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Approximately 1300lb carbon emissions produced per MWH electricity used
LED indicator consumes approx 5mA at 2.5V = 0.0125 W/s = 45 W/h
8x5x50 (8 hours a day, 5 days a week, 50 weeks a year) = 2000 hours
2000h x 24W/h = 0.048 MWh
0.048 MWh x 1300lb = 62.4 lb emissions
Turn off your num-lock when you are not using the numeric keyboard and save in excess of 60 pounds carbon emissions each year. For every 30 WebmasterWorld members who take part, we save a ton of carbon emissions a year.
200 billion galaxies with and average of [url=http://astronomy.swin.edu.au/~gmackie/billions.html]400 billion stars [curious.astro.cornell.edu] (suns) in each one. Do the math on that one baby. 400 billion times 200 billion. Wow - that's alot of energy!
It those terms, it sure makes those screaming "energy crisis" seem absurdly laughable. I am all in favor of cutting carbon emissions, but surely not by cutting power usage. I am in favor of people using more and more energy. The universe is full of more energy than we can use in a trillion to the trillionth power of years. The answer is noncarbon based fuel. Wind, atomic, geo thermal, and solar are the combined answer (with atomic power the center peice).
are we okay to use paraffin lamps
No, but it is acceptable to use candles, if and only if they are home made from the bits of fat that you failed eat when you should have.
In times of severe lack-of-light distress, it is permissable to burn your neighbor's house down, provided that they had a habit of leaving their num-lock on.
NB - Perhaps I should stress that this a joke, do not try this at home.
[edited by: Quadrille at 8:31 pm (utc) on Dec. 12, 2008]
Isn't it crazy how more and more devices have always-on LEDs when not actively in use?
Perhaps I should stress that this a joke, do not try this at home.I'm not sure what bothers me more: The fact that I'm killing the earth by using my power hungry monitor to read a thread on turning off my num-lock light to save a tiny amount of power, or that you felt it necessary to clarify that burning a neighbours house down was not a serious suggestion!