – that the density of a liquid changes in proportion to its temperature. As the temperature increases, the density of the clear liquid decreases causing the bulbs to sink; and vice versa. Tags attached to the bulbs then allow you to determine the temperature.

The temperature is typically read from an engraved metal disc on each bulb. Usually a gap separates the top group of bulbs from the bottom group of bulbs, lowest ball of the top cluster determines the temperature. If a bulb is free-floating in the gap, then its tag reading would be closest to the ambient temperature.

Warning: This product is not a toy. Keep away from children. Contains Paraffin oil/Light wax oil. In case of breakage: If liquid becomes in contact with skin, rinse with plenty of water and ensure the room is well ventilated as the oil has a strong odour. Use gloves to clean up spills. Do not ingest. If ingested call your nearest poison line and wash out mouth with water.

specification

  • 37cm high (including frame)
  • Attractive Cherry Red Wooden frame
  • Temperature range 16C - 28C
  • Contains Paraffin Oil

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