25 posts tagged with time and science.
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What Happened to the ‘Future Leaders’ of the 1990s?

In its December 5, 1994 issue, Time Magazine picked 50 people who would be leaders in the future. They decided to revisit what happened to each person on the 20th anniversary of their predictions.
posted by reenum on Dec 13, 2014 - 26 comments

The observer at the end of time: Of immortal watchers and imaginary data

In a Multiverse, What Are the Odds? "Testing the multiverse hypothesis requires measuring whether our universe is statistically typical among the infinite variety of universes. But infinity does a number on statistics." (previously) [more inside]
posted by kliuless on Nov 9, 2014 - 47 comments

"You can measure your life in a number of drops."

World's longest-running experiment captures elusive tar pitch drop fall on video after 84 years of waiting — though, sadly, too late for physicist and former pitch drop custodian Prof. John Mainstone, who passed away last year.
posted by Blazecock Pileon on Apr 19, 2014 - 15 comments

Coordinating The World

Chief Scientist Demetrios Matsakis gives us a tour of the U.S. Naval Observatory's Time Services and explains where time comes from.
posted by gman on Mar 20, 2014 - 33 comments

conservation of information

A Black Hole Mystery Wrapped in a Firewall Paradox - "A paradox around matter leaking from black holes puts into question various scientific axioms: Either information can be lost; Einstein's principle of equivalence is wrong; or quantum field theory needs fixing." [more inside]
posted by kliuless on Aug 18, 2013 - 36 comments

On Dinosaur Time...

Less time separates us from Tyrannosaurus rex than separated T. rex from Stegosaurus.
posted by Artw on Jun 22, 2013 - 66 comments

Students all over the world are demanding a new curriculum.

A Renaissance in Economics The American President Ronald Reagan once quipped, “The nine most terrifying words in the English language are, ‘I’m from the government and I’m here to help.’” I get the same shivers when someone introduces themselves as an economist.
posted by infini on Feb 13, 2013 - 39 comments

direct realism

The Nature of Computation - Intellects Vast and Warm and Sympathetic: "I hand you a network or graph, and ask whether there is a path through the network that crosses each edge exactly once, returning to its starting point. (That is, I ask whether there is a 'Eulerian' cycle.) Then I hand you another network, and ask whether there is a path which visits each node exactly once. (That is, I ask whether there is a 'Hamiltonian' cycle.) How hard is it to answer me?" (via) [more inside]
posted by kliuless on Dec 1, 2012 - 19 comments

C.G.P. Grey

Here is Coffee: The Greatest Addiction Ever and other neat videos by C.G.P. Grey who explains non-obvious aspects of science, history, geography, elections, and economics in entertaining and clear ways. [more inside]
posted by Blasdelb on Dec 1, 2011 - 20 comments

Ten Things Everyone Should Know About Time

Ten Things Everyone Should Know About Time.
posted by empath on Sep 1, 2011 - 131 comments

This view of time does not look encouraging for time travelers

The concept of time as a way to measure the duration of events is not only deeply intuitive, it also plays an important role in our mathematical descriptions of physical systems. For instance, we define an object’s speed as its displacement per a given time. But some researchers theorize that this Newtonian idea of time as an absolute quantity that flows on its own, along with the idea that time is the fourth dimension of spacetime, are incorrect. They propose to replace these concepts of time with a view that corresponds more accurately to the physical world: time as a measure of the numerical order of change.
posted by finite on Apr 25, 2011 - 127 comments

truth hangs by a hair

A DNA test has proven that a man was executed for murder by the State of Texas on the basis of false forensic evidence. [more inside]
posted by hat on Nov 12, 2010 - 99 comments

Asteroid Discovery From 1980 - 2010

Asteroid Discovery From 1980 - 2010: an animation of the solar system that highlights asteroids as they are discovered. I would suggest watching it in a high resolution.
posted by brundlefly on Aug 26, 2010 - 26 comments

It weebles and it wobbles but it won't fall down.

Year On Earth breaks it down, explaining the complicated mechanics involved in trying to determine how long a year really is, why seasons and ice ages happen, and how not all years are created equal.
posted by loquacious on Jul 5, 2010 - 22 comments

Rules for Time Travelers

Rules for Time Travelers [Spoiler? alert.]
posted by BitterOldPunk on May 14, 2009 - 82 comments

Time

Flow of Time is a BBC documentary that "tries to explain time and covers the different ways we have used to understand Time, religion, mathematics, relativity, and quantum mechanics." Part 1, 2, 3, 4
posted by nola on Oct 21, 2008 - 10 comments

A Profound Sense of Time

A Profound Sense of Time. "PZ Myers on the process that prompts the growth of all vertebrates from embryos to unspecialized segments to multicellular animals."
posted by homunculus on Oct 20, 2007 - 12 comments

When I'm bad, do I still get to blame my brothers and sisters?

The New "Science" of Siblings An amusing article from Time magazine by Jeffrey Kluger which reports that your siblings have more influece on your personality than any other group-- parents, peers, spouses, children, etc. My ex-wife thinks I'm sarcastic, combative, insensitive, etc. Do I get to blame my brothers and sisters for this now? Another article on this issue "The Science of Siblings". Apparently, they could have made me more likely to be gay too.
posted by notmtwain on Jul 9, 2006 - 28 comments

Anticlockwise?

In one corner, precise astronomers who just want to keep things as they are. In the other, revisionist telecommunications officers. Fight!
posted by goodnewsfortheinsane on Nov 10, 2005 - 25 comments

Italo Calvino, 1923-1985

"If time has to end, it can be described, instant by instant," Mr. Palomar thinks, "and each instant, when described, expands so that its end can no longer be seen." He decides that he will set himself to describing every instant of his life, and until he has described them all he will no longer think of being dead. At that moment he dies.
In memoriam of Italo Calvino, who died exactly 20 years ago.
"Calvino's novels" by his friend Gore Vidal. Calvino's obituary by Vidal, il maestro William Weaver's essay on Calvino's cities, Jeanette Winterson on Calvino's dream of being invisible, and Stefano Franchi's philosophical study on Palomar's doctrine of the void. More inside.
posted by matteo on Sep 18, 2005 - 18 comments

Drip drip drip...

Between whimsy and science lay the water clocks of Bernard Gitton.
posted by arse_hat on Dec 26, 2004 - 6 comments

Stem Cell Research

The False Controversy of Stem Cell Research. Kinsley: In fact, thinking it through is a moral obligation, especially if you are on the side of the argument that wants to stop or slow this research. It's not complicated. An embryo used in stem-cell research (and fertility treatments) is three to five days past conception. It consists of a few dozen cells that together are too small to be seen without a microscope. It has no consciousness, no self-awareness, no ability to feel love or pain. The smallest insect is far more human in every respect except potential.
posted by skallas on May 31, 2004 - 64 comments

Time

Interesting article on how science will change our understanding of time. [Via AlDaily]
posted by gregb1007 on Jan 1, 2004 - 16 comments

Interesting way to look at time

The cable clock. This clocks tells time, just like any other clock, but the movement of the hands is hypnotic and beautiful. To physicists, time is defined by quantum mechanics. A photon with energy h (Planck's constant) behaves as though it were oscillating once per second. For Philosphers, time is less concrete, and they love to talk about it. Western society lives by the clock - does it make a difference if this is the kind of clock that you live by? After all, everyone knows that time is money. If you have to be a clock watcher, does it help if the clock is as calming as the Cable Clock is?
posted by kristin on Sep 9, 2003 - 20 comments

Anyone got the time?

Just how plausable is time travel? Could you go back in time and kill your own grandfather?. Would you want to? Time travel is a popular subject for films, but do the writers work out exactly what is happening? Current opinion seems to be that time travel is only possible to the future, and is only one way, by travelling at near light speed. However despite this, time machines seem to already be on sale.
posted by Orange Goblin on Feb 10, 2003 - 53 comments

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