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It’s even the title of a Mariah Carey album. But what does Albert Einstein’s famous equation really mean? For starters, the E stands for energy and the m stands for mass , a measurement of the quantity of matter. Energy and matter are interchangeable. If you’ve ever read Dr. Seuss’s children’s book “The Sneetches,” you probably remember how the yellow, birdlike characters in the story go through a machine to change back and forth between “star-bellied sneetches” and “plain-bellied sneetches. It’s the same way with energy and matter. The grand total remains constant, but energy regularly changes form into matter and matter into energy. Why would you need to multiply matter by the speed of light to produce energy?

Albert Einstein’s watch by Longines

This reprints an essay written ca. I f you have read Edgar Allen Poe’s “The Murders in the Rue Morgue,” perhaps you remember the epigraph that Poe chose for this pioneer detective story:. What song the Syrens sang, or what name Achilles assumed when he hid himself among women, though puzzling questions, are not beyond all conjecture.

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Have you ever walked out of a movie theater and said to your companion, “Wow, the science in that film was awesome? You might think, here, of Jodie Foster searching for extraterrestrial intelligence in the now-classic movie Contact. Or, more recently, Matt Damon sciencing his way out of trouble when stranded in The Martian , or the smart linguist-and-theoretical physicist team played by Amy Adams and Jeremy Renner working to communicate with heptapods in Arrival. We can each probably name a favorite.

I’m pretty sure for my Can you come up with a stinker , too — a movie that got the science so wrong it was just laughable? Last week, I participated, along with six other scientists, in a “science speed-dating” event put on by the Exchange that was meant to increase the accuracy of science representation on big and little screens. We scientists had seven minutes to explain the basics of our research and did this seven times, moving quickly between the designated rooms where seven groups of people from the entertainment industry plus some science-interested members of the public waited.

We were encouraged to bring a prop we could carry in our hands, but no Powerpoint slides or video clips were allowed. In an email message to me after the event, Program Director Rick Loverd explained that since its founding in , the Exchange has hosted about events of various types, including about a dozen science speed dating gatherings:. The most common way for one of these consults to unfold is through a screenwriter, producer, director, studio executive, or actor calling our SCI hotline.

Any entertainment professional who calls that line with a question about Science, Engineering, or Medicine will be connected to a field expert for free.

Albert Einstein

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Second, light travels at an unvarying speed of , miles a second. No matter how fast an observer is moving or how fast a light-emitting.

The world’s most accurate clock has neatly shown how right Albert Einstein was years ago, when he proposed that time is a relative concept and the higher you live above sea level the faster you should age. Einstein’s theory of relativity states that time and space are not as constant as everyday life would suggest. He suggested that the only true constant, the speed of light, meant that time can run faster or slower depending on how high you are, and how fast you are travelling.

Now scientists have demonstrated the true nature of Einstein’s theory for the first time with an incredibly accurate atomic clock that is able to keep time to within one second in about 3. James Chin-Wen Chou and his colleagues from the US National Institute of Standards and Technology in Boulder, Colorado, found that when they monitored two such clocks positioned just a foot apart in height above sea level, they found that time really does run more quickly the higher you are — just as Einstein predicted.

We would say our results agree with Einstein’s theory — we weren’t expecting any discrepancies and we didn’t find any,” he explained. The atomic clocks used in the study are based on the tiny vibrations of aluminium atoms trapped in an electric field. These vibrations are in the same frequency range of ultraviolet light, detected by lasers, which effectively means that the atomic timepieces are optical clocks, accurate enough to measure billionths of a second and to keep time accurately over millions of years.

It means that the clocks were able to perceive the dilation of time with height above ground that was first predicted by Einstein. For every foot above ground, for instance, the clocks showed that someone would age about 90 billionths of a second faster over a year lifetime, Dr Chou said.

Was Einstein the first to discover general relativity?

Once published, a cache of two dozen love letters to the woman who would become his second wife – but written while he was still married to his first – may also attract the curious. At present, only a selection of documents dating from before , when Einstein was 44, are available. Some items, he acknowledged, were so personal that the archivists weighed carefully whether make them public.

Einstein envisioned a committee of eight Jews and Arabs — a physician, a jurist, a trade unionist and a cleric from either side — that would meet weekly:.

Traveling at the Speed of Thought The paper presented the final form of what are called the Einstein Equations, the field He found a copy of the proofs of Hilbert’s paper, with a printers stamp dating it to December 6,

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David Wilkins, a retired Dow Chemical litigation attorney and American Red Cross diversity chief, explores the lost promises of Reconstruction. America was offered the opportunity to repudiate racism and white supremacy but chose not to. That choice continues to haunt us. Wilkins explains these choices and their continuing hold on American life.

Susan MacManus, a political analyst and commentator and retired distinguished emerita of government and international affairs at USF, shares insights into what the early numbers are telling us. Log In. Keep it Clean. Please avoid obscene, vulgar, lewd, racist or sexually-oriented language. Don’t Threaten.

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First, though, a capsule explanation of “energy equals mass times the speed of light squared” might be helpful. On the most basic level, the equation says that energy and mass matter are interchangeable; they are different forms of the same thing. Under the right conditions, energy can become mass, and vice versa. We humans don’t see them that way—how can a beam of light and a walnut, say, be different forms of the same thing?

So why would you have to multiply the mass of that walnut by the speed of light to determine how much energy is bound up inside it?

Years before Hubble detected cosmic expansion, Einstein had fashioned a theory, that their trusted laws of motion, dating back more than years to Isaac Newton, could not (E stands for energy, m for mass, and c for the speed of light.).

The speed of light is ,, mph. And in this equation, it’s squared, or multiplied by itself. It’s an enormous number. It’s also a constant. The speed of light never changes. An object’s mass and energy are related to each other. They change, but the speed of light doesn’t. The atom bomb: Einstein showed that a tiny bit of mass can be converted into a huge amount of energy because c2 is such a huge number.

Scientists used less than 1 percent of 2 pounds of uranium in the bomb that destroyed Hiroshima, Japan, at the end of WWII.

Theory of relativity

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These amazing feats of memorization are more about technique than biology. In Moonwalking with Einstein, Joshua Foer talks about how he comes to realize this when covering a national memory competition event as a journalist — then goes on to win the competition himself the next year by using the techniques he learned. He shares the techniques in detail and dispels doubt and rumor in this entertaining book. CDN Inc. Have questions on how we can help with your next project?

Was Einstein’s Theory of Relativity … Wrong?

Albert Einstein and Longines were honorary guests at Antiquorum when the famous New York auction house sold a Longines watch that had belonged to the famous physicist Albert Einstein. The timepiece — an elegant gold model dating from — fetched for a total of USD ,, thus becoming the Longines watch that has fetched the highest price ever at auction.

It seems that Albert Einstein incidentally owned a second watch made by the same manufacturer: a Longines pocket-watch dating from which is now in the History Museum in Berne Switzerland. For Einstein, time is not an absolute dimension since it behaves relative to the speed of light, slowing perceptibly the closer we come to the speed of light.

But its original meaning, dating to the 17th century, is about the very gravitational ripples propagate at a certain finite speed—namely that of.

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What does Einstein’s famous equation really mean?

General and special relativity are two of the more mind bending theories in modern science. According to them, space and time are a singular entity that is warped by mass, where measurements completely depend on how the person doing the measuring is moving. People generally believe that relativity has no effect in everyday life, since it’s generally discussed in terms of things going very fast or objects in highly warped spacetime.

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When physicists announced last week that they had detected subatomic particles, called neutrinos, that appeared to be traveling faster than the speed of light, it seemed to be an exception to a cosmic speed limit set by Albert Einstein’s special theory of relativity. Einstein’s theory, which he proposed in , describes the relativity of motion, particularly the motion of anything moving at or close to the speed of light. At the time, people believed that light waves, just as sound waves, ocean waves or shock waves, had to travel through a medium.

But rather than air, water or ground, they believed light waves traveled through a substance called ether, less tangible than air, that pervaded the universe. Scientists assumed that the laws of physics would be different for an object at rest with respect to the ether, and with the proper experiments it would be possible to figure out what was truly at rest, according to Peter Galison, a professor of physics and the history of science at Harvard University.

In other words, the properties of physics are the same for me whether I am riding my bicycle or sitting on a park bench. Special relativity, however, does not apply to acceleration. Einstein would tackle this later in his general theory of relativity. Special relativity is also based on a second assumption that gives the speed of light — , miles per second million meters per second — in a vacuum a special status. Einstein postulated that light always travels at the same speed for every observer, regardless of that observer’s speed, Galison explained.

So, if you have a fast enough car, in theory, you could catch up to a bullet. But you could never catch up to, or even reduce the apparent speed of a pulse of light, regardless of whether you were driving toward it or away from it.

General Relativity: the Principle of Equivalence

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The theory of relativity usually encompasses two interrelated theories by Albert Einstein: The effect of Gravity can only travel through space at the speed of light, not faster or Chronological dating · Chronobiology · Circadian rhythms · Dating.

On November 25, , Einstein submitted one of the most remarkable scientific papers of the twentieth century to the Prussian Academy of Sciences in Berlin. A few years ago, we marked the centenary of that theory. As a result Einstein became, and has remained, the most famous and celebrated scientist since Newton himself.

But what if Einstein was not the first scientist to publish these famous equations? Should they be called, not the Einstein equations, but the Einstein-Hilbert equations, honoring also the German mathematician David Hilbert? In , Einstein visited Hilbert in Gottingen, and Hilbert convinced him that the goal of a fully general relativistic theory was achievable, something Einstein had nearly convinced himself could not be done.

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