the Human affect?
i have posted a similar statement in other threads but i have revised it to give the benefit of the doubt in as many variables as possible. now i am no scholar but i have spent allot of time and energy in double checking the figures, so if a mistake in calculation or content is made please inform me of the correction.
lets see what you think?
Question: What is the comparison of how much energy humans consume each day vs what the sun adds to the earth each day?
According to the US Energy Information Administration, the world used ~490 x 10^15 BTUs OR 500 x 10^18 Joules in 2008, which converts to 1.584 x 10^13 watts per year or 4.34 x 10^10 watts per day.
According to Wikipedia and their references from Statistical Review of World Energy 2009, BP Oil Corporation, a total of 15 terawatts or 1.504 × 10^13 watts OR 15,040,000,000,000 watts per year are used by humans. That equates to 42,200,000,000 watts or 4.22 x 10^10 watts used by humans per day.
According to recognized studies of Charles Greeley Abbot and a quote from Wikipedia, “the Earth receives 174 Petawatts (PW) of incoming solar radiation (insolation) at the upper atmosphere. (solar constant) Approximately 30% is reflected back to space while the rest is absorbed by clouds, oceans and land masses.” In context, 176 PW or 1.760×10^17 or 176,000,000,000,000,000 watts per day hit the Earths atmosphere and if 30 percent of that is reflected, 1.23 X 10^17 watts per day enter our world.
So humans consume about 3.43 x 10^-7 or 0.000000343% or 0.0% relative to what enters our atmosphere every day.
1 BTU = 1060 JOULES
1 JOULE PER SEC = 1 WATT
A REAL YEAR IS 365.25 DAYS
1 YEAR = 31557600 SECONDS
http://en.wikipedia.org/wiki/Sun_ene...y_from_the_Sun
Last edited by saabtech; Sun, 23rd May 2010 at 10:00 PM.
Reason: the exponential symbol was missing somehow "^"
how can i pray for you?
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