Photoset
Photoset

thecraftychemist:

ri-science:

Transformation of a supersaturated solution into solid crystals

It just takes one small nudge to spark the transformation of a seemingly stable liquid into a solid. The liquid – a supersaturated solution of sodium acetate – consists of water with more dissolved sodium acetate salt than can be stably sustained. Drop in a salt crystal and provide the kick needed to start the transformation into the more thermodynamically favourable solid state.

But if the solid state is more thermodynamically stable, why does it exist as a liquid at all? It’s to do with scale: the solution is only better off as a solid at the macroscopic scale – the scale of the whole solution. On a microscopic scale, the individual crystals are not thermodynamically favourable, so until you start it off with a salt crystal (which is, relatively, a huge disturbance), the transformation won’t begin.

Watch the full ‘Tales from the Prep Room’ film for more explanation, extra footage, and the curious problem we encountered when filming.

Yes, it’s also an exothermic reaction when it crystallizes - it’s often used in hand warmers.

(via lila-scientifique-tortue-de-mer)

Tags: gif science
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ri-science:

Teach children to ask questions, and they’ll teach themselves to become scientists.
ExpeRimental is our series of short films to encourage people to do simple science activities at home with their children.

ri-science:

Teach children to ask questions, and they’ll teach themselves to become scientists.

ExpeRimental is our series of short films to encourage people to do simple science activities at home with their children.

(via mistermxrquis)

Photoset

sagansense:

jtotheizzoe:

You guys like Saturn, right? Here’s a whole gallery of Saturn GIFs, from rings to moons, captured by the Cassini spacecraft. They’re part modern art and part science.

Next to the Voyager twins, I think Cassini might be the best satellite NASA ever launched. Certainly takes the best pictures. Tumblr’s own staceythinx  has an iPad app called Cassini HD that features even more photos, plus color, plus science.

(GIFs by framesandflames)

My favorite planet (so far). For more Saturnian wonder, explore Cassini Imaging Scientist Carolyn Porco’s TED Talks; discover what we’ve just learned about Saturn; and mark your calendars for one of the most astronomical IMAX films to ever grace the screens: In Saturn’s Rings!

(via starstuffblog)

Tags: gif science
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Tags: science
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spacecadet182 said: You said you have a love/hate relationship with the new Cosmos. I feel the same way, but I'd like to hear what you dislike about it.

kenobi-wan-obi:

fortune8one:

afro-dominicano:

Basically all the white washed history and same old white contributors to science. Which is ironic for a show that claims to want to inform about the cosmic perspective and diversity of life, yet they’re out here still presenting us the best of white scientists. Idk maybe it’s just the beginning and the poc contributors of science will be shown later on the show.. but I highly doubt that. It would be a pleasant surprise if they show at least more than one poc.

It doesn’t feel very inclusive, so far the only time you see poc is in these nomadic, early, primitive human scenarios. Where are the poc scientists of the west or the world that played a huge role in the progression of science as a whole? where are those stories? why am I only seeing the good things white men have done?

The show was even promoted as “shedding light on the scientists/astronomers that the original Cosmos didn’t have time for” but coincidentally it’s doing the same thing. White everywhere.

We’re really doing the race thing here? Then you miss the whole point of the show. Plus it’s LESS THAN 5 EPISODES IN!!

Everyone wants something to complain about. How about, if you’re an adult, the show may not entirely be for you but for the young potential scientists who don’t need to be fed biases about a show with the intention to inspire and encourage.

Hey-Seuss Christ!

Right got it, thank you, so basically misrepresentation is just a dumb old race thing I’m being annoying and naggy about and because this show is supposedly aimed for kids only it’s okay to present these kids with nothing but white guys cause that’s what science, inspiration and courage is all about.

yeah okay more like

I’ve been thinking the EXACT same thing ken.

It’s not just the straight up ignoring the scientific discoveries of people of color for me. Every time they talk about “our ancestors”, they always show some dirty white people with dreadlocks. That’s not my ancestors. 

It’s 2014. Even if you’re not Black, we all should know by now that life started in Africa. When he says “When our ancestors first looked up into the sky…” I don’t think I’m asking for much when in 2014 I expect to be seeing BLACK ancestors. 

While I do enjoy Cosmos, it’s white-washed, Eurocentric science and it’s hard to ignore. 

Copernicus helped whites discover that they weren’t the center of the universe………………….. cool. Now, can 2014 be the year when they realize they’re not the center of life on Earth either?? 

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fleshcoatedtechnology:


Scientists create sensor for night vision contact lenses

It may seem like the stuff from spy and superhero movies but scientists have created “the first room-temperature light detector that can sense the full infrared spectrum” which, according to researchers at the University of Michigan, can be made so thin that it can be easily stacked on night vision contact lenses.
Back in 2011 some speculated that Seal Team Six used night vision contact lenses in the operation that killed Osama Bin Laden. Those rumors were never substantiated, but this invention is very real…

[read more]

fleshcoatedtechnology:

Scientists create sensor for night vision contact lenses

It may seem like the stuff from spy and superhero movies but scientists have created “the first room-temperature light detector that can sense the full infrared spectrum” which, according to researchers at the University of Michigan, can be made so thin that it can be easily stacked on night vision contact lenses.

Back in 2011 some speculated that Seal Team Six used night vision contact lenses in the operation that killed Osama Bin Laden. Those rumors were never substantiated, but this invention is very real…

[read more]

(via afro-dominicano)

Tags: wow science
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To Understand Is To Perceive Patterns

(Source: afro-dominicano)

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This is gonna be GOOD, okay. Definitely watching tonight. 

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