technology

Questions and Answers

Is geothermal energy more expensive than solar or wind energy?

Questions and Answers

It is often said that it is better to leave a lamp on than to turn it off for a while. How much...

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How long does it take to make a computer?

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What materials can you use to make a battery that supplies at least 12V and 100mA?

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Does a room with 4 radiators heat up as quickly as a room half as small with 2 radiators?

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Is the actual consumption of LED lamps higher than the wattage stated on the packaging?

Questions and Answers

Why is it that when I operate my light switch that my LED lamps dim?

Questions and Answers

how does a battery charger work?