January 2012
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“An expanded form of an Address by Albert Einstein to the Prussian Academy of...”
– Einstein - Geometry and Expansion
Calc 3D Plotter →
mathmenow:
This is the applet thing we used in Calc 3 at ASU to plot in 3D.
Your age on other worlds →
Electron Holography Produces First Image of a... →
lonecenturion:
Previously, if you wanted to look at a single-chained protein, you needed X-rays. This was bad news for biologists, whose lively samples were destroyed or damaged by such intense light. Now, by exploiting the short de Broglie wavelength of slow electrons, you can finally look at single proteins with sub-nanometer resolution. This is good news for disease fighters and medicine...
Every Model Of The Universe Has A Beginning, by... →
visualoop:
Via
WARNING! tumblr VIRUS!
pinkprincess17:
iwishihadametalheart:
If you see this:
or This:
DON’T GIVE YOUR PASSWORD!!! DON’T CLICK ON THE LINK!!! It’s a virus!
Lots of people on my dash are already infected.
If you get infected you have to change your password and re-install your theme.
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Fast Decimals to Fractions - StumbleUpon →
What's a Second?
jtotheizzoe:
Random fact for today:
As a unit of time, a second used to be defined as
1/31,556,925.9747 of the length of the year 1900 at January 0
But is now defined as
“the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom”
So there ya go. It looks like this:
Langford pairings →
romulusetremus:
Caution: geeky!
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English names of the first 10000 powers of 10 -... →
1 tag
An Equation in Radicals →
