Lamp | Definition, History, Types, & Facts | Britannica
Argon Lesson for Kids: Facts & Properties | Study.com
Howstuffworks "How Light Bulbs Work"
Your Guide to Incandescent Light Bulbs — 1000Bulbs.com Blog
Why is neon gas in an electric bulb? - Quora
1 Structure of an incandescent lamp | Download Scientific Diagram
An Incandescent light bulb | Download Scientific Diagram
Neon lamp - Wikiwand
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GENERAL ELECTRIC AR-1 Argon Glow Discharge Lamp
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Which gas is typically used in light bulb? - Quora
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Incandescent light bulb - Wikipedia
Neon and Argon Glow Lamps - How they work & History
How an Incandescent Light Bulb Works — 1000Bulbs.com Blog
Why are electric bulbs filled with argon? - Quora
Set of noble gases in ampoules - Helium Neon Argon Krypton Xenon discharge lamps | eBay
Nearly a third less electricity used to light homes than in 1997 | Financial Times
