Jack+H

=Electromagnetic Energy=

Battery
====A battery is an object that uses electromagnetic energy and need electricity to work. It is made up of one or more electrochemical cells that convert potential energy into electrical energy. Every cell contains a positive terminal (cathode) and a negative terminal (anode). Electrolytes are what allow ions to move between the terminals. This allows the current to come out of the battery which can perform work on an abject. Primary or single use batteries can only be used once. The electrode materials inside of the battery are irreversibly changed when they are discharged. There are also secondary or rechargeable batteries that can be discharged and then recharged multiple times. This is done by restoring the reverse current which makes it the original composition of the electrodes. The battery is useful because it can let many different device or objects run on power like a refrigerator, phone, or TV.====



Experiment
====The purpose of the experiment was to find out what happens when light is shined on the black vanes and when light is shined on the white vanes. The materials used were a radiometer and a flashlight. The experiment was performed by shining the flashlight on the white vane and waiting to see what would happen to it. Then the flashlight was shined on the black vane and waiting to see what would happen differently. The results where that when the flashlight was shined on the white vane nothing would happen or it would sit still. When the flashlight was shined on the black vane it started to spin around in a circle. This is because the white vain reflects the energy the flashlight is giving off, which makes it an insulator. The black vane absorbs the energy that the flashlight gives off, so it is a conductor, and this causes it to turn the stored energy into heat and then release it. This causes it to spin in circles. This is how the radiometer works.====