SOLAR POWER
You can
choose to use solar power rather than burning coal
for the electricity you personally use.
PSE&G
Electricity (in NJ) comes from:
35% burning coal
47% nuclear reaction
10% burning natural gas
3% burning oil
5% etc..
Green
Mountain Electricity comes from:
Wind:
Green Mountain Energy's Wind Farm in Garrett, PA.
Pennsylvania has
80 windmills, in Somerset, Fayette and Wayne counties.
It
won't cost you very much to switch to a clean energy source:
Green Mountain Energy = 7.56 cents / kWH
PECO (in PA) = 6.15 cents / kWH
One sixth
of the United States' electricity consumption is used for air conditioning.
In the US, most people spend about 90 percent of their time indoors.
-Newsweek, Aug 4, 2003.
a 4' x 2' solar panel can output 165 W
visit the Database of State Incentives for Renewable Energy at www.dsireusa.org
Carbon Emissions
average American = 20.0 tons per year
average Nepali = 0.1 ton per year
a flight from San Francisco to Paris emits 4 tons per passenger
[Sierra, October 2007]
fun
with physics
how long does it take sunlight to reach us?
the speed of light c is = 299 792 458 [m/s] (meters/second)
our sun is about 149 597 890 000 [m] from earth
it takes sunlight about 500 seconds (8 minutes and 20 seconds) to reach us
1 parsec = 3.26 light years
A parsec is the distance at which an object would subtend a parallax
angle of 1 arc second from Earth.
This corresponds to a distance of 3.08 x
10ˆ16 [m]
or
about 3.26 light years.
(about the size a dime would appear to be if seen from a distance of 2 miles)
e=mc²
When an atom of uranium-235 is split, it loses 0.1% of its mass.
Add a neutron to U235 (143 neutrons/92 protons), and it splits into:
(1) barium-141 (85 neutrons/56 protons),
(1) krypton-92 (56 neutrons/36 protons),
plus ( 3) "left-over" neutrons
3 left-over neutrons, with a mass of 0 .000 000 000 000 000 000 000 000 001
672[kg] each
total for the 3 = 5.016 X10 -28 [kg]
c² = 89875517873681764 [m2/s2]
e=mc² = (5.016
X10 -28 [kg])(89875517873681764
[m2/s2]) = 4051728.5 [J]
over 4 million joules
return
to top
home
Copyright © billhance.com. All rights reserved.