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James Linzel

A Peek Into The Astonishing Future Of Wind Power | ThinkProgress - 0 views

thinkprogress.org/...future-of-wind-power

shared by James Linzel on 15 Mar 14 - No Cached
  • China is seeing significant growth, as well, adding 14 GW to grid-connected wind power capacity in 2013, the fifth consecutive year with installations totaling over 10 GW, and an additional 56 GW of wind has already been permitted.
James Linzel

Ask Ethan: Why Don't We Shoot Earth's Garbage Into The Sun? - 0 views

www.forbes.com/...ot-earths-garbage-into-the-sun

shared by James Linzel on 06 Oct 16 - No Cached
  • there’s a certain amount of energy keeping us bound to our world (gravitational potential energy)
    • James Linzel
      James Linzel on 06 Oct 16
       
      Ep=mass x Acc-g x distance
  • For Earth, we’d have to move at about 7.9 km/s (17,700 mph) to attain orbit and at about 11.2 km/s (25,000 mph) to escape from Earth’s gravity.
  • Earth moves around the Sun at approximately 30 km/s (67,000 mph)
  • ...4 more annotations...
  • If we wanted to escape from the Solar System completely, we’d only have to gain another 12 km/s of speed (for a total of 42 km/s) to get out of here!
  • There are two ways a spacecraft can take advantage of a gravity assist: To fly the spacecraft so that it comes from behind a planet, flies in front of it and gets gravitationally sling-shotted back behind the planet again. To fly the spacecraft so that it comes from ahead of a planet’s orbit, flies behind it and gets gravitationally sling-shotted back in front of the planet again.
  • There are two ways a spacecraft can take advantage of a gravity assist: To fly the spacecraft so that it comes from behind a planet, flies in front of it and gets gravitationally sling-shotted back behind the planet again. To fly the spacecraft so that it comes from ahead of a planet’s orbit, flies behind it and gets gravitationally sling-shotted back in front of the planet again.
  • in the first case, the planet tugs on the spacecraft and the spacecraft tugs on the planet in such a way that the planet winds up gaining a little bit of speed with respect to the Sun, becoming slightly more loosely bound, while the spacecraft loses quite a bit of speed (thanks to its much smaller mass), and becomes more tightly bound: transferring to a lower-energy orbit. The second case works the opposite way: the planet loses a little speed and becomes more tightly bound, while the spacecraft gains quite a lot of speed and transfers to a higher-energy orbit.
Jason Dillon

Germany, the Green Superpower - NYTimes.com - 1 views

www.nytimes.com/...many-the-green-superpower.html

shared by Jason Dillon on 07 May 15 - No Cached
  • what the Germans have done in converting almost 30 percent of their electric grid to solar and wind energy from near zero in about 15 years has been a great contribution to the stability of our planet and its climate.
  • “In my view the greatest success of the German energy transition was giving a boost to the Chinese solar panel industry,” said Ralf Fücks, the president of the Heinrich-Böll-Stiftung, the German Green Party’s political foundation. “We created the mass market, and that led to the increased productivity and dramatic decrease in cost.”
  • A German foreign policy official put their dilemma this way: “We have to get used to assuming more leadership and be aware of how reluctant others are to have Germany lead — so we have to do it through the E.U.”Here’s my prediction: Germany will be Europe’s first green, solar-powered superpower. Can those attributes coexist in one country, you ask? They’re going to have to. 
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