Great List of Units and Conversions: http://www.chrismanual.com/Intro/convfact.htm
http://quickfacts.census.gov/qfd/
http://www.marsh-mcbirney.com/flowcalculator/index.htm
What is a magnetic field? http://www.phy6.org/earthmag/magnQ&A1.htm#q1000
Top Scientific Reference from Georgia State University
Measurement Conversion Charts Great Unit Conversion Calculator
An even greater unit conversion calculator!
http://www.math2.org/math/geometry/areasvols.htm
Amazing source for all kinds of cool info: http://www.amazing1.com/
Motor Formulas Hydrogen Data Help files for Stoichiometry
http://www.protonenergy.com/index.php/html/gasproducts/datacharts/index.html
Good Hydrogen study: http://members.tripod.com/lyng/hydrogen.htm
Total Number of Highways in the United States
Bureau of Transportation Statistics
CIA World Fact Book on World Wide Railroad Usage by Country
Total number of Highway Miles per State
According to the Texas Transportation Institute, Americans spent 4.5 billion hours stuck in traffic, with an estimated cost to the nation of $78 billion in lost time and wasted fuel.
The American Highway Users Alliance has recently estimated that fixing the nation's 167 worst bottlenecks over the next 20 years could prevent more than 287,000 crashes and save nearly 1,200 lives.
The changes between 1990 and preliminary 2000 data from the statistics of the Census Bureau are shown in the accompanying table.
|
1990 |
2000 |
|
|
|
DRIVE ALONE |
73% |
76% |
CARPOOL |
13% |
11% |
TRANSIT |
5% |
5% |
TAXI |
0% |
0% |
MOTORCYCLE |
0% |
0% |
BICYCLE |
0% |
0% |
OTHER |
1% |
1% |
WALKED ONLY |
4% |
3% |
WORKED AT HOME |
3% |
3% |
According to US DOT Federal Railroad Administration's Report to the Nation in the year 2000, page 9: "...in 1999, there were 443 million commuter railroad passengers( across 16 systems ), and an additional 21.5 million Amtrak passengers."
In the State of Michigan alone, 4 people die every day on roadways, and the annual costs of such trauma is approaching $9 Billion annually.
Ocean Science:
http://www.ocean98.org/fact.htm
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U.S.
POPClock notes NOTE: The U.S. POPClock has been recalibrated to be consistent with Census 2000 data released on 12/28/2000. |
World POPClock notes |