Lumens and Mesopic Vision
How do lumens change in the area of mesopic vision?

Perceived Changes Related to Fluorescent Retrofits
What changes can I expect to notice when retrofitting T12 lamps with T8 lamps?

Fading and Discoloration in Relation to Lighting
How can controlling lighting limit the fading and discoloration of materials?

Sources of Ultraviolet Blocking Materials
Where can I get materials to block ultraviolet (UV) radiation?

Color Codes
How do I relate the European color designations to those used in North America?

Dichroic Filters
How do dichroic filters work?

Health Issues

Winter Blues or Cabin Fever
How can I use lighting to help cure cabin fever?

Neonatal Intensive Care Areas and Fluorescent Lighting
Should I avoid using fluorescent lighting in neonatal care areas?

Full-Spectrum Lighting
What is full spectrum lighting and are there any related health benefits?

Seasonal Affective Disorder (SAD)
What is SAD and which lamps can be used to treat it?

Fluorescent Lighting and Ultraviolet
Does the ultraviolet output from fluorescent lighting present health risks?

General Information

Dimming of Lamps
What is meant by "dimming" lamps?

Mean Lumens for Various Lamp Types
What are some mean lumen values for different lamp types?

Incandescent and Halogen Lamps

Temperature Concerns: Halogen Lamps
Are halogen lamps hot enough to cause fires?

Halogen Lamp Ultraviolet Output
Do tungsten halogen lamps emit ultraviolet radiation?

Performance of AR-Type Lamps
What is the lumen output of AR70 and AR111 lamps?

250-Watt Infrared Heat Lamp Warnings
What are the safety issues where heat or infrared lamps are concerned?

Temperature of Heat Lamps
Is there a difference in temperature between red and clear or inside frosted heat lamps?

Fluorescent Lamp Systems

Spectral Power Distributions of SYLVANIA Fluorescent Lamps
Can you send me the SPDs of your most popular fluorescent lamps?

Ballast-Lamp Technology Update
What are the differences among fluorescent lamp starting and operating technologies?

Cold Temperature Operation of Fluorescent Systems
How do cold temperatures affect the performance of fluorescent lamps and ballasts?

Compact Fluorescent Ballast Manufacturers
Who makes ballasts for compact fluorescent lamps?

Radioactive Materials in DULUX^® Lamps
Are there radioactive materials in DULUX compact fluorescent lamps?

High Intensity Discharge (HID) Lamp Systems

Mercury and Metal Halide Lamp Operation
What happens when mercury lamps are operated on metal halide ballasts, and vice versa?

Photo-Optic and Other Specialty Lamp Types

XBO^® Lamp Disposal
How do I properly dispose of XBO lamps?

Lighting Equipment

Power Factor
What is power factor?

Fluorescent Fixtures with Battery Back-up Systems
Can I retrofit a battery back-up system with electronic ballasts?

Electronic Ballasts and GFC Protection
Is it possible for electronic ballasts to trip circuits with ground fault circuit protection?

Specialty Applications

Light and Plants
How does the light produced by different GRO-LUX^® lamps affect plant growth?

Photosynthetically Active Radiation (PAR) Units
How can I evaluate the effect of different light sources on plant growth?

Color Change and Appearance of Meat Due To Lighting
What color light source should I use to display meat?

Industry Contacts

Lighting Industry Related Organizations
How do I contact organizations related to the lighting industry? (ANSI, CBM, IESNA, UL, LRC)