18 7 / 2014

mt-otsukimi-square:

fahrenheit is just more precise in the ranges of human comfort. that was highlighted to me by that polar bear thing yesterday. twenty degrees in fahrenheit is the difference between cool and cold. at 60 degrees fahrenheit you’ll know to maybe wear a light long sleeved shirt and 40 degrees you know…

I guess it’s just that I think that way because using fahrenheit/Celsius makes problems a lot more difficult as opposed to kelvin.

Like, all the good formulas use Kelvin, and if I had my way we’d use it for comfort too ¯\_(ツ)_/¯

18 7 / 2014

mt-otsukimi-square:

I would 5ever argue that Celsius is a more effective measure of temperature for scientific purposes while Fahrenheit is an infinitely better measure for human comfort

C-E-L-S-I-U-S? That’s a funny way of spelling Kelvin.

18 7 / 2014

Anonymous said: Hey Shychemist. I've been following your blog for awhile and I want to bring up something that seems dated but nonetheless holds to be accurate today. I feel like the girls who consider themselves to be on the science side of tumblr to be horribly mistaken. It's statistically proven that women applicants struggle to get into stem doctorate programs, and rightfully so, they don't belong there. examples- atomic-o-licious, brainsx , adventuresinchemistry, i can't fit anymore but you get it

muchtoofullofsand:

hannahoort:

astropheminism:

nonlinearfluctuations:

chemistry-of-chaos:

dinostuck:

scientistsarepeopletoo:

adventuresinchemistry:

smilesandvials:

shychemist:

It doesn’t seem dated, your attitude is dated. This is the 21st century.

Women deserve to be in STEM programs just as much as men. I’d wager they deserve to succeed in the Sciences even more than men because of the sexism and misogyny they experience.

They struggle to get in because they’re the minority, and a lot of people who could admit them are sexist (regardless of gender) because of the society they grew up in. Its not through any intellectual weakness. These women are amazing and just as smart as the men in their fields.

You have no right to say these things to these amazing women, many of whom I consider to be friends.

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Wow. That seems like really fucking wrong. And offensive.
And I would love to take some more time out of my day to be pissed about it.
But…
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It seems that I have a lot of fucking science to do. 
So, uh, screw that.
If anybody needs me, me and my lady bits will be getting some fucking science done.

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I’m oddly excited to have been name checked by this shitty anon. Because it means that the very fact that I got into an Ivy League, top 15 science PhD program (where I fucking belong) is a giant fuck you to shitty anon. Also, shitty anons make Lewis sad. Because Lewis is a feminists science hippo.

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imageBest way for me to deal with shitty nonnies who think women can’t do science? DO MORE SCIENCE!!!! MWAHAHAHA

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Crap, I’m a woman biologist. I’d go get another career but I have a groundbreaking thesis on rapid evolution of reproductive isolation between seed beetle populations to finish. 

I’m not a well-known tumblr scientist…but I am a scientist all the same. And while I could probably obtain a more gender-appropriate occupation… I’m pretty content with the fact I’m an atmospheric chemist Additionally, I am also one of the few women who have managed to be selected to intern at NASA’s airborne research program. 

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Do I not deserve a place in the STEM fields, anon? 

Hey ladies! Mind if some physicists join in?

At the CERN visiting the CMS part of the LHC where were were working for 8 months on both computational and experimental work:

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Presenting our research at a conference on Physics of Living Systems:
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And visiting the Wind Tunnel experiment after presenting our research at Max Planck Institute at a Advances in Cardiac Dynamics Workshop

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Oh, me? What do I do? I try to understand why superbursts happen in neutron stars! This is important because: they shouldn’t happen but they do. And the implications could be astoundingly helpful for things like, oh I don’t know, nuclear fusion.

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Oh, just me, at a conference after presenting this:

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"don’t belong there"?! excuse you! 
Im not a science tumblr but i am a girl and a geologist so i kinda prove you wrong…?

In the Sorbas Basin finding fossilised bird trackways and fossilised rain drops
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Using HCl to dissolve solnhofen plattenkalk (limestones) to make plastic copies of exceptional fossils  

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On board the HMS Discovery, a state of the art scientific ship which anchors at the NOC (national oceanography centre Southampton)

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Doing some geological mapping and fieldwork in Ingleton Yorkshire

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So yeh anon, you’re wrong and very very very outdated in your opinions 

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Sorry, anon:  I’d love to stay and chat, but I’m afraid I’m too busy living in the future.

15 7 / 2014

peppapigvevo:

freshest-tittymilk:

elegantly-tasteless:

WHY NOBODY TELL ME BOUT THE CURLS ONE WHEN MY ASS WAS STRUGGLING THROUGH MATH UGH

Can i get the name to this???

Cheating level: Naruto

Fucking Ochem

(Source: vagabondedlife, via gigglesandanixi)

14 7 / 2014

dglsplsblg:

thinksquad:

A British company has produced a “strange, alien” material so black that it absorbs all but 0.035 per cent of visual light, setting a new world record. To stare at the “super black” coating made of carbon nanotubes – each 10,000 times thinner than a human hair – is an odd experience. It is so dark that the human eye cannot understand what it is seeing. Shapes and contours are lost, leaving nothing but an apparent abyss.
If it was used to make one of Chanel’s little black dresses, the wearer’s head and limbs might appear to float incorporeally around a dress-shaped hole.
Actual applications are more serious, enabling astronomical cameras, telescopes and infrared scanning systems to function more effectively. Then there are the military uses that the material’s maker, Surrey NanoSystems, is not allowed to discuss.
The nanotube material, named Vantablack, has been grown on sheets of aluminium foil by the Newhaven-based company. While the sheets may be crumpled into miniature hills and valleys, this landscape disappears on areas covered by it.
"You expect to see the hills and all you can see … it’s like black, like a hole, like there’s nothing there. It just looks so strange," said Ben Jensen, the firm’s chief technical officer.
Asked about the prospect of a little black dress, he said it would be “very expensive” – the cost of the material is one of the things he was unable to reveal.
"You would lose all features of the dress. It would just be something black passing through," he said.
Vantablack, which was described in the journal Optics Express and will be launched at the Farnborough International Airshow this week, works by packing together a field of nanotubes, like incredibly thin drinking straws. These are so tiny that light particles cannot get into them, although they can pass into the gaps between. Once there, however, all but a tiny remnant of the light bounces around until it is absorbed.
Vantablack’s practical uses include calibrating cameras used to take photographs of the oldest objects in the universe. This has to be done by pointing the camera at something as black as possible.
It also has “virtually undetectable levels of outgassing and particle fallout”, which can contaminate the most sensitive imaging systems. The material conducts heat seven and a half times more effectively than copper and has 10 times the tensile strength of steel.
Stephen Westland, professor of colour science and technology at Leeds University, said traditional black was actually a colour of light and scientists were now pushing it to something out of this world.
"Many people think black is the absence of light. I totally disagree with that. Unless you are looking at a black hole, nobody has actually seen something which has no light," he said. "These new materials, they are pretty much as black as we can get, almost as close to a black hole as we could imagine."
http://www.independent.co.uk/news/science/blackest-is-the-new-black-scientists-have-developed-a-material-so-dark-that-you-cant-see-it-9602504.html

o…k…?

dglsplsblg:

thinksquad:

A British company has produced a “strange, alien” material so black that it absorbs all but 0.035 per cent of visual light, setting a new world record. To stare at the “super black” coating made of carbon nanotubes – each 10,000 times thinner than a human hair – is an odd experience. It is so dark that the human eye cannot understand what it is seeing. Shapes and contours are lost, leaving nothing but an apparent abyss.

If it was used to make one of Chanel’s little black dresses, the wearer’s head and limbs might appear to float incorporeally around a dress-shaped hole.

Actual applications are more serious, enabling astronomical cameras, telescopes and infrared scanning systems to function more effectively. Then there are the military uses that the material’s maker, Surrey NanoSystems, is not allowed to discuss.

The nanotube material, named Vantablack, has been grown on sheets of aluminium foil by the Newhaven-based company. While the sheets may be crumpled into miniature hills and valleys, this landscape disappears on areas covered by it.

"You expect to see the hills and all you can see … it’s like black, like a hole, like there’s nothing there. It just looks so strange," said Ben Jensen, the firm’s chief technical officer.

Asked about the prospect of a little black dress, he said it would be “very expensive” – the cost of the material is one of the things he was unable to reveal.

"You would lose all features of the dress. It would just be something black passing through," he said.

Vantablack, which was described in the journal Optics Express and will be launched at the Farnborough International Airshow this week, works by packing together a field of nanotubes, like incredibly thin drinking straws. These are so tiny that light particles cannot get into them, although they can pass into the gaps between. Once there, however, all but a tiny remnant of the light bounces around until it is absorbed.

Vantablack’s practical uses include calibrating cameras used to take photographs of the oldest objects in the universe. This has to be done by pointing the camera at something as black as possible.

It also has “virtually undetectable levels of outgassing and particle fallout”, which can contaminate the most sensitive imaging systems. The material conducts heat seven and a half times more effectively than copper and has 10 times the tensile strength of steel.

Stephen Westland, professor of colour science and technology at Leeds University, said traditional black was actually a colour of light and scientists were now pushing it to something out of this world.

"Many people think black is the absence of light. I totally disagree with that. Unless you are looking at a black hole, nobody has actually seen something which has no light," he said. "These new materials, they are pretty much as black as we can get, almost as close to a black hole as we could imagine."

http://www.independent.co.uk/news/science/blackest-is-the-new-black-scientists-have-developed-a-material-so-dark-that-you-cant-see-it-9602504.html

o…k…?

(via whatamolecularworld)

12 7 / 2014

ptolemy2:

A distillation column is much like a flash drum as it is meant to separate liquid/vapor at a certain temperature.  The difference depends on what type of distillation and what you want to do with your input. Azotropic, batch, extraction, fractional freeze and steam distillation are all different types of distillation, but all have a common theme of trays. (other then lab distillation which separates products by boiling one after the other) The trays improve the purification of the chemicals, but a minimum number of trays are needed first.

Trays can be calculated in 2 was the McCabe-Thiele method which is the graph of the molar ratio of the products and plots the vapor/liquid equilibrium line on the chart, the number of stairs in between the two lines shows how many trays are needed to purify the compound.  

The second method is the frenske equation, which is a direct calculation of the number of trays which comes from there derivation of the concentrations in the vapor and liquid phase. 

Another thing to talk about is the top reflux and bottom reboiler. The reboiler is vital to any distillation column, and provides the heat to the column. There are many different types and can be found either inside the distillation column, or outgoing of the distillation column.  It acts as the main heat source and heats the pooling liquid at the bottom.  The liquid can usually be set to the bbubble point of the heaviest compound, as it boils off the other components faster, and the heaviest is most likely to come back.  At the top of the column is the reflux. The reflux temperature is calculated by the dew point of the lightest compound and is to ensure that all of the compound comes out of the column. 

Keep in mind that the pressure inside a column changes as you go up the column, so it’s a bit more tricky to calculate bubble point. 

(via ptolemy2)

09 7 / 2014

Nitrogen undergoing several phase changes (liquid to solid to a different solid phase) under a near-vacuum

08 7 / 2014

blakedpotata:

​when your chemistry teacher walks by during a lab that’s going horribly

blakedpotata:

​when your chemistry teacher walks by during a lab that’s going horribly

(via passthechloroform)

23 6 / 2014

If I had my own personal genie who granted me a near-unlimited number of reasonable wishes, one of my low-priority wishes would be to be able to smell any chemical without enduring any harm. 

I think that the ‘personality’ of a chemical is defined principally by its reactivity, but this is often difficult to survey accurately - like the true nature of a person’s character. Smells, on the other hand, are like first impressions. They give you some small idea of what you’re working with, even if that impression isn’t always accurate.

17 6 / 2014

damitr:

Acid Base Indicators: A graphic view

damitr:

Acid Base Indicators: A graphic view

(via centralscience)