Bibliography

All pictures were retrieved from google searches

Information on The voltaic pile
(2014). In "Wikipedia the free encyclopedia. Retrieved from www. Wikipedia.org/wiki/Voltaic_Pile

Information on Alternating current
(2014). In "Wikipedia, the free encyclopedia. Retrieved from http://Wikipedia.org/wiki/Alternating_current

Information on the iPhone
(2014). In "Wikipedia, the free encyclopedia. Retrieved from www. Wikipedia.org/wiki/iPhone