Ask Randall

Randall Whitehead lighting designer
Randall Whitehead, IALD

Randall Whitehead, IALD, is a professional lighting designer and author. His books include "Residential Lighting, A Practical Guide." Whitehead has worked on projects worldwide, appeared on the Discovery Channel, HGTV and CNN, and he is regular guest on Martha Stewart Living Radio. Visit his website www.randallwhitehead.com for more information on books, upcoming seminars and the latest lighting trends.

Recent Posts

December 05, 2011
Okay, technically this is not a question but more of a declarative statement. Here’s the bottom line: Seeing is believing. I take potential clients...
December 05, 2011
I do agree that what people are buying at the grocery and big box stores are not the best CFLs on the market. They are simply the cheapest. For good...
December 05, 2011
The more advanced screw-in CFLs (like those made by TCP Inc.) have electronic ballasts, so they should be compatible. Also, the fixture manufacturers...
December 05, 2011
Both screw-in CFLs and standard incandescent lamps have shorter lives when put into recessed fixtures. The heat rises toward the base and weakens it...
December 05, 2011
I did my research but could not find any specific studies that compared the life of a lamp shade using a CFL to one using an incandescent source. I...
December 05, 2011
Yes, CFLs do contain mercury; it is an essential element of the bulb’s anatomy, without which it could not operate. The amount of mercury used in a...
December 05, 2011
We need to break this question down into two categories. The first would be manufacturers of CFLs that are dimmable and that screw into a standard...
December 05, 2011
Thank you for your full-bodied response to my March column, “Seeing Red About Green”— which was a counterpoint to a reader’s reaction to February’s “...
December 05, 2011
These days it means reflector luminaire manufacturer, but originally it meant reflector light microscopy. It is a fixture that is designed to project...
December 05, 2011
Using dimmable cold cathode lamps (known as CCFLs) is a good way to go. They have an average rated lamp life of 25,000 hours, as compared to CFLs at...

recent articles

Residential Lighting: How did your work with blue LEDs come about? Shuji Nakamura: From 1979 to 1988,I worked on developing... read full story
Kitchen and bath lighting represents a huge profit center for many showrooms, so for some, membership in the National... read full story
Q: Congratulations on landing the Global Views design partnership. How is it going?  A: I was told my first licensing... read full story
Brandon WeissFounder/PrincipalEvolutionary Home Builders Evolutionary Home Builders, Geneva, IL, focuses on sustainable and... read full story

Webinars

Sponsored by Pure Lighting/Edge Lighting and Spotlite-USA.   Wednesday, Feb. 25, 2-3 p.m. EST Register for this free CEU webinar by clicking here. Webinar Overview:... read full story
Sponsored by Access Lighting, Engineered Lighting Products, Langlais Group Inc., LTF and Pure Lighting/Edge Lighting.   This webinar has already taken place, but you can... read full story
Sponsored by Access Lighting, Engineered Lighting Products, Ferguson, GM Lighting and Maxim Lighting/ET2.   This webinar has already taken place, but you can view an... read full story