Sharpest ever view of the Andromeda Galaxy. What is a person’s ‘legal sex?’ In law, as in biology, the components of sex don’t always line up.
Receive an email when new articles are posted on Please provide your email address to receive an email when new articles are posted on . We were unable to process your request. Please try again later. If you continue to have this issue please contact firstname.lastname@example.org. As an attorney who works with children with differences of sex development, I am often asked how the law determines a person’s sex. It comes as a surprise to many that there is no such thing as a “legal sex.” Could An Incompleteness In Quantum Mechanics Lead To Our Next Scientific Revolution? Brookhaven National Laboratory Sometimes, if you want to understand how nature truly works, you need to break things down to the simplest levels imaginable.
The macroscopic world is composed of particles that are — if you divide them until they can be divided no more — fundamental. Liquor before beer? You will still feel terrible, new study says. Hero Images | Getty Images “Beer before liquor, never been sicker; liquor before beer, you’re in the clear” is a well-worn phrase backing the belief that you can avoid a hangover if you take drinks in the “right” order.
But a new medical study has concluded that the threat of a crushing hangover cannot be removed by making sure that beer comes before, or after, wine. The study, published in the American Journal of Clinical Nutrition on Friday, went further claiming that hangovers were also not made more bearable by sticking to one type of drink thereby debunking another of the barfly’s favorite: “Grape or grain but never the twain.” The experiment broke up 90 people into three groups before the drinking began. Factors included size, age and gender.
What is a tensor? String Theory Explained: A Brief Overview for Starters. Along with sentience, dexterous hand, sharp brain, what comes with a human body is an inquisitive and overly curious mind which keeps figuring out the ideas behind everything around it.
The amazingly coordinated universe of ours is a source of awe for us and a fitting subject to study. We have come a long way from Aristotle’s fundamental element hypothesis to the prevalent Standard Model in our quest to unravel the secrets of the Universe. But the line of thoughts has been pretty linear all this time. The String Theory challenges the basic approach and presents us with a mind-blowing new perspective to see the reality. But first, let's see what makes String Theory revolutionary and so interesting. Why do objects with mass attract each other? NASA claims initial motion is key to ensuring a real-life WARP ENGINE is in drive not reverse A NASA engineer has claimed that getting a 'running start' would be the key to ensuring that a real-life, Star Trek-style warp engine is in drive, and not reverse.
In Albert Einstein's theory of special relativity, our Universe comes with a speed limit — with nothing able to travel faster than the speed of light. This would make space travel to most planets impractical in the scale of a human lifetime, if one was confined to relativistic speeds. However, a warp drive could — in theory — allow spacecraft to cheat their way around this rule, by moving parts of spacetime instead of the ship itself.
Q & A: Massless Particles Traveling at the Speed of Light. Hi Matt, In order to answer your first question, we have to introduce the relationship between energy, mass, and momentum in special relativity.
Most people are familiar with Einstein’s E=mc**2, where c is the speed of light. Are atoms expanding as the Universe expands? Asked by: Tony Karger, Norfolk The expansion of the Universe only significantly affects space and time on scales bigger even than entire clusters of galaxies.
Below this, the size of objects is dictated by far stronger influences, notably the force of electromagnetism in the case of atoms. Extremely sensitive measurements have found no evidence that the fundamental properties of atoms are anything other than constant. Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun science facts. Asked by: Tony Karger, Norfolk. The Unknown Universe – 10 questions still confounding cosmologists. 1.
How did it all begin? Cosmologists talk about the Big Bang, but they have no idea what it was. “We are sure that the early phase of the Universe was hot and dense,” says Prof Tim O’Brien, an astronomer from Jodrell Bank, University of Manchester. Space travel - What could possibly power an Alcubierre drive? It is important to note that you do not need negative mass for an Alcubierre drive to work, but negative mass density.
The difference is subtle, but important for actually being able to build a warp drive. Essentially what the equations say is that to bend space in the appropriate manner for a warp drive (i.e. to expand space behind your spacecraft and compress it in front), you need to be able to sum up all of the matter in a given portion of space and get something along the lines of "-10 kg / m3. " Space-time curvature is caused not simply by the mass of matter, but also by how compact it is in a given volume, and what we're trying to do with a warp drive is to curve space in a very specific way, so it doesn't matter what we're doing with the matter-energy in a given volume, so long as we can make its mass density appear to be negative.
The easiest way to do this is to just take a lump of matter that weighs -10 kg, and put it in your space. Physicists Say They've Created a Device That Generates 'Negative Mass' Why do objects with mass attract each other? What are neutron stars made of? Are octopuses smart? On Thursday morning, workers filing into the Santa Monica Pier Aquarium in California were surprised to find 200 gallons (750 liters) of seawater soaking into their spanking new, ecologically sensitive flooring.
It turns out that a curious two-spotted octopus had disassembled a water recycling valve and directed a tube to spew out of the tank for about 10 hours, according to the Los Angeles Times. "It found something loose and just pulled on it," the aquarium's education manager Tara Treiber told the Times. "They are very smart creatures.
" Octopuses, some 300 species of which inhabit tropical waters around the world, can change colors, squirt out poison, and exert a force greater than their own body weight. "Our universe would be destroyed": Inside the science of "Interstellar" In Interstellar, the gravitational anomalies excite Professor Brand for two reasons. If he can discover their cause, that may trigger a revolution in our understanding of gravity, a revolution as great as Einstein’s relativistic laws. More important: If he can figure out how to control the anomalies, that could enable NASA to lift large colonies of people off the dying Earth, and launch them toward a new home elsewhere in the universe. » Might gravity have mass? The accelerating expansion of the universe could be explained by modifying general relativity so that gravity has mass – or so thinks a small group of physicists.
Matthew Francis reports When confronted with something unexplained in the data, scientists face several possibilities. Maybe there’s an error and the result is spurious. Maybe there’s a more mundane explanation they simply overlooked. Brilliant GIF shows how Humans, Birds and Insects Breathe. Www.howtogeek. 5G, the next generation of cellular technology for the next generation of smartphones, is imminent. And with it, there’s concern about the health risk of this new, more powerful network. How worried should you be about the coming 5G healthpocalypse? By now, you may have seen articles on Facebook or alternative health websites. The gist: 5G is a dangerous escalation of traditional cellular technology, one packed with higher energy radiation that delivers potential damaging effects on human beings. Some 5G pundits contend that the new network generates radiofrequency radiation that can damage DNA and lead to cancer; cause oxidative damage that can cause premature aging; disrupt cell metabolism; and potentially lead to other diseases through the generation of stress proteins.
It sounds worrisome, but let’s take a look at the actual science. Why Can't Quantum Mechanics Explain Gravity? Paul Sutter is an astrophysicist at The Ohio State University and the chief scientist at COSI Science Center. Sutter is also host of the podcasts Ask a Spaceman and RealSpace, and the YouTube series Space In Your Face. Sutter contributed this article to Space.com's Expert Voices: Op-Ed & Insights. Quantizing gravity — and for the faint of heart, don't worry, we'll define what that means soon enough — can't be that hard, could it? I mean, we've got the other forces —electromagnetism, strong nuclear and weak nuclear — all quantized up like nobody's business. Why Quantize Gravity? Receive emails about upcoming NOVA programs and related content, as well as featured reporting about current events through a science lens.
Mars Colony: A City on Mars Could Descend Into Cabin Fever and Nationalism. In Amazon Prime show The Expanse, residents of Earth and Mars have formed such distinct identities and that they even declare war on each other. Why Can't Quantum Mechanics Explain Gravity? Plot explanation - How did the watch do what it did? - Movies & TV Stack Exchange. Shaking the dark matter paradigm. For millennia, humans held a beautiful belief. Inhaled Tree Nut Allergen. Your question is focusing on contact sensitivity or inhaled exposure in an individual who is tree nut allergic. Although it is difficult to make absolute statements, I am convinced by the available literature and clinical experience that there is no significant risk associated with a tree nut allergic person engaging in activities in close proximity to a tree, even with nuts on the ground around the tree.
Can gravity exist without matter? What Is Angular Momentum, Anyway? Former NASA scientist says they found life on Mars in the 1970s - CNN. Gilbert V. Does Dark Energy Exist? Einstein's General Relativity Could Rid Us of the Need for Universe's Most Mysterious Force. This article was originally published on The Conversation. University of Illinois at Urbana-Champaign. The United States at the LHC. The more we discover about nature, the more simple and elegant it becomes. In the 1860s, Maxell’s equations united magnetism and light, giving us electromagnetism.
Hubble bubble (astronomy) The downside of warp drives: Annihilating whole star systems when you arrive. This site may earn affiliate commissions from the links on this page. How to Get to the Fourth Dimension. Permanent Magnet. Difference Between Magnetism and Electromagnetism. Do galaxies that are receding from us faster than the speed of light disappear from our observations? (Intermediate) - Curious About Astronomy? Ask an Astronomer.
B-cells. How Do We Terraform Venus? Google claims it reached “quantum supremacy.” What the heck does that mean? - Vox. Miguel Alcubierre’s Warp Antrieb. Habitable planets around red dwarf stars might not get enough photons to support plant life. NASA engineer's 'helical engine' may violate the laws of physics. A slightly serious habitability ranking of TRAPPIST-1's planets. Which Habitable Zones are the Best to Actually Search for Life? Davis STAIF conference 2. Miguel Alcubierre’s Warp Antrieb. Word for increasing acceleration. Calculate Your Age on other Planets. Here's What Earth Might Look Like In 100 Years – If We're Lucky. Hawking radiation. NPR Choice page. Torus – Exo News. Harold White warp drive experiment.
IXS Enterprise. How close to a viable warp drive are we? How close to a viable warp drive are we? NASA is Working on a Real-Life Star Trek Warp Drive. Icists create 'negative mass' Real World Examples of Quadratic Equations. Ask Ethan: Why Must Time Be A Dimension? Finally: Missing Link Between Vitamin D and Prostate Cancer Discovered. What is the difference between quantum physics and particle physics? IQ, explained in 9 charts. What does it mean for string theory that the LHC has not seen supersymmetric particles?
How the LHC may spell the end of particle physics. Why some scientists say physics has gone off the rails. Why Supersymmetry May Be The Greatest Failed Prediction In Particle Physics History. Exclusive: This Wild Paper Suggests Gravity Is Just a Product of Quantum Mechanics. Warp Drive Sketch. Space Isn’t What You Think It Is. Particles of the Standard Model. Physicists probe the fifth dimension - Technology & science - Science - Mysteries of the Universe. Twisting neutrons: Orbital angular momentum of neutron waves can be controlled. Solution To Dark Matter Proposes That Gravity Is An Illusion. Dark energy may not exist. Difference Between Magnetism and Electromagnetism. Permanent Magnet. How to Get to the Fourth Dimension.
The downside of warp drives: Annihilating whole star systems when you arrive. Hubble bubble (astronomy) Kaluza-Klein Theory. The Concept of Negative Energy in Physics Simplified for You. What is the relation between electrons, photons and electromagnetism? : askscience. Four-dimensional space. A Nation Divided: Arid/Humid Climate Boundary in U.S. Creeps Eastward.
Scientists can now simulate curved space-time in a lab. Does electromagnetism affect space-time? Relativistic angular momentum. What is an Interferometer? World's most powerful laser to tear apart the vacuum of space. Laser beams have gravity and can warp the fabric of the universe. Warp Drive More Possible Than Thought, Scientists Say. Has NASA Really Created A Warp Drive? Guessing the year you were born from baby names using R.