Ambient Weather WS-YG710S-G Galileo Weather Station with Thermometer, Barometer, Hygrometer and Clock
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<b>[Product Information]</b><br>
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<li>The rich, wood framed classic weather station measures temperature (galileo), barometric pressure (in and mbar), humidity (%) with analog clock.</li>
<li>The Galileo thermometer consists of a sealed glass tube that is filled with liquid and several floating bubbles. The bubbles are glass spheres filled with a colored liquid mixture.</li>
<li>Attached to each bubble is a little metal tag that indicates a temperature. These metal tags are calibrated counterweights. The weight of each tag is slightly different from the others.</li>
<li>The bubbles are calibrated by adding a certain amount of fluid to them so that they have the exact same density. So, after the weighted tags are attached to the bubbles, each differs very slightly in density.</li>
<li>As the temperature of the air outside the thermometer changes, so does the temperature of the liquid surrounding the bubbles.</li>
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