Tag: Albert Einstein

Nothing New Under the Burning Sun.

“‘This world is a strange madhouse. Currently, every coachman and every waiter is debating whether relativity theory is correct. Belief in this matter depends on political party affiliation.’ So wrote Albert Einstein in a letter to his one time collaborator, the mathematician Marcel Grossmann in 1920.“

A recent history-of-science paper by a Jeroen van Dongen of Utrecht University looks into the anti-relativity theory movement of the 1920’s, and how it compares to today’s climate change denialism. “Anti-relativists were convinced that their opinions were being suppressed. Indeed, many believed that conspiracies were at work that thwarted the promotion of their ideas.” (See also: Evolution and Scopes.)

A Measure of Darkness.

“‘We’ve discovered this incredible dark energy, we don’t understand what the hell it is,’ said Lawrence Krauss, a physicist at Arizona State University. ‘It’s extremely small, extremely weak, and it’s so close to being zero, it’s just a total mystery why it should have this small value and not be zero.” While they’re still not entirely sure what in fact they’re looking at, Harvard-Smithsonian astrophysicists announce they’ve found another way to measure and quantify “dark energy”, a.k.a. the repulsive “cosmological constant” force causing the universe to expand rather than contract. “This is a much-needed confirmation that the earlier work was correct, the astronomers said, comparing it to football referees examining a controversial play with multiple camera angles.“

As an added bonus, the results announced today also seem to confirm Einstein’s general theory of relativity. “‘It’s never been proved right on the scale of the observable universe,’ Spergel said.”

The Atlantic Sesquicentennial.

“In The Atlantic’s very first issue, in 1857, the magazine’s founders — an illustrious group that included Ralph Waldo Emerson, Oliver Wendell Holmes, Henry Wadsworth Longfellow, and James Russell Lowell — declared that they would dedicate their new publication to monitoring the development, and advancing the cause, of what they called ‘the American idea.’ And for the last century and a half, the magazine has been preoccupied with the fundamental subjects of the American experience: war and peace, science and religion, the conundrum of race, the role of women, the plight of the cities, the struggle to preserve the environment, the strengths and failings of our politics, and especially, America’s proper place in the world.” To commemorate the magazine’s 150th anniversary, The Atlantic Monthly publishes The American Idea, an anthology of articles which includes republished writings by TR, W.E.B. DuBois, Albert Einstein, John Muir, Helen Keller, and Vannevar Bush. (Alas, only ten of the included articles are online.)

On the Dark Side.

Using the thankfully soon-to-be-refurbished Hubble, astronomers find more evidence of “dark energy” in the early universe working along the lines of Einstein’s famous fudge factor, the cosmological constant, to combat a gravitational crunch. “‘Dark energy makes us nervous,’ said Sean Carroll, a theoretical physicist at the California Institute of Technology who was not involved in the supernova study. ‘It fits the data, but it’s not what we really expected.’“

Inconstant Cosmos.

“‘As you go back in time, the universe is pushing [outward] less and less,’ he said. ‘At some point, the pressure of dark energy is zero and is exerting no force on the universe. There is no explanation for it.'” New cosmological research announced yesterday further muddles our understanding of the expansion of the early universe and (once again) casts doubt on Einstein’s recently resurrected cosmological constant. “Schaefer based his findings on analysis of ultra-bright cosmic explosions called gamma-ray bursts, detected as far as 12.8 billion light-years away. He found that the most distant explosions appeared brighter than they should have been if the universe were accelerating at a constant rate.“

No more paradoxes.

“‘Things aren’t getting better; they’re getting worse. The White House is completely disconnected from reality,’ said Hagel, a member of the Foreign Relations Committee. ‘It’s like they’re just making it up as they go along. The reality is that we’re losing in Iraq.’” Two quality links via the consistently splendid Follow Me Here: First, Republican Senators McCain and Hagel call out Dubya on the war. Between this and “Freedom Fries” Jones, are the floodgates opening in GOP-land?

And, on an altogether different note, physicists cast doubt on the possibility of time travel paradoxes “When Greenberger and Svozil analysed what happens when…component waves flow into the past, they found that the paradoxes implied by Einstein’s equations never arise. Waves that travel back in time interfere destructively, thus preventing anything from happening differently from that which has already taken place.” (Well, looks like time-traveling historians won’t need to worry about any Primeresque recursions, then.)