Learn the science behind the headlines—the tools of terrorists, the dangers of nuclear power, and the reality of global warming. We live in complicated, dangerous times. They are also hyper-technical times. As citizens who will elect future presidents of the most powerful and influential... read more
“Laws of countries can be changed, but laws of physics are pretty much set”
“The real danger in shouting that the sky is falling is that it might not fall right away and people will lose interest”
power is the rate at which energy is used. Power can be measured in terms of calories per hour or joules5 per second. TNT has less energy than gasoline, but it delivers what little it has with such speed that it can shatter rock. Gasoline has more energy than TNT, but TNT can deliver more power than gasoline can.Highlighted by 20 Kindle customers
for the same energy, coal in the United States is 20 times cheaper than gasoline.Highlighted by 19 Kindle customers
Overhead sunlight delivers to the ground approximately 100 watts per square foot 1 kilowatt per square yard (or square meter) 1 horsepower per square yard (or square meter) 1 gigawatt per square kilometer 3 gigawatts per square mileHighlighted by 18 Kindle customers
A dirty bomb is not really a weapon of mass destruction, but it is potentially a weapon of mass disruption.Highlighted by 18 Kindle customers
28% is used for transportation (gasoline and jet fuel). 40% is used to generate electric power. 20% is used for direct heating (natural gas, coal). 32% is used by industry.Highlighted by 16 Kindle customers
29% from imported oil 11% from domestic oil 24% from coal 19% from natural gas (methane) 8% from nuclear 8% from others (solar, hydro, wind, biomass, geothermal)Highlighted by 15 Kindle customers
“There is a gigawatt in a square kilometer of sunlight, and that’s about the same as a nuclear power plant.”Highlighted by 14 Kindle customers
For the same weight, gasoline delivers approximately 2 times the energy of coal 2 times the energy of methanol (wood alcohol) 1.5 times the energy of ethanol (drinking alcohol) 1.1 times the energy of butanol (a likely future biofuel)Highlighted by 14 Kindle customers
The children of victims in Hiroshima and Nagasaki showed no significant increase in birth defects, according to a 2006 National Academy of Sciences report.Highlighted by 14 Kindle customers
The following fuels do beat gasoline in energy per pound: Natural gas is 1.3 times better Hydrogen gas or liquid is 2.6 times better Uranium or plutonium fission is 2 million times better Hydrogen fusion is 6 million times better Antimatter is 2 billion times betterHighlighted by 13 Kindle customers
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