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dpurdy

Hydrogen vehicle - Wikipedia, the free encyclopedia - 13 views

en.wikipedia.org/...Hydrogen_vehicle

hydrogen what form infrastructure current

shared by dpurdy on 19 Mar 12 - Cached
    • dpurdy
      dpurdy on 19 Mar 12
       
      Is hydrogen sustainable? depends on the source. see this highlight.
  • While methods of hydrogen production that do not use fossil fuel would be more sustainable
  • The challenges facing the use of hydrogen in vehicles include production, storage, transport and distribution.
  • ...3 more annotations...
  • The hydrogen infrastructure consists mainly of industrial hydrogen pipeline transport and hydrogen-equipped filling stations like those found on a hydrogen highway. Hydrogen stations which are not situated near a hydrogen pipeline can obtain supply via hydrogen tanks, compressed hydrogen tube trailers, liquid hydrogen tank trucks or dedicated onsite production.
  • Hydrogen use would require the alteration of industry and transport on a scale never seen before in history. For example, according to GM, 70% of the U.S. population lives near a hydrogen-generating facility but has little access to hydrogen, despite its wide availability for commercial use.[64] The distribution of hydrogen fuel for vehicles throughout the U.S. would require new hydrogen stations that would cost, by some estimates approximately 20 billion dollars[65] and 4.6 billion in the EU.[66] Other estimates place the cost as high as half trillion dollars in the United States alone.[67]
  • Hydrogen fuel does not occur naturally on Earth and thus is not an energy source, but is an energy carrier. Currently it is most frequently made from methane or other fossil fuels. However, it can be produced from a wide range of sources (such as wind, solar, or nuclear) that are intermittent, too diffuse or too cumbersome to directly propel vehicles. Integrated wind-to-hydrogen plants, using electrolysis of water, are exploring technologies to deliver costs low enough, and quantities great enough, to compete with traditional energy sources.[2]
  • dpurdy on 19 Mar 12
     
    Fuel cell cars are expensive.  The fuel cell costs a lot
Marc Patton

Utah 3D panoramic pictures - 35 views

www.utah3d.net

Fun!

shared by Marc Patton on 14 Aug 12 - Cached
  • Marc Patton on 14 Aug 12
     
    Martin van Hemert is a photographer based in Utah. He is actively involved in architectural, product, and fine art photography. Throughout his career, he has consistently been drawn to more labor intensive forms of the art, from baking films in hydrogen for astronomical photography, to long exposures and light painting of outdoor scenes photographed on 4×5 sheet films, to his current obsession with spherical panoramas. Born to a family of Dutch immigrants, he studied music at the University of Utah, following which he made the logical choice of a career in photography. Martin and his wife are the parents of three grown children and one un-grown grandchild, and live in rural Utah County with a small herd of horses. Their rodent control staff boasts 7 members.
Deborah Batzer

The Comic Book Periodic Table of the Elements - 177 views

www.uky.edu/Chemcomics

diigo chemistry science comics elements periodic periodictable

shared by Deborah Batzer on 29 Oct 09 - Cached
  • Deborah Batzer on 29 Oct 09
     
    This site contains comic book images linked to the chemical elements via the periodic table. Comics include Uncle $crooge, Metal Men, Metamorpho, Batman, Fantastic Four, Superman, and many more."> The Comic Book Periodic Table of the Elements BODY { color: rgb(0,0,0);} Th
Holly Barlaam

Biological Animations - 159 views

www.stolaf.edu/...biological%20anamations.html

biology animations

shared by Holly Barlaam on 27 Apr 11 - Cached
  • Holly Barlaam on 27 Apr 11
     
    simple, easy to understand biology animations covering many topics such as hydrogen bonding between water molecules, the fluidity of the cell membrane, protein folding, channels used in membrane transport (gated versus non-gated), motor proteins, and much more
Jude Kesl

Build an Atom - 116 views

www.keithcom.com/index.php

atoms models

shared by Jude Kesl on 02 Aug 11 - Cached
  • Martin Burrett on 02 Aug 11
     
    This webpage allows students to view the structure of atoms from simple hydrogen and Helium all the way up to the complex Ununoctium. http://ictmagic.wikispaces.com/science
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