Wednesday 15 January 2014

From Edison bulbs to CFL and now LED


Edison bulbs giving way to the new CFL  Now LED.












Bulbs

Unlike incandescent light bulbs, CFLs are available in a variety of color temperatures to suit every room in your home. Color temperatures are measured in degrees Kelvin K. The higher the temperature, the whiter the light.

Colour
Kelvin (varies according to co)
Colour
Use
Soft white
2700K
Little yellow - warm
Warm full glow for living rooms, dining rooms, bed rooms recreation rooms
Bright white
3500-4100K
Fresh white
True white
Gives a clean , crisp illumination ideal for kitchen, bath rooms, reading and work
Natural
5000K
Little blue, cool
More natural
Daylight
6500K
More blue
Daylight gives off bright, quality light for reading and detailed oriented activities, office, den, laundry, and basement.


Incandescent bulb wattage
Equivalent  CFL (Approx.)
Lumens (brightness
40W
9
450lm
60W
13
800lm
75W
18
1100lm
100W
23
1600lm
150W
42
2600lm

Flood bulb is used for reflective spaces like recessed light, dining table  light, pot lamps etc


Don't buy anymore CFL and Tube lights. Tube lights and CFL contains mercury. Now cheap unbreakable LED lights with long life is available. Go for LED



For further reading refer


http://lightbulbmarket.wordpress.com/





http://www.springlightcfl.com/home_lighting_tour.aspx

http://www.nola.com/homegarden/index.ssf/2013/12/say_goodbye_to_energy-guzzling.htm