Friday, November 6, 2009
Power to the People (FPOTW)
Incandescent light bulbs are very inefficient. Use a google search engine to find out just how inefficient.
Compact florescent bulbs are much more efficient in the percentage of watts producing visible light.
This information is also on google.
www.google.com "how to use google" is a good place to start. =)
---- Start Fermi Problem ----
Estimate how many incandescent 100 Watt light bulbs there are in the United States.
Estimate how much power is used to power the light bulbs.
Estimate how much power is saved by switching all the light bulbs to equivalent lumen compact florescent.
Assume that the old light bulbs are thrown away. How much landfill space is taken up if the bulbs are not broken?
How about if the bulbs are broken?
What is the mass of the broken bulbs?
Some Physics: What is the weight of the broken bulbs compared to the weight of the unbroken bulbs? Remember, I said "weight" here.
---- End Fermi Problem ----
Estimate how many Poles it takes to screw in all those light bulbs. (old POLEitically incorrect ethnic joke here)