Wednesday, 5 August 2015

Artificial Lights

Artificial Lights 

There is many different artificial lights and their specific use of it.

Type of Lights

Incandescent:

An incandescent bulb consists of a filament that glows when electricity is passed through it.
Incandescent Bulb


         Halogen Lamp:

A halogen lamp is a type of incandescent lamp where high-pressure halogen gas is inside the bulb allowing the filament to burn hotter and longer.

 

 

 

                                                     Gaseous Discharge



 This technology passes electricity through a gas, which excites the gas and causes it to glow. Fluorescent, high-intensity discharge lights (HID) and low-pressure sodium lights use this technology. HID lamps use different gases to produce light:
  • Mercury Vapor
  • Metal Halide
  • High Pressure Sodium
These types of lights require a ballast, which is a device that starts the lamp and regulates its operation.

Ballast

 

LED

LED’s are the newest type of artificial light and were born out of the electronics and computer industry. An LED is a tiny electronic device that emits light.

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