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100 Incredible Lectures from the World's Top Scientists. Posted on Thursday June 18, 2009 by Staff Writers By Sarah Russel Unless you’re enrolled at one of the best online colleges or are an elite member of the science and engineering inner circle, you’re probably left out of most of the exciting research explored by the world’s greatest scientists.

100 Incredible Lectures from the World's Top Scientists

But thanks to the Internet and the generosity of many universities and online colleges, you’ve now got access to the cutting edge theories and projects that are changing the world in this list below. If you’re looking for even more amazing lectures, check out our updated list for 2012 with more talks from great minds. General Let the world’s top scientists explain exactly how they do their job when you listen to these lectures. Science and Engineering From materials science to the study of thermodynamics, learn more about the science of engineering here.

WTC Lecture – collapse of WTC Buildings: Steven E. Biology and Medicine Chemistry Physics and Astronomy Earth and Environment Technology Science and Business. 64 Things Every Geek Should Know - laptoplogic.com. The term ‘geek’, once used to label a circus freak, has morphed in meaning over the years. What was once an unusual profession transferred into a word indicating social awkwardness. As time has gone on, the word has yet again morphed to indicate a new type of individual: someone who is obsessive over one (or more) particular subjects, whether it be science, photography, electronics, computers, media, or any other field. A geek is one who isn’t satisfied knowing only the surface facts, but instead has a visceral desire to learn everything possible about a particular subject. A techie geek is usually one who knows a little about everything, and is thus the person family and friends turn to whenever they have a question.

If you’re that type of person and are looking for a few extra skills to pick up, or if you’re a newbie aiming to get a handhold on the honor that is geekhood, read on to find out what skills you need to know. 1. USB – Universal Serial Bus GPU – Graphics Processing Unit. Download Graphic Images from the Hillis/Bull Lab. Return to "Download Files" Page You are welcome to download the following graphic image of the Tree of Life for non-commercial, educational purposes: Tree of Life (~3,000 species, based on rRNA sequences) (pdf, 368 KB) (see Science, 2003, 300:1692-1697) This file can be printed as a wall poster.

Download Graphic Images from the Hillis/Bull Lab

Printing at least 54" wide is recommended. Lectures. Awesome milk trick!. Gallium spoon melting on Small Flicks. Cool Chemical Volcano on Small Flicks. Fuck Yeah Fluid Dynamics. 11 cheap gifts guaranteed to impress science geeks. Science comes up with a lot of awesome stuff, and you don't need a Ph.D, a secret lab, or government funding to get your hands on some of the coolest discoveries.

11 cheap gifts guaranteed to impress science geeks

We've got a list of 11 mostly affordable gifts that are guaranteed to blow your mind, whether or not you're a science geek. Click on any image to see it enlarged. 1. Aerogel Also known as frozen smoke, Aerogel is the world's lowest density solid, clocking in at 96% air. Aerogel isn't just neat, it's useful. Price: $35 2. Inside these sealed glass balls live shrimp, algae, and bacteria, all swimming around in filtered seawater. EcoSpheres came out of research looking at ways to develop self-contained ecosystems for long duration space travel. Price: $80 3. NASA has been trying to figure out how to get a sample of rock back from Mars for a while now. Every once in a while, a meteorite smashes into Mars hard enough to eject some rocks out into orbit around the sun.

Price: $70+ 4. Price: $150 5. Price: $110 6. Price: $80. Up and Down the Ladder of Abstraction. In real life, you would never use a ladder that only let you go up.

Up and Down the Ladder of Abstraction

Likewise, when creating abstractions, stepping down is as important as stepping up. Here, we take the abstraction from the previous section, and overlay a concrete representation on top of it. That is, we draw the trajectory that represents all time, but we also draw the car at some particular time. How do we select which particular time to show? We could use the slider, which has reappeared. This is a general and powerful technique. Try cranking up the turning rate to 8° or so, and then inspecting the car's behavior as it makes its first two turns. In this case, it's fairly easy to look at the trajectory and imagine the car moving along. Interactive 3D model of Solar System Planets and Night Sky - StumbleUpon.