Light Bulb: Difference between revisions
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[http://en.wikipedia.org/wiki/Incandescent_light_bulb '''Bulbs'''] are used as a form of illumination or indication and the type commonly used has a filament coil which glows white hot when a current passes through it. The filament is in a space filled with an inert gas to aid light output and to prevent oxidisation of the filament | [http://en.wikipedia.org/wiki/Incandescent_light_bulb '''Bulbs'''] are used as a form of illumination or indication and the type commonly used has a filament coil which glows white hot when a current passes through it. The filament is in a space filled with an inert gas to aid light output and to prevent oxidisation of the filament | ||
Bulbs consume more power than '''[[Light Emitting Diode|LEDs]]''' but give a high light output. There are two common types of bulb used in schools MES and LES - which are smaller in physical size than MES types. They may be bayonet or screw cap but screw types are more common. | Bulbs consume more power than '''[[Light Emitting Diode|LEDs]]''' but give a high light output. There are two common types of bulb used in schools [http://en.wikipedia.org/wiki/Edison_screw#Types '''MES'''] and [http://en.wikipedia.org/wiki/Edison_screw#Types '''LES'''] - which are smaller in physical size than MES types. They may be bayonet or screw cap but screw types are more common. | ||
Revision as of 17:47, 12 November 2014
Bulbs are used as a form of illumination or indication and the type commonly used has a filament coil which glows white hot when a current passes through it. The filament is in a space filled with an inert gas to aid light output and to prevent oxidisation of the filament
Bulbs consume more power than LEDs but give a high light output. There are two common types of bulb used in schools MES and LES - which are smaller in physical size than MES types. They may be bayonet or screw cap but screw types are more common.