NOVA Can Wind Turbines Make You Sick? Residents living in the shadows of wind turbines say the sound is making them sick. But so far the science isn't there. From NOVA Next | Jun 27, 2018 Thirty Years Ago Today, Global Warming First Made Headline News On June 23, a NASA climate scientist, James Hansen, told a U.S. From NOVA Next | Jun 23, 2018 New Middle Eastern Particle Accelerator’s Motto is “Science for Peace” In a region in turmoil, an unprecedented joint venture of scientists and policymakers is working together on Jordan’s new particle accelerator under the motto "science for peace." From NOVA Next | Jun 21, 2018 Psychological Damage Inflicted By Parent-Child Separation is Deep, Long-Lasting Here's what happens in the brain and the body when a child is forcibly separated from his or her parents.
Personal and Historical Perspectives of Hans Bethe the forgotten warp drive You’ve probably never heard of Burkhard Heim. Not many people have. After all, he was rather reclusive, all of his work was published in German and his brief moment in the spotlight was in 1957 when he proposed an odd propulsion system that could easily achieve relativistic speeds. Originally, Heim was trying to reconcile quantum mechanics with general relativity and created a universe with six dimensions in the formulas he used. How much energy would it take? While Drcher’s designs might not work and Heim’s ideas might be off in some critical places, this work can give us some interesting new directions in which to push the physics of warp drives.
19 Quotations Nikola Tesla Page, Tesla Coil (Bill Beaty's Homepage) T-SHIRTS! Hey, some people (not me) are selling Tesla t-shirts: CS Coil Tesla's Hair Tesla Co (purple plates) Cafe Press Classroom Tesla Coil $200, or a Handheld Tesla coil, $149.95, also a Micro Tesla Coil $4.95 OLD LINKS GONE BAD? Created and maintained by Bill Beaty. Space Exploration Technology: Space Exploration and Nuclear Propulsion Space Exploration –> Technology Contents IntroductionSpace Mission AnalysisLimitations of Chemical Rocket EnginesThe Advantage of Nuclear Propulsion SystemsSample Calculations for a Mars MissionWhat Progress Has Been Made in Space Nuclear Power and Propulsion?ConclusionsReferencesTable 1: Types of Propulsion SystemsTable 2: Mars Mission Comparison - Round TripFigure 1: Mass Ratio Dependence on Mission Delta-V and Specific ImpulseFigure 2: Schematic Diagram7 of a Solid Nuclear Thermal Rocket (NTR) Engine Introduction For those who are interested in the exploration and development of space by humans, nuclear propulsion technology is a very attractive option. Space Mission Analysis For any space mission, there are a few basic questions that must be answered: What is the destination? To convert the reactor heat into electricity, thermoelectric or thermionic devices could be used, but these have low efficiencies and low power to weight ratios. References Table 1: Types of Propulsion Systems
The SCP Foundation The most popular 20 TED Talks, as of now UPDATED: To see all these talks at one click, check out our updated Playlist: The 20 Most Popular Talks of All Time. As 2013 draws to a close, TED is deeply humbled to have posted 1600+ talks, each representing an idea worth spreading. So which ideas have had the most widespread impact? Below, a look at the 20 most-watched talks as of December 2013. These viewership numbers include all the platforms we track: TED.com, YouTube, iTunes, embed and download, Hulu and more. Some fascinating things to notice on this list, if you’d like to compare and contrast it to the most popular talks in 2012, and to the list we shared back in 2011: Amy Cuddy, Susan Cain, David Blaine and Pamela Meyer are all newcomers to the list, with Cuddy’s talk storming to spot #5 thanks to you sharing it. But what really makes this list so incredible is the fact that it spans so many areas of interest, from education to happiness, statistics to creativity, tech demos to illusions.
BuildTheEnterprise 120 Ways to Boost Your Brain Power Here are 120 things you can do starting today to help you think faster, improve memory, comprehend information better and unleash your brain’s full potential. Solve puzzles and brainteasers.Cultivate ambidexterity. Use your non-dominant hand to brush your teeth, comb your hair or use the mouse. Readers’ Contributions Dance! Contribute your own tip! There are many, many ways to keep our brains sharp.
How To Lucid Dream Tonight How To Lucid Dream Lucid Dreaming is the ability to be aware of your dreams, and control them. I know, I know: You want to know how to lucid dream right now, easily, don’t you? Lots of people do. You’re not alone! Before we go any further, this is going to be a fairly long post, so feel free to bookmark it if you want to come back to it later. So assuming you’re a beginner and don’t know much about the subject, Lucid Dreaming is basically the ability to ‘wake up’ in your mind and control your dream. To get more of a background on it, read our introduction. Now that that’s out of the way, we can start talking about the easy way to lucid dream tonight. So it’s about having one tonight, with as little practice as possible, for the people who want results fast. Will this be your first Lucid Dream? Something to consider before we dive in is whether this is your first lucid dream or not. If you’re looking for a way to lucid dream tonight and it’s your very first one, (how exciting!) *Almost. – Enjoy it!
Violent metaphors