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light bulbs

How Light Bulbs Work
Image: iStockphoto.com/ryasick

How Light Bulbs Work

From the incandescent and fluorescent bulbs that light our homes to the LED strings that twine around Christmas trees and summer patios, all light bulbs rely on excited atoms.

Explore how a handful of parts — two metal contacts, a thin filament, and a glass or plastic globe — come together into the simple invention that's changed how we live.

HowStuffWorks
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Let It Glow 2

Let It Glow 2

How hard is it to turn on a light bulb? Much harder without a switch! In this game you need to connect a lightning bolt to a bulb by dropping in transmitters. More...

Game
Teagames.com
No, You’re Not Hallucinating: Designer Unveils Wooden Light Bulb

No, You’re Not Hallucinating: Designer Unveils Wooden Light Bulb

A light bulb made from wood? Sounds impossible, but a Japanese artist has created one, blending craft and science, modern and traditional. More...

Article
Mashable
Great Minds: Nikola Tesla

Great Minds: Nikola Tesla

Everyone knows the story of Thomas Edison and the electric light, but that's only half the story. Meet Nikola Tesla, who worked with (and against) Thomas Edison in lighting up our world. More...

Video
SciShow
High-Tech Fashion

High-Tech Fashion

Project Runway fashion designer Diana Eng helps the SciGirls create an electrifying gown. More...

Video
SciGirls/PBS
Make a Homemade Light Bulb

Make a Homemade Light Bulb

Learn from this guy's mistakes. Then grab pencil lead, copper wires, a glass jar, and batteries and create your own light bulb. More...

Activity
HouseholdHacker
The Curious Evolution of Holiday Lights

The Curious Evolution of Holiday Lights

Explore the evolving technology of holiday lights from the first string on a Christmas tree in 1882 to bubble lights, safety fuses, and programmable lighting systems. More...

Article
WIRED
Bright Light, Big Price

Bright Light, Big Price

A light bulb that lasts 27 years? That's roughly 30,000 hours — 30 times the lifespan of the average incandescent bulb. Take a look at this revolutionary new glow. More...

Video
CNET
Build a Light Bulb: Circuit Science

Build a Light Bulb: Circuit Science

Build a homemade light bulb and the complete circuit to light it with these step-by-step directions. More...

Activity
Steve Spangler Science
CFL vs. Traditional Incandescent Bulbs

CFL vs. Traditional Incandescent Bulbs

Is it time to say goodbye to the incandescent bulb? Take a look at this comparison video and its argument for using compact fluorescent bulbs. More...

Video
Little Green Bulb
How Christmas Lights Work

How Christmas Lights Work

When it comes to power consumption, how do today's LED lights compare with older incandescent bulbs? And why are mini-light strands so sensitive to the loss of a single tiny bulb? Find out. More...

Article
HowStuffWorks
How It’s Made: Light Bulb

How It’s Made: Light Bulb

Take a look at how the glass bulb and the mount are manufactured separately and then brought together into a incandescent light bulb. More...

Video
Science Channel
Video: Light Bulb Filament

Video: Light Bulb Filament

Hard to believe given the size of a light bulb, but the filament is more than 20 inches long. Take a look at the fascinating engineering behind the seemingly simple incandescent bulb. More...

Video
EngineerGuy.com
You’re a Dim Bulb

You’re a Dim Bulb

How much energy does it take to power our brains? About as much as it takes to power a dim bulb. Seriously. More...

Article
Discover Magazine

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