And while amorphous silicon can be turned into crystalline silicon by heating it, the high temperature required causes plastic to melt.

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Wolf Heiztechnik of Bavaria is developing a contract under which it sells temperature control rather than heating equipment.

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Nest claims it can save 20% on energy bills by managing heating more efficiently, and that adjusting temperature by just one degree can knock 5% off your bill.

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However, that distance depends largely on factors such as vehicle speed, number of passengers, ambient temperature and use of accessories like heating and air conditioning.

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In low external temperatures, the battery is quickly brought up to operating temperature with the aid of an electric heating element.

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As you can see in that lead shot up there, the screen intuitively shows the temperature in red when it's heating up, and turns blue when it's cooling.

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We can directly measure the results that solar forcing had, such as in driving CO2 out of the oceans by heating them up, and the resultant increase in temperature that this increase caused.

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Heating degree days are a measure of how long and how far the temperature stays below 65 degrees, that being the point at which people reach for their thermostats.

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Typically, the colder it is outside the faster the warm air from inside escapes, which can leave your heating system on all through the day without any noticeable difference to the temperature.

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