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Beilstein Journal of Organic Chemistry - Latest Articles. Faculty.txwes.edu/ppelphrey/course2/documents/Resonance_000.pdf. 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. This document is provided on a strictly informational basis. You can now download this entire book as a tarball (rocket.tar.gz) or as a zipfile (rocket.zip). Copyright 1967 by Leroy J. 35 Scientific Concepts That Will Help You Understand The World, by Aimee Groth. 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. " We've highlighted 35 of the concepts here, crediting the author whose essay highlights the theory. Cognitive humility Decades of cognitive research shows that "our minds are finite and far from noble. Cognitive load Our brains can only hold so much information at once.

Constraint satisfaction Contingent superorganisms Copernican principle Cumulative error. 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. However, Mr. Gates, who is also well known for his sharp and varied intellectual interests and his philanthropic commitment to education, said this week that he had purchased the rights to videos of seven lectures that Dr.

Microsoft Research announced on Wednesday that Mr. The name “Tuva” was chosen in reference to Dr. Mr. The Tuva Web site will be expanded with additional Feynman lectures in the future, Mr. Mr. Tongue controller for the paralyzed offers greater independence. 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.

By observing the cultural kaleidoscope of our planet, the eye we follow seems to shape shift its way around and conveys to us, the viewer, that ‘what life is’ depends on where and when you are. Sit down, cover yourself in a blanket and sip on a hot cup of coca and join the collaborative dream called Sans Soleil. The Corporation Corporate personhood is probably the elephant in the room when it comes politics. Cosmos: A Personal Voyage The Century of the Self. Must Watch: An Out-of-Character Stephen Colbert Interviews Neil deGrasse Tyson. Encyclopedia of Life - Animals - Plants - Pictures & Information. 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. I’m not going to attempt to explain to you how this works, but you can see an in-depth explanation on TED. For now, watch the video below and be amazed. Share With Your Friends. Scientists engineer suicide bomber bacteria to kill other bacteria. 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. Nazanin Saeidi and Choon Kit Wong have found a new way of killing Pseudomonas aeruginosa, an opportunistic species that thrives wherever humans are weak. It commonly infects hospital patients whose immune systems have taken a hit. It targets any tissue it can get a foothold on – lungs, bladders, guts – and it often causes fatal infections. Their E.coli recruits produce a protein called LasR, which recognises molecules that P.aeruginosa cells use to communicate with one another.

The beauty of this solution is that it uses P.aeurginosa’s own weapons against it. In preliminary lab tests, the E.coli bombers proved to be remarkably effective against P.aeruginosa. Of course, Saeidi and Wong’s method is a long way from actual clinical use. 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. Other sense modalities do not have the variety of visual stimuli, but all seem to be intensified. Sounds become more distinct, with the user aware of sounds he otherwise might not have noticed. Skin receptors are also effected. Awareness of proprioceptive responses is enhanced. Such effects vary with the individual and the situation. The person himself is the most important determinant of how the enhancement will appear. The user's internal psychological needs will also influence his response. SniffCode.com : Hacking into the Human. Untitled. Learn to Pick Locks for Fun and an Increased Understanding of Security.

New Model of the Universe Says Past Crystallizes out of the Future. Murphy. Murphy's Law Calculator. Murphy's Law Calculator From a formula for * Sod's Law provided by British Gas: ((U+C+I) x (10-S))/20 x A x 1/(1-sin(F/10)) "anything that can go wrong, will go wrong! " Find out in advance whether you will be able to successfully repair your VCR, get to a meeting on time, impress your date, or be a success at any activity whatsoever !

Score: 4.355 Risk Factor: 35286.9 You have a 43% chance of screwing this up ! You can minimize your risk by having a backup plan (redundant circuitry, alternate route etc.) British Gas commissioned Dr David Lewis, a chartered psychologist; Dr Keylan Leyser, an economist and business consultant; and Philip Obadya, a mathematician, to devise the formula. Murphy's Law Links: Note: Murphy's Law has long been known in the UK as "Sod's Law". Casebook: Jack the Ripper - Main. Science news and science jobs from New Scientist.

How to Forecast Weather | Ever wondered how to forecast the weather without actually using instruments? Check the Clouds: Clouds can tell us a lot about the weather. For example, they can tell us if it’s going to be warmer on a particular night by simply being there. That’s because they prevent heat radiation from escaping. They can also tell you whether there will be rain and whether there will be bad weather in general (when you see clouds moving in opposite directions of each other). Check the Humidity: If you’re one of those people whose hair gets all curly when it gets really humid out, you know exactly what this is about.

Check the Animals: Birds only fly in the sky when they expect fair weather ahead. Look at the Rainbow (but only in the west) and look for a Red Sky: If you see one in the west, it means a major storm front is coming. Check the Air: If it smells like a compost heap, expect some rain soon. Check the Moon: Seen any red moons lately? Check the Wind: A Few More Ideas: ScienceWorld. Home page | Some paradoxes - an anthology. Greatest Hits of TED Videos.

Hack Your Own Super Fridge. How to turn "water" into marbles. Stolen Camera Finder - find your photos, find your camera. Make your own Airsoft machine gun with a soda bottle. Would you like to own an Airsoft gun, but can’t afford to buy one? How about making one instead using a soda bottle? Better yet, how about making a machine gun that only requires 4 cheap and commonly available parts that’s capable of firing hundreds Airsoft BBs before a reload is required? The informative video below shows you exactly how to do that for around $15.

The parts you’ll need include a plastic soda bottle, a quick release air compressor adaptor, an air compressor blowgun, and a 7mm by 6-inch brake line. The other thing you will need is a compressed air supply. In the video he uses an air compressor attached via a line. However, you can swap that out for a portable air supply which could be mounted in a backup. The instructions make this look simple to do. Any concerns over the pressure inside the bottle are laid to rest in the comments on the YouTube video. Plastic-eating fungus could help deal with landfill. A team from Yale University has discovered a fungus deep in the South American rainforest that can live entirely on plastic - offering hope for new methods of waste disposal. Pestalotiopsis microspora, found in the jungles of Ecuador, can digest polyurethane - which often currently ends up in landfill and takes generations to decay.

Burning polyurethane releases toxins as well as carbon dioxide; and, while it can be recycled, it frequently isn't. The fungus can live entirely on polyurethane. And, most intriguingly, the fungus can break down polyeurethane even without the presence of oxygen, meaning it could do its trick even at the bottom of a landfill site. The fungus was discovered on the university's annual Rainforest Expedition last year. It's one of several that the team found could brak down polyeurethane, but was the only one to manage this without oxygen. Jonathan Russell has isolated the enzyme that the fungus uses to degrade the polyeurethane, a serine hydrolase. Fracture Putty can heal a broken bone in days. Broken bones can mean weeks of having to wear a cast and the muscle atrophy that comes with that. More severe breaks can take months to mend, result in restricted movement, or in the worst cases the possible loss of a limb.

There’s also the chance of re-fracture due to the amount of time some breaks take to heal if a patient isn’t extremely careful. Speeding up the time it takes to heal a broken bone is highly desirable, and a solution may be on the horizon. Research being carried out at the University of Georgia Regenerative Bioscience Center has helped create a new gel being referred to as Fracture Putty. Fracture Putty has yet to be tested on humans, but it has already been proven to work in animals. The key to Fracture Putty is the use of mesenchymal stem cells that produce a protein key to bone generation.

The time it takes to heal depends on the severity of the fracture, but in all cases it should speed up the process. Read more at MedicalXpress. Scirus - for scientific information. Psilocybin, the Drug in 'Magic Mushrooms,' Lifts Mood and Increases Compassion Over the Long Term. The psychedelic drug in magic mushrooms may have lasting medical and spiritual benefits, according to new research from Johns Hopkins School of Medicine. The mushroom-derived hallucinogen, called psilocybin, is known to trigger transformative spiritual states, but at high doses it can also result in “bad trips” marked by terror and panic.

The trick is to get the dose just right, which the Johns Hopkins researchers report having accomplished. In their study, the Hopkins scientists were able to reliably induce transcendental experiences in volunteers, which offered long-lasting psychological growth and helped people find peace in their lives — without the negative effects. (PHOTOS: Inside Colorado’s Marijuana Industry) “The important point here is that we found the sweet spot where we can optimize the positive persistent effects and avoid some of the fear and anxiety that can occur and can be quite disruptive,” says lead author Roland Griffiths, professor of behavioral biology at Hopkins. Michio Kaku | Professor of Theoretical Physics, CUNY. Most Popular Repurposing Tricks of 2011. Top Sites To Find All The Serials You Need |Hack Tricks.

Forked from: [BetweenAS3]uzumaki. 10 Search Engines to Explore the Invisible Web. Not everything on the web will show up in a list of search results on Google or Bing; there are lots of places that their web crawlers cannot access. To explore the invisible web, you need to use specialist search engines. Here are our top 12 services to perform a deep internet search. What Is the Invisible Web? Before we begin, let's establish what does the term "invisible web" refer to? Simply, it's a catch-all term for online content that will not appear in search results or web directories.

There are no official data available, but most experts agree that the invisible web is several times larger than the visible web. The content on the invisible web can be roughly divided into the deep web and the dark web. The Deep Web The deep web made up of content that typically needs some form of accreditation to access. If you have the correct details, you can access the content through a regular web browser. The Dark Web The dark web is a sub-section of the deep web. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 5 Ways To Hack Your Brain Into Awesomeness. #3038363. Kurzweil Accelerating Intelligence.