4. Test bulbs for damage When to try it: When no bulbs are visibly damaged and the lights aren't working If no bulbs are visibly damaged, and your lights are not working, use a bulb tester, says ...

A tip from a Chicago reader: Regarding a topic that came up in your column some months ago, I would like to recommend a very simple solution to removing the base of a broken light bulb that’s… ...

How we test Light output Initial average brightness is measured by placing the bulb into a calibrated integrating sphere, which is connected to a light meter that records the lumens output of the bulb ...

The X-tremeVision bulbs are a more affordable upgrade for those looking to increase light output without the expense of LED lights.

Test your knowledge of light bulbs: how they work, their key components, the science of incandescence, and the role of materials like tungsten.

LED light bulbs are now affordable alternatives to other lights. How does the LED compare in terms of power, brightness and color?