Category: Ask the Engineer

Watts and Lumens – Old and New – Complicated or Simplified??

Ask most folks what light they have above the kitchen sink and common response is: “A 60 (or 75) watt”. More recently the answer might be: “A CFL (Compact Fluorescent Lamp)”. Much like the Dylan song….”The Times They Are A-Changin’”, new lamp terminology is being tossed around like a hot – well…incandescent light bulb. A…READ MORE

The Color of Light

Have you ever wondered why humans are emotionally affected by the color of light? Why do we enjoy the bright sunshine, feel its warmth, and energy? Why are we comfortable with the bluish-white “daylight” color but we are uncomfortable with that same color of light when it illuminates a room after dark?  Early cool-white compact…READ MORE

UV – ABC’s

UV (ultra violet) light is electromagnetic radiation that exists beyond visible light at the violet end of the spectrum. UV is divided into the A,B and C range and has many benefits. UVC is used for killing pond scum, sterilizing medical instruments and purifies air. Narrow band UVB is effective treatment for skin ailments including…READ MORE

New Federal Energy Standards and Light Bulbs

Rumors are beginning Jan 1, 2012; you will not be able to buy light bulbs. The facts are: President Bush signed the Energy Independence and Security Act on December 19, 2007. It requires roughly 25 percent greater efficiency for certain light bulbs and will be phased in from 2012 through 2014. This effectively bans the…READ MORE