background preloader

MIT's artificial leaf is ten times more efficient than the real thing

MIT's artificial leaf is ten times more efficient than the real thing
Speaking at the National Meeting of the American Chemical Society in California, MIT professor Daniel Nocera claims to have created an artificial leaf, made from stable and inexpensive materials, which mimics nature's photosynthesis process. The device is an advanced solar cell, no bigger than a typical playing card, which is left floating in a pool of water. Then, much like a natural leaf, it uses sunlight to split the water into its two core components, oxygen and hydrogen, which are stored in a fuel cell to be used when producing electricity. Nocera's leaf is stable -- operating continuously for at least 45 hours without a drop in activity in preliminary tests -- and made of widely available, inexpensive materials -- like silicon, electronics and chemical catalysts. With a single gallon of water, Nocera says, the chip could produce enough electricity to power a house in a developing country for an entire day. This isn't the first ever artificial leaf, of course.

ENFJ Profile Extraverted iNtuitive Feeling Judging by Joe Butt Profile: ENFJ Revision: 3.0 Date of Revision: 23 Feb 2005 ENFJs are the benevolent 'pedagogues' of humanity. They have tremendous charisma by which many are drawn into their nurturant tutelage and/or grand schemes. ENFJs are global learners. ENFJs are, by definition, Js, with whom we associate organization and decisiveness. ENFJs know and appreciate people. TRADEMARK: "The first shall be last" This refers to the open-door policy of ENFJs. Functional Analysis: Extraverted Feeling Extraverted Feeling rules the ENFJ's psyche. Introverted iNtuition Like their INFJ cousins, ENFJs are blessed through introverted intuition with clarity of perception in the inner, unconscious world. The dynamic nature of their intuition moves ENFJs from one project to another with the assurance that the next one will be perfect, or much more nearly so than the last. Extraverted Sensing Sensing is extraverted. Introverted Thinking Famous ENFJs: Fictional ENFJs:

1ℓimit – Faucet Design by Yonggu Do, Dohyung Kim & Sewon Oh One Liter Limited 1ℓimit faucet looks more like an elegant test tube inverted on top of a tap. The glass tube holds exactly one liter of water, sufficient for a quick handwash. Ten Ways to Find Free Textbooks Online Going to university is expensive, and textbooks can make the bill go even higher. However, you don't have to break the bank to finance a good education; there are plenty of places on the Web where you can find and download free online books for nearly any class available. Here are ten sources on the Web you can use to find free content for many college classes, all freely available to either download and print offline or view online in your browser. 1. The first place to start when looking for a textbook is Google, using the filetype command. filetype:pdf "history of anthropology" If you don't have any luck with the book's title, try the author (again, surrounded by quotes), or, you can also look for another type of file: PowerPoint (ppt), Word (doc), etc. 2. Open Culture, a fascinating repository of some of the best content on the Web, has assembled an ongoing database of free texts ranging in subject from Biology to Physics. 3. 4. 5. 6. 7. 8. 9. 10.

50 Life Secrets and Tips Memorize something everyday.Not only will this leave your brain sharp and your memory functioning, you will also have a huge library of quotes to bust out at any moment. Poetry, sayings and philosophies are your best options.Constantly try to reduce your attachment to possessions.Those who are heavy-set with material desires will have a lot of trouble when their things are taken away from them or lost. Possessions do end up owning you, not the other way around. Read “Zen and the Art of Happiness” by Chris Prentiss.This book will give you the knowledge and instruction to be happy at all times regardless of the circumstances.

Hemp Foods Australia | HempSeeds, Buy Hemp Seeds, Hemp Oil 10 Inexpensive Activities and Games Money is tight anymore. Between a recession that we are all tired of hearing about, low amounts of jobs and high unemployment, we should all be saving our money. But we are going to be equally, if not more, bored when we are poor as we are when we have enough money to spare for luxuries and hobbies. You may not have enough money for the Nintendo Wii, you may be a few dollars short to go to the theatre and see a movie, maybe you are using most of your paycheck to fill up your car, so you can go to work, so you can get a paycheck that is just enough to fill up your car for the commute to work. So what is there to do that is fun, but very cheap? Well, at least ten things. Most of us have at one time seen the flamboyantly colored guns that fire the harmless foam darts with suction cups for tips. After you obtain your new blaster, try Capture the Flag, Elimination, King of the Hill, and many more game variants. Two teams occupy one half of the playing area each. A catalyst can be anything.

Natural photosynthesis is so ancient that it cannot distinguish between carbon dioxide and oxygen - hence the low efficiency. by pauljacobson May 12

The end of the Age of Burning? It is coming! Of course, Nocera's work is focussed on a hydrogen & oxygen economy - different in quality from the water-based economy of electricity and oxygen that will be the ultimate solution. Check it out in my New Energy Pearltree. by pauljacobson Apr 1