Recent content by MichaelsTech

How can a voltage be applied if it is not a complete circuit?

How do transmitters convert electrical signals into photon energy?

When my skin absorbs visible light, what is actually absorbing the photons, the nucleus, electrons, or both? Is it true that when the nucleus is put into a high energy state that it will dump energy as electromagnetic radiation? What is causing us to emit infrared light, the energy is to high in...

People always tell me that microwave ovens heat food by exciting the water molecules in food. This is done by blasting food with 2.4 Ghz radiation, the people that say this, also say that the frequency that is used is critical because that frequency interacts with the water molecules. I wonder...