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Betsy, co-mod
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Nov 06, 2011 02:40PM

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or maybe just E = MC^2

Betsy wrote: "Science vacations:
http://sciencegetaways.com/2012/01/19..."
As the caption says, this type of lenticular cloud is very frequently seen in Colorado, especially in the winter.
Another interesting cloud feature that we saw occasionally in Colorado is the cloud corona. It is caused by diffraction by water droplets or ice crystals. This phenomenon is so vivid, that the first time I saw it, I thought it was due to some rocket experiment.
http://sciencegetaways.com/2012/01/19..."
As the caption says, this type of lenticular cloud is very frequently seen in Colorado, especially in the winter.
Another interesting cloud feature that we saw occasionally in Colorado is the cloud corona. It is caused by diffraction by water droplets or ice crystals. This phenomenon is so vivid, that the first time I saw it, I thought it was due to some rocket experiment.

http://www.flickr.com/photos/robertbr...
Jenny
Jenny wrote: "Hi All; here in the UK Pennines we don't get to see lenticular clouds very often (in fact, I've still never seen them), but we had an instance just before Christmas, and they were very spectacular ..."
Beautiful photo! Are there hills or mountains nearby, in that general direction?
Beautiful photo! Are there hills or mountains nearby, in that general direction?

& this was taken just to the East of the Pennines,
a n-s ridge of hills, the backbone of England.
Conditions not usually right for these clouds, so
a special treat.
Looking for something fun to do in December when the world doesn't end? How about Cruisegeddon:
http://blogs.discovermagazine.com/bad...
http://www.astrosphere.org/blog/2012/...
http://blogs.discovermagazine.com/bad...
http://www.astrosphere.org/blog/2012/...


Dr. Leonardo Noto
www.leonardonoto.com (nonfiction book reviews and author updates) or follow me on Twitter @DrLeonardoNoto (medical tweets).


http://www.instructables.com/id/The-A..."
That one is fantastic! thanks for the link, Betsy.

"Two Neutrinos go through a bar."
Q: Why can't you trust an atom?
A: They make up everything
"Did you hear about the man who got cooled to absolute zero? He's OK now."
A photon checks into a hotel. The bellhop asks: "Can I help with you luggage?" The photon replies: "I don't have any, I'm traveling light."
Q: What did one physicist say when he wanted to fight another physicist?
A: Let me atom.

http://io9.com/this-beautiful-jewelry..."
Ha! Love it!
How good is your general knowledge of psychology? Take one of Steven Pinker's exams:
http://www.nytimes.com/interactive/20...
http://www.nytimes.com/interactive/20...

I am totally gonna go to town on this.....dunno what equations I would want yet, but I def am interested :)

the first logician says "I don't know."
the second logician says " I don't know."
the third logician says "yes."

and Newton goes, "no you didn't. you found Pascal!"

http://www.youtube.com/watch?v=uYi07E...

http://www.youtube.com/watch?v=ahXIMU...

http://www.youtube.com/watch?v=GFLkou...
this one made me go "no no no, just NO" lol it can't be.
Let's take this and make a portal. NOW. cause that's what it's amounting to.....
Betsy wrote: "Physics themed halloween costumes:
http://www.symmetrymagazine.org/artic..."
Reminds me of Sheldon's costume, in "Big Bang Theory". :-)
http://www.symmetrymagazine.org/artic..."
Reminds me of Sheldon's costume, in "Big Bang Theory". :-)

http://www.nasa.gov/press-release/nas...

I wouldn't have a tatoo, perhaps just a T-shirt.
E = mc^2 though is just too well-known and boring. Maxwell's equations have their magic, at least in their most modern mathematical form, based on the rationalised SI units, if my memory serves me correctly. Of course not only do they describe electromagnetism, they were also ultimately the stimulus for the discovery of special relativity.
At MIT (I think) the atmospheric sciences department have a T-shirt with the fluid dynamics equations on a rotating sphere. For the uninitiated these are the dynamics equations used in climate change and weather prediction, i.e. they determine the wind and pressure in the atmosphere. The equations are accompanied by a quip along the lines of "And you thought you could understand the weather!"

There is no doubt of Archimedes prowess as a mathematician, scientist and engineer. However, the article indicates without evidence that he discovered infinitesimals. I very much doubt that this is true. You have for example Xeno's paradox about a runner (Achilles) not being able to catch a tortoise who is given a head (or shell start!) in a foot race. This indicates that the Greeks in general did not understand calculus, or the mathematics of infinitesimals.
Instead, calculus was invented independently by Newton and Leibniz in the 17th century.
By the way, I have always thought it really tacky in movies when some person (deemed clever) is capable of doing calculus! As if calculus was any more difficult than any other branch of mathematics. Look out for it if you've not noticed it. This is usually only high school calculus anyway which just follows simple rules. Serious calculus is about co- and contra-variant vectors and tensors which allow the description of curved space in General Relativity. Now we're smoking!
Another thing in movies (especially American ones) is that all classical music is compared to Mozart. It's the only composer movie directors have heard of. Of course Mozart was indeed a musical genius for his time, but his music was the popular music of the time in some ways.
Books mentioned in this topic
What If?: Serious Scientific Answers to Absurd Hypothetical Questions (other topics)What If?: Serious Scientific Answers to Absurd Hypothetical Questions (other topics)
What If?: Serious Scientific Answers to Absurd Hypothetical Questions (other topics)
mycellium running: how mushrooms can help save the world (other topics)
The Audubon Society Field Guide to North American Mushrooms (other topics)