light By Anish Persaud
Humphry Davy Humphry Davy created the first electric light in 1800. Humphry took a piece of carbon and a battery and attached them with two wires. The carbon lit up creating light. This is called an electric ark. Humphry Davy made the 1st light bulb in 1809
Incandescent lamp • Most inefficient type of light bulb • incandescent light is an electric light which creates light with a wire heated to a high temperature by an electric current until it glows.
Limelight • A limelight was used to light up stages. • The limelight is also know as a calcium light. • A limelight is a made out of a blowtorch and a piece of lime. When the flame heats up the lime, it lights up.
Energy saving light bulb • The energy saving light bulb need a lot less energy to operate than an incandescent light bulb. They save money and last longer (around 3/4 times). • The European Union has banned the manufacture and distribution of all incandescent light bulbs , meaning that the 60 watt clear bulbs will no longer be made.
L.E.D lights • LED stands for Light-Emitting Diode • L.E.D lights are very expensive. However they last forever and so are more efficient than any other lights. • LED lights are relatively new technology.
The Florescent Tube • We see florescent lighting virtually everywhere, offices, stores etc.. • It converts electrical power into useful light more efficiently than an incandescent lamp. • Standard fluorescent light bulbs created and used in the 1930’s
Bibliography • http://wiki.answers.com/Q/Who_invented_the_light_bulb • http://en.wikipedia.org/wiki/Limelight • http://home.howstuffworks.com/fluorescent-lamp.htm • http://en.wikipedia.org/wiki/Fluorescent_lamp • http://www.youtube.com/watch?v=aPaeIFjpoQ8 • http://en.wikipedia.org/wiki/Incandescent_light_bulb • http://www.energysavingtrust.org.uk/Electricals/Lighting/Lighting-products/Energy-saving-light-bulbs-take-over#europe • http://www.which.co.uk/energy/energy-saving-products/guides/your-light-bulb-concerns-answered/
Bibliography • http://www.cocoonyourhome.co.uk/section/content/?pageID=391 • http://answers.yahoo.com/question/index?qid=20120325155727AAS1l61 • http://wiki.answers.com/Q/What_does_LED_stand_for_as_in_LED_TV