Compact Fluorescent Lamps In Focus

Energy savings

CFLs use 70 to 80 percent less energy than incandescent bulbs. The typical incandescent lamp wastes 90 percent of the energy it uses since it produces heat rather than light. A 100-watt incandescent lamp may be replaced with a 20 to 23-watt CFL. Although CFLs may appear different than the common incandescent bulbs, CFLs fit most standard fixtures found in homes today. The screw-in base is the same for both lamps.

Long Life

CFLs last approximately 6,000 tto 10,000 hours. This is 8 to 13 times longer than the life of an incandescent lamp with an expected life of 750 to 1,000 hours.

Warm Light

Most CFLs have improved color rendition. The light is of a warm tone that is almost identical to that of an incandescent lamp. Most people can't tell the difference.


Savings chart - Quality CFL vs. quality incandescent bulb




Taken from The Philippine Star

Joint

1 in geology, fractures in rock that may occur as parallel sets or, more commonly, in an irregular and less systematic manner. Where a set of joints can be identified, it can usually be related to tectonic (that is to do with deformation of the Earth) stresses and the geometry of the rock body. There are several types of joint: unloading joints, which are caused by the release of stress on rocks at depth as overlying rocks are removed by erosion; cooling joints, which occur in igneous bodies; and joints that are related to regional deformation (on a wide scale).

2 In biology, the point at which bones and the surrounding tissues meet. They may be fixed joints (as in the cranium), slightly movable (e.g., joints in the spine) or freely movable (e.g., knee, arm). The movable joint types also differ -- ball and socket (hip) or hinge (elbow).

Taken from Dictionary of Science