Blogpost #20

This week we talked about capacitance, which is (usually short term) energy storage. It is the storage of a lot of voltage but not a great deal of charge. Mr. Blake talked about two examples: the buttons on a keyboard and a touchscreen. The reason why the letters I type on this blogpost show up on the computer is because I am closing the distance between the top plate and the bottom plate when I press down. This sends a signal to the computer to type that letter. In between the top and bottom parts is dielectric material, which is an electric insulator. Touch phones, like the one above is able to function because of the same sort of idea as the buttons on a keyboard.