The purpose of this experiment is to determine if the type of gas inside a light bulb has any effect on the brightness of the bulb, and if so what type of gas produces the brightest bulb.
It was hypothesized that the type of gas inside of the light bulb does have an effect on the brightness of the light and helium was hypothesized to produce the brightest light.
1.
Flask
2. Power Supply
3. Wire
4. Helium
5. Butane
6. Methane
7. Three Holed Stopper
8. Light Meter
To begin the experiment, a flask was plugged with a three holed stopper and two pieces foil wire were placed in the flask through one of the holes in the stopper. The wires were connected by the filament of, a standard, one hundred watt bulb. Next, gas was pushed into the flask through one hole while the air previously in the flask was forced out through a valve in the third hole. The valve was then shut off and the ends of the wire were connected to a power source. The lights were cut off and the power turned on. The brightness of the light was recorded and then the process was repeated three times fore each gas.
It was concluded that methane gas produces the brightest light in a light bulb.