HOWTO: Make your own Light Bulb
This project is for those who want to turn back the hands of clock and put themselves right into the shoes of the real discoverers. So, today it's time for you to deck yourself with Thomas Alva Edison's attires and make a light bulb of your own.
You can find tungsten in any metal-supply shop. It'll not be easy for you to get rid of the air inside the glass bulb via a pump, which has to be done or it'll melt even a thick tungsten wire. In stead of creating a vacuum just displace the air with an inert gas, as a mixture of argon and nitrogen is used in common household bulbs, at the same pressure as the surrounding air.
Theodore Gray here used helium, which too is a viable option as it is easily available and lighter than air. The bulb here is a pretty big one; a glass ice bucket, sealed with tinfoil after filling it with helium. Just light it and see how it showers clean bright light on you.
Via: Livescience
