25 Juli 2008 - -
(punkte:
+2, bewertungen:
1)
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ja richtig gehoert, diese uhr braucht keine batterie und nutzt nur den luft temperaturunterschiede waehrend eines tages aus. 1 grad celsius temperaturunterschied reicht aus um diese geniale uhr fuer zwei tage am leben zu erhalten. mehr informationen dazu in englisch:
| The Atmos 561 is an interesting clock to say the least. The energy required to power the clock comes from temperature variation, as long as there is 1-degree Centigrade of variation between 15-degrees and 30-degrees in a given day, the clock will have all the power that it needs for a full two days of operation. |
Its power source is a hermetically sealed capsule containing a mixture of gas and liquid ethyl chloride, which expands into an expansion chamber as the temperature rises, compressing a spiral spring; with a fall in temperature the gas condenses and the spring slackens. This motion constantly winds the mainspring. A variation in temperature of only one degree in the range between 15 and 30 degrees Celsius is sufficient for two days’ operation. |
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