Blog #4

Capacitance and Voltage. This week in physics we learned about capacitance. Capacitance is electrical energy that is stored for a short time. Capacitance has a very high electric potential but has little charge. So it has a lot of voltage per charge, but not a lot of charge. Its formula is C=Q/V (Capacitance=charge/voltage). The units of capacitance are known as farads. Capacitance is used a lot today because of all the technology we have. To use computers we need to press buttons. These buttons are basically made of 2 plates separated a certain distance with epsilon in between. Epsilon is the conductive material between the 2 plates. The material used in between plates in modern technology is known as dielectric. When the plates touch the material in between them it releases the capacitance and sends the high voltage to the brain of the computer. This tells the computer what to type on the screen.

    My picture relates to this because it uses capacitance for it to work since it is a touch screen phone.