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15th-Dec-2009 11:01 am - Weighty Matters
Way, way, way back in undergrad, I was told the answer to this was known. It surfaced in my mind again walking to work this morning as I was trying to puzzle out the movie Primer. I'm not a physicist, so I thought I would put it to this group and see if anyone knows the answer.

If the sun were to vanish suddenly (no, I don't know how, just say that the FSM did it) it would take eight minutes (more or less) before we on earth were plunged into darkness.

What about gravity? Would the earth immediately take off on a tangent to it's orbit or would it continue to orbit the empty spot for eight minutes?

Why? The speed of light in a vacuum is the "speed limit" for the universe. Is gravity bound by this? How does gravity "work" in this case?
I've been trying to track down an interactive visualization of different magnitudes of length that I once saw, but it's been impossible to google my way to it. Maybe someone here remembers it?

It's similar to the Utah cell size and scale flash animation but instead with detailed and slightly unsettling black and silhouettes of different objects such as insects, elephants, atoms, mount fuji, the solar system and such. So unlike the Utah animation it has both the very small and very large. The silhouettes are arranged so that as you move the slider to zoom in or out, you see the objects alongside each other.


Edit: [info]xx_sprout found it! :-D It's Universcale by Nikon
15th-Dec-2009 12:54 pm - Article request
Hello comrades!

If any of you have access to the full version of this article and would send it my way, I'd be highly thankful:

Empathy with Animals and with Humans: Are they Linked? by Elizabeth S. Paul from Anthrozoos: A Multidisciplinary Journal of The Interactions of People & Animals, Volume 13, Number 4, 2000 , pp. 194-202(9)

If you do have access to this article, pleas email it to MeyRevived(at)hotmail(dot)com.

Many, mny thanks!
13th-Dec-2009 09:23 pm - Cake, Pie and Cookie Food Facts
  • Pies and tarts are the most popular desserts with people whose dinner check is under 15.00-dollars.
  • Try brushing the bottom crust of fruit pies with egg whites to prevent the fruit juices from soaking in.
  • Make sure your oven has been pre-heated for 15 to 20 minutes before placing a cake in.
  • Always bake on a middle shelf in the oven; the heat will circulate more evenly.
  • To keep a cake from drying out, attach slices of bread with toothpicks to any exposed cut edges of cakes.
  • To ice a many-layered cake, try attaching all the layers with a few pieces of dry spaghetti.
Read more... )
13th-Dec-2009 12:49 pm - Apple Facts
  • The crabapple is the only apple native to North America.
  • Apples come in all shades of reds, greens, and yellows.
  • Two pounds of apples make one 9-inch pie.
  • Apple blossom is the state flower of Michigan.
  • 2,500 varieties of apples are grown in the United States.
  • 7,500 varieties of apples are grown throughout the world.
  • 100 varieties of apples are grown commercially in the United States.
  • Apples are grown commercially in 36 states.
  • Apples are grown in all 50 states.
  • Apples are fat, sodium, and cholesterol free.
  • A medium apple is about 80 calories.
  • Apples are a great source of the fiber pectin. One apple has five grams of fiber.
  • The pilgrims planted the first United States apple trees in the Massachusetts Bay Colony.
  • The science of apple growing is called pomology.
Read more... )
11th-Dec-2009 11:26 am - Lab based cock-ups
A couple of weeks back, I earned the serious contempt of my lab-mates by leaving our (one and only) UV cabinet on over night, with a gel inside it, thus dehydrating my gel to the point where it fused to the cabinet. Uh-oh. We did sort it out in the end without totally wrecking the equipment, but I had some proper dog house time for it.

Not long afterwards, my supervisor regailed our undergrads with a story of how, in the early weeks of his PhD, he didn't secure the rotor in a centrifuge sufficiently well, and it took off, destroying the inside of the centrifuge, and mangling the ovaries and placenta in it into the bargain.

So I just wondered: what, to date, has been your worst lab cock up? How did it happen? Did you try to hide it? And what were the consequences....

Tanglewood.
11th-Dec-2009 12:07 am - Poo facts for December 5-11, 2009
Poo nugget for this weekend: Sour Milk - The early twentieth-century observation by Russian scientist and Nobel Prize winner Elie Metchnikoff, that rural Bulgarians who consumed fermented milk lived long lives has led to the widespread consumption of sour milk. Metchnikoff hypothesized that the lactic acid bacteria present in fermented milk conferred health benefits. Soon after this observation, doctors across Europe began prescribing sour milk to their patients. One hundred years later, healthful bacteria are still found in many dairy products, including fermented milk like kefir.

Poo nugget for Monday, December 7: Doo You Know? - When A Penny Saved Is Not A Penny Earned - The British saying "to spend a penny" is a euphemism for using the toilet. This saying comes from the British practice of paying to use public toilets. Although pay toilets fell out of favor in the United States in the 1970s, the United Kingdom still uses these facilities for Number Two.

Poo nugget for Tuesday, December 8: Worms Suck - This day in 1813 marks the birth date of Angelo Dubini, the Italian physician who discovered the hookworm, a parasite that causes iron deficiency anemia. He found the worm, Anchylostoma duodenale, in 1843, when conducting an autopsy on a peasant woman. This worm literally sucks blood from the intestinal tract, and its spread amongst workers gave rise to such conditions as "miner's anemia" and "bricklayer's anemia."

Poo nugget for Wednesday, December 9: A Picture Is Worth A Thousand Words... - The Bristol Stool Scale is a tool used by gastroenterologists to help standardize the discourse on poo. Utilizing pictures and descriptions such as "like a sausage but with cracks," the scale breaks down poo into seven types. British physicians first published this poo pictorial in 1990, and found that the appearance of poo correlated with the amount of time it spends in the colon. The harder and more lumpy the stool, the longer the travel time.




Poo nugget for Thursday, December 10: Always Shake With Your Right Hand - Post-poo cleanup in countries such as India and Pakistan occurs with the use of water and the left hand. For this reason, extending one's left hand in greeting is considered impolite and offensive, and maybe a little gross.

Poo nugget for Friday, December 11: The Worst Case of Constipation - The world's largest preserved colon once contained over forty pounds of stool, and was stretched to many times its original size. On display at the Mütter Museum in Philadelphia, the colon's owner suffered from Hirschprung's disease, a thankfully rare disorder that results in the inability to empty one's bowels.
10th-Dec-2009 11:30 am - Bacterial Culture
Anybody got opinions about baffled flasks vs. regular?
10th-Dec-2009 12:02 pm - Happy Birthday Ada Lovelace!
Today is the birthday of Ada Lovelace

Do you ever wish you could go back in time, just to tell someone "You know, you're *right*. It does work!"?

Possibly not coincidentally, NPR ran a segment on the Difference Engine (the slightly less complex version of the Analytical Engine), which was just recently built (neither was ever more than designs in Ada or Babbages lifetimes). There's an *awesome* video of the thing working.

http://www.npr.org/templates/story/story.php?storyId=121206408

It gives me shivers; just wish she could have seen her programs run on the thing.
Does anyone know of a science dictionary that can be downloaded for Mac OS X, or or specific programs like OpenOffice and Safari? What I mean is, something that can add common scientific terms to the dictionary so that the red squiggly line doesn't appear every time I type them. I know that these words can be added individually, but since I use them so much, and do rely on the automatic spellcheck to catch typos and words I truly didn't know how to spell, it would be nice to preload some common terms. It's finals week and I've been doing a lot of computer work these past few days, and it's annoying having to add words like monosulfide and mycete to the dictionary. I'm slowly building my computer's vocabulary, but I'm always surprised at how many terms I haven't added yet.
I'm borrowing bits and pieces of other labs' stuff while the kerfluffle over setting up the common lab gets resolved and I can figure out what's going on before I totally lose my mind and strangle all of the PIs in the group (but that's a different gripe)...

So anyway--when did BioRad get all "Supereasy" and have these little casting kits with the stupid click-and-lock things? I had to cast my gel 4 time yesterday to get the damn thing to stop leaking, and apparently I am either too clumsy or my hands are too small to do the push-reach-click thing, because while I get the theory, the reality is that the glass plate somehow always slides up and I lose my seal and...argh! I want my c-clamps, little black spacers, and the little casting rig back! I want the glass plates back--none of this stupid-little-spacer-included thing!

Argh...you know you've been doing lab work too long when...
9th-Dec-2009 12:23 am(no subject)
Matt Groening, creator of The Simpsons, has sisters called Maggie and Lisa, and parents called Homer and Marge. He didn't want to name Grampa Simpson after his own grandfather, so let the writers choose a name. The writers chose the name Abraham, which coincidentally is also Groening's grandfather's name.

Source: Wikipedia entry for Matt Groening
8th-Dec-2009 04:36 pm(no subject)
Adolf Hitler targeted the Jews in the Holocaust not simply out of hate, but for strategic reasons. Describing his plan to take over Germany, and then Europe, he wrote:

I scanned the revolutionary events of history and… [asked] myself: against which racial element in Germany can I unleash my propaganda of hate with the greatest prospects of success? …I came to the conclusion that a campaign against the Jews would be as popular as it would be successful.

Jews, Hitler figured, were already well hated and, thus, would lend themselves to demonization quite easily.

However, Ronald Berger writes in his essay The “Banality of Evil” Reframed, once it was decided that the Jews would be targeted, “the most immediate difficulty that confronted the Nazis was the construction of a legal definition of the target population”.

Who was Jewish? At first, the Nazis defined Jews as non-Aryan. But this became problematic because nations with whom Germany wanted to ally (e.g., Japan) were arguably non-Aryan. The regime settled on a definition that linked non-Aryan-ness to religion. Both racial and religious characteristics could qualify one as “Jewish.”

Source, with pictures instruments for measuring Jewishness: Sociological Images

Your (LOL) funny bone.

But your funny bone isn't actually a bone at all. Running down the inside part of your elbow is a nerve called the ulnar nerve. The ulnar nerve lets your brain know about feelings in your fourth and fifth fingers. It's also one of the nerves that controls some movement of your hand.

You get that funny feeling when the ulnar nerve is bumped against the humerus (say: hyoo-muh-rus), the long bone that starts at your elbow and goes up to your shoulder. Tapping your funny bone doesn't do any damage to your elbow, arm, or ulnar nerve. But it sure feels strange!

Source: KidsHealth

8th-Dec-2009 09:03 pm - On the research of the Antarctic.
airshipScientific researches in Antarctica linked to enormous difficulties not only because of the harsh climatic conditions on the mainland of the continent, but also because of the high cost of preparations for the expeditions. In turn, the high expedition’s costs depend on the inaccessibility of the Antarctic for the marine vessels and aircrafts. As a rule, only icebreakers can go to the Antarctic latitudes. The air traffic is even more difficult because of the extreme hardship building of landing strips on the ice-covered continent.


In this small article we would like to suggest some non-trivial approaches to solve traffic problems in Antarctica.
7th-Dec-2009 05:00 pm - What is the world's largest library?



The United States Library of Congress in Washington D.C. ranks as the largest library in the world. How large is it?

The nation's library holds over 118 million items which require more than 500 miles of shelving.
Source: Library Spot

7th-Dec-2009 04:36 pm - basic software for handling data
Hey guys. I'm racking my brain, trying to think if I've missed any software that scientists use for basic data analysis. Can anyone suggest anything that should be added to this list?
  • Matlab
  • Mathematica
  • Maple
  • Excel (yes, really)
Thanks in advance!

Edited to add:
Which ones do you think are the most widely used?

If it is something that is used in every day life (like Excel), it's even more interesting to me.
7th-Dec-2009 05:02 pm(no subject)
Guys!

Please help me with this article.

igor dot zlot at gmail

Thanks in Advance!!!
6th-Dec-2009 09:47 am(no subject)
Herr Professor has his latest manuscript reviews back, and he's not thrilled with the editorial decision.

http://www.youtube.com/watch?v=-VRBWLpYCPY

5th-Dec-2009 12:54 pm - The Lava Lamp.
Edward Craven-Walker is responsible for bringing the lava lamp into millions of homes over the years. After seeing a fascinating egg-timer with a blob of wax in it at an English pub around the mid-1940s, and being informed that the person who invented it had passed away, Craven-Walker spent the next 15 years perfecting the lava lamp. Beginning in 1963, Craven-Walker brought the novelty lamps to trade shows, and by 1965 they were being sold in the U.S. The lava lamp, whose original name was "Astrolight" or "Astro Lamp," became a staple fixture during the psychedelic 1960s. More lava lamps were sold in the 1990s than in the 1960s, 1970s, and 1980s combined.

source.
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Turtles have been on the earth for more than 200 million years. They evolved before mammals, birds, crocodiles, snakes, and even lizards.

 

The earliest turtles had teeth and could not retract their heads, but other than this, modern turtles are very similar to their original ancestors.

 

Several species of turtles can live to be over a hundred years of age including the American Box Turtle.

 

One documented case of longevity involves an adult Indian Ocean Giant Tortoise that when captured as an adult was estimated to be fifty years old. It then lived another 152 years in captivity.

 

Turtles live on every continent except Antarctica.

 

 

Read more... )

 

 

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