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LIQUID-FUEL ROCKET ENGINES LIQUID-FUEL ROCKET ENGINES HOW to DESIGN, BUILD and TEST SMALL LIQUID-FUEL ROCKET ENGINES Reprinted with permission. ROCKETLAB cannot assume responsibility, in any manner whatsoever, for the use readers make of the information presented herein or the device resulting therefrom. MIT, LCS, and the volunteers who have made this information available on the W3 likewise disclaim all responibility for whatever use readers make of this information.
In order to sharpen our reasoning skills, we must have a good grasp of our own cognitive biases, as well as the basic laws of the universe. But in a dynamic world, new laws are constantly emerging. The editors over at Edge.org asked some of the most influential thinkers in the world — including neuroscientists, physicists and mathematicians — what they believe are the most important scientific concepts of the modern era. The result is "This Will Make You Smarter: New Scientific Concepts To Improve Your Thinking," a compilation of nearly 200 essays exploring concepts such as the "shifting baseline syndrome" and a scientific view of "randomness." 35 Scientific Concepts That Will Help You Understand The World, by Aimee Groth 35 Scientific Concepts That Will Help You Understand The World, by Aimee Groth
Gates Puts Feynman Lectures Online MicrosoftThe new Tuva Web site features annotated videos of Richard Feynman’s physics lectures. Microsoft Chairman Bill Gates believes that if he had been able to watch physicist Richard Feynman lecture on physics in 1964 his life might have played out differently. Mr. Gates, of course, is legendary as a Harvard University dropout who went on to create the world’s most successful software firm. He has told associates that if had watched the lectures earlier in his life he might have become a physicist instead of a software entrepreneur. Gates Puts Feynman Lectures Online
Tongue controller for the paralyzed offers greater independence Tongue controller for the paralyzed offers greater independence NEW YORK (Reuters) - From fashion statement to ... wheelchair controller? In an advance that promises to improve the lives of the more than 250,000 people in the United States who are paralyzed from the neck down, researchers announced on Wednesday that they have developed a wireless device that operates specially rigged chairs by means of a tiny titanium barbell pierced through the tongue. Merely by moving their tongues left or right across their mouths, essentially using it as a joystick, paralyzed patients have been able to move their motorized wheelchairs, as well as computer cursors. Tapping tongue against cheek, quickly or slowly, controls the chair's speed. The advance "is more than just a wheelchair control," said Jason Disanto, 39, who has been paralyzed from the neck down since a 2009 diving accident and tested the device.
25 Documentaries Everybody Should Watch 25 Documentaries Everybody Should Watch Sans Soleil This is not your average documentary. It is a fleeting memory, a sudden remembrance of times long past, a meditation on time and culture, a touch of an emotional diary. We follow the eyes of a world traveller who makes sharp observations and tries to convey them to his friend. We never learn who they are and where they came from, and this is perhaps a subtle point the documentary wants to make. The narrator’s voice switches from Japanese to German to English to French, thereby embodying the language of the places visited.
Must Watch: An Out-of-Character Stephen Colbert Interviews Neil deGrasse Tyson Must Watch: An Out-of-Character Stephen Colbert Interviews Neil deGrasse Tyson While I believe in God, I do not ignore the value and contribution that science makes. People often confuse the two as separate and nothing could be further from the truth. Having said that, the question of morality, and the Tree of Knowledge of Good and Evil are exactly the lesson that God was teaching. Tyson eluded that we need better moral management, while God on the other hand was warning us that we do not have the capacity to do so on our own. This tree did no way mean moral ability and insight! If so, Adam and Eve wouldn´t even KNOW it was wrong to eat, thus God wouldn´t have punished them.
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We hate to open too negatively here, but let's just say that this seems like one of those ideas that's just too good to be true. But heck, much stranger things have happened in the world of consumer electronics, and certainly the maker and crowdfunding communities have gone a ways toward helping us rethink our devices. What about a smartphone that could score a 10 every time iFixit teared it down? Phonebloks: a utopian world where smartphones are a bit more like Lego Phonebloks: a utopian world where smartphones are a bit more like Lego
Phonebloks: a utopian world where smartphones are a bit more like Lego
See What Happens When a Squid Listens to Cypress Hill Ever wonder what a squid listening to Cypress Hill’s Insane in the Brain looks like? Fascinated by the fast color-changing nature of the squid’s skin and their ability to quickly control pigmented cells called chromatophores, the folks at Backyard Brains wondered what exactly would happen if they played music to a squid. In order to satisfy their curiosity they attached a suction electrode to the squid’s fin nerve and then connected the electrode to an iPod nano as their stimulator. The results are incredible. See What Happens When a Squid Listens to Cypress Hill
Scientists engineer suicide bomber bacteria to kill other bacteria : Not Exactly Rocket Science Scientists engineer suicide bomber bacteria to kill other bacteria : Not Exactly Rocket Science In a lab in Singapore, scientists are designing and breeding suicide bombers. If their efforts pan out, they will be applauded rather than jailed, for their targets are neither humans nor buildings. They’re bacteria.
The Effects of Marijuana on Consciousness From: Altered States of Consciousness, edited by Charles T. Tart, Doubleday & Co., 1972, Chapter 22 A marijuana high usually lasts two or three hours, during which a wide range of effects may occur, varying both in intensity and quality. The usual, most noticeable effect is intensification of sensation and increased clarity of perception. Visually, colors are brighter, scenes have more depth, patterns are more evident, and figure-ground relations both more distinct and more easily reversible.
What is it about the human body that entices our curiosity, daring us to try to understand and control it? Religion, government, science, business, artists... hell, even aliens are all rumored and reputed to have poked and probed their way into our bodies. Since the Dawn of Man we have searched for a soul or even a source code, hoping to hack into the human being with myths and metaphors; magic and medicine; law and language; totems and tools; barcodes and biotech; nanotech and even numbers. SniffCode.com : Hacking into the Human
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Learn to Pick Locks for Fun and an Increased Understanding of Security If your file is that cheap, you need a better file. As for worrying about your file, I'd worry more about what the bump key will do to the lock you're trying to open.. They can really do some damage in the hands of the wrong person.. Hacksaw blade was already suggested so I'll give it a +1. For car locks, I was at a garage sale in Anchorage many moons ago and everything was on the floor of the garage, dang near walked by a complete lockpick set for cars and truck, including the book.
New Model of the Universe Says Past Crystallizes out of the Future What’s the difference between the past and the future? Not a great deal, if you take a purely relativistic view of the universe, say George Ellis from the University of Cape Town in South Africa and Tony Rothman from Princeton University in New Jersey. The standard spacetime diagrams used in relativity accord no special status to the past, the present or the future. That’s because they assume that everything evolves from time-reversible local physics.
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