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  • Essay / Essay on the effect of the photoelectric effect - 1014

    ContentIntroduction: 2What is the photoelectric effect? 2Origin of the photoelectric effect: 35Modern applications of the photoelectric effect: 5Bibliography: 6Contributors: 6On how the photoelectric effect affects our daily livesChristiaan MyburghElmar RouxTijmen van der SteenhovenIntroduction:The photoelectric effect has an important effect on our daily lives. It is used in several important technological devices, such as solar panels and burglar-proof sensors. The effect was discovered over a long period of time and the research of several scientists contributed to it, but it was Albert Einstein who found a correct formula for determining the energy of a photoelectron (the electron that is ejected due to of the photon striking the electron in the atom)What is the photoelectric effect?The photoelectric effect occurs when photons of light strike an atom. The energy of the photons is converted and ejects an electron. Each element requires a certain amount of frequency and wavelength to react in this way. How to test this: A metal plate is attached to a galvanometer with two wires, if light with the right frequency and wavelength is shone on it, a current will be registered with the galvanometer. (A galvanometer measures electric current and its flow.) Readings may show that electrons have been ejected. The ejected electrons flow through wires to the galvanometer and this causes a reading. Origin of the photoelectric effect: The first scientist to notice the photoelectric effect was Heinrich Herts, in 1887. He observed that electrodes illuminated by ultraviolet light caused easier sparking. .JJ Thomson was the first to identify sparks emitted by metals as electrons...... middle of paper ......ns.wikidot.com/photoelectric-effect http://www. ask.com/question/photoelectric-effect-practical-uses http://www.scienceclarified.com/Oi-Ph/Photoelectric-Effect.html http://chemistry.about.com/od/electronicstructure/a/photoelectric- effect.htm Each of these websites was accessed on April 19, 2014Contributors:Christiaan Myburgh: interpreted the information and chose the wording of the final content. Typed reportParents provided boneless subs, coffee and snacks.Elmar Roux: provided information and research.Typed report Provided beef, coffee, biscuits.Tijmen van der Steenhoven: Presentation designed and typed .Typed report.Steak and chips provided!!!! , coffee.