Is Psychometric g a Myth?
- "As an online discussion about IQ or general intelligence grows longer, the probability of someone linking to statistician Cosma Shalizi's essay g, a Statistical Myth
approaches 1. Usually the link is accompanied by an assertion to the effect that Shalizi offers a definitive refutation of the concept of general mental ability, or psychometric g
." [more inside]
posted by kliuless
on Apr 11, 2013 -
Dissent Is the Health of the Democratic State
- "We live in big, complex societies, which means we are thoroughly interdependent on each other, and that we will naturally have different ideas about how our life in common should go, and will have divergent interests. This means that politics we shall always have with us. It also means that political problems are largely ones about designing and reforming the institutions which shape how we interact with each other..." (via
) [more inside]
posted by kliuless
on Mar 6, 2013 -
Have you ever wondered what the water temperature off the Kamchatka Peninsula is? What about the wind speed in the Andaman Sea? Or maybe you’re losing sleep over the chlorophyll levels in the South Pacific. Fortunately, all of that information –- and 450 million other data points collected from oceanographic instruments around the world –- is freely and easily accessible thanks to the Marinexplore project. [more inside]
posted by Egg Shen
on Aug 28, 2012 -
The Royal Observatory, Greenwich has put together the fantastic short video Measuring the Universe
which briefly describes the different techniques used to allow us to calculate the vast distances to stellar objects in space. [via]
posted by quin
on May 30, 2012 -
The official SI
definition of a kilogram is "equal to the mass of the international prototype," a cylinder of nine-tenths platinum and one-tenth iridium, forged in the 1880s. "Le Grand K," as the prototype is affectionately known, is the basis not only for the measurement of mass and volume, but of force
, and luminosity
—and since the 1940s, Le Grand K has been losing weight. Now scientists are trying to redefine the kilogram in terms of fundamental constants
—and in doing so, perhaps fulfill the 18th-century promise of a universal, fundamental system of measurement "for all people, for all time."
posted by Zozo
on Oct 4, 2011 -
Redefining Avogadro's Number.
A mole is the number of molecules in a gram of water: ~6.022 x 1023
. Unfortunately "a gram" is defined by a chunk of metal
in a vault
in France, the last of the seven SI units still defined by a physical artifact. Since the reference mass (known as "Le Gran K") is actually changing over time
(due to cleaning, handling, etc), the definition of a gram is currently temporally unstable. Now a new proposal
has been put forward to explicitly define the number to be a known integer: 602,214,141,070,409,084,099,072, which would fundamentally change the way we define a gram. Le Gran K could become a historical curiosity like the original platinum meter stick
posted by dkg
on Mar 2, 2007 -
The LoTR musical needs Hobbits of a certain stature.
What stature is that, budding thespians might ask? Well, smoot
-height, of course! (Actually, 5'7" — or 170 cm — is the maximum height a would-be Frodo or Bilbo could be.) Another requirement is the ability to sing two songs ... and hairy appendages wouldn't hurt. So start knitting those foot-merkins
! Auditions: 18 September, Theatre Royal Drury Lane, Catherine St (tube stop: Covent Garden).
posted by rob511
on Sep 12, 2006 -
Do Penis Enlargement Pills Work? I'll be chronicling my experience here for the benefit of others. I'll add that I am just a regular guy living in New York City (Go Yankees!) who wants a larger penis.
(via Kill Ugly Radio). I'll be curious to hear how this progresses. This is safe for work (no pics; just measurements).
posted by KevinSkomsvold
on Aug 12, 2003 -
it's 95.5 do you know where your children are? (Check out the whole site; it's a wonderful melange of crazy and not so crazy ideas.)
posted by silusGROK
on May 29, 2001 -
Gee, stupid me. I thought it was a pretty good statue, myself.
Seems someone with a laser beam and time on his hands has worked out that the statue of David squints. Wow. Thanks a lot, mister! I can rest a lot easier knowing that.
Why, I might have been misled into believing it was some kind of masterpiece or something.
What, he couldn't find anything more
useless to do with his sabbatical?
posted by Ezrael
on Jun 9, 2000 -