Apples and magnet. For this experiment you need to build suspension from chop sticks. Put 2 apples at opposite ends of the stick and after that bring a magnet very close (you need very strong magnet.

A heat pump might pull 500wh of heat from outside for 500wh of electricity, but because you combine those, you get 1kwh heating for just 500wh of power, which is 200% efficient. Report comment Reply ...

A gigantic 3,000-ton structure at the ITER project in France promises to contain burning plasma, bringing fusion energy ...