technology

Questions and Answers

Is there paint that changes color depending on temperature?

Questions and Answers

If we use all manure from agriculture, how much biogas and megawatt are we talking about?

Questions and Answers

Can other electrical devices play radio sound?

Questions and Answers

In the US you often see covered bridges, why are they covered?

Questions and Answers

Why does Apple put an I in front of everything?

Questions and Answers

Old telephones with a rotary dial always had a white button at the bottom left. What was the function of the button because...

Questions and Answers

Is the radiation of several cordless DECT telephones in a small space harmful?

Questions and Answers

When airplanes refuel, one must always apply an earthing, why is this not necessary for cars