When reality television star and fashion blogger Lauren Conrad was asked what her “favorite position” was on a live radio program a while back, the women listening held their breath. Although we take great pride in the work that we do, most of us could relate to being undermined and belittled publicly at work. When Conrad cleverly retorted “CEO,” it was hard not to aggressively high-five our laptop and mobile devices. The words “hell” and “yeah” could be heard all across the nation.
List of things I’ve cut myself with as a chef:
-plastic take out container
-a piece of fucking bread
List of things I’ve not cut myself with as a chef:
-a fucking knife
Filming a rainbow when suddenly.
what the fuck
The gays are angry
it is time
we have struck.
My friend is the best. She sends me such gems.
WE WON’T GO QUIETLY. THE LEGION CAN COUNT ON THAT.
Prime numbers are like atoms. They are the building blocks of all integers. Every integer is either itself a prime or the product of primes. For example, 11 is a prime; 12 is the product of the primes 2, 2, and 3; 13 is a prime; 14 is the product of the primes 2 and 7; 15 is the product of the primes 3 and 5; and so on. Some 2,300 years ago, in proposition 20 of Book IX of his Elements, Euclid gave a proof “straight from the book” that the supply of primes is inexhaustible.
Assume, said Euclid, that there is a finite number of primes. Then one of them, call it P, will be the largest. Now consider the number Q, larger than P, that is equal to the product of the consecutive whole numbers from 2 to P plus the number 1. In other words, Q = (2 x 3 x 4 … x P) + 1.
From the form of the number Q, it is obvious that no integer from 2 to P divides evenly into it; each division would leave a remainder of 1. If Q is not prime, it must be evenly divisible by some prime larger than P. On the other hand, if Q is prime, Q itself is a prime larger than P.
Either possibility implies the existence of a prime larger than the assumed largest prime P. This means, of course, that the concept of “the largest prime” is a fiction. But if there’s no such beast, the number of primes must be infinite. “Euclid alone,” wrote Edna St. Vincent Millay, “has looked upon Beauty bare.”❞
Paul Hoffman (and Euclid) in The Man Who Loved Only Numbers: The Story of Paul Erdős and the Search for Mathematical Truth.
if you don’t think this is the coolest fucking thing idek what to say
Image: Ninghui Shi/Wikimedia Commons.
As if the task of explaining the details of the ‘normal’ C3 Calvin Cycle of photosynthesis (P/S) to our students isn’t hard enough, we also need to appraise them of C4 P/S – with its spatial separation of initial CO2 fixation into organic acids in mesophyll cells and its subsequent release and re-fixation via the enzyme Rubisco(ribulose-1,5-bisphosphate…
Track: 1 2 3 4 (cover)
Artist: Caleb Galbreath
I got really bored today and thought I’d record this song :] I do requests, so send me a message if you’d like me to sing you a tune!
HANDS DOWN THE BEST SCENE OF ANY TV SHOW EVER
what if you woke up with amnesia and all you could remember was your tumblr password and you had to discover who you were based off your posts
“wow I sure had a thing for boats”
this is the most perfect thing on tumblr omfg
Chlorination with thionyl chloride.
Thionyl chloride (IUPAC: sulfurous dichloride) is a really agressive reagent, it reacts with everything what contains even a little water, especially with your hands.
During the reaction with water (SOCl2 + H2O —> 2 HCl + SO2) it produces hydrogen chloride and sulfur dioxide what are not the best for your health.
Besides of these properties, it is a pretty useful reagent, since it reacts pretty well and could be removed easily since it’s low boiling point (74.6 °C). In organic chemistry it is most often used to prepare alkyl chlorides from alkyl alcohols (RCH2OH + SOCl2 —> RCH2Cl + HCl + SO2) and acyl chlorides from carboxylic acids (RCO2H + SOCl2 —> RC(O)Cl + HCl + SO2). Both reaction produces a lot toxic fumes, so it should be used under a well working fume hood.