Posts tagged science

sciencecenter:

Scientists image detailed structure of a single molecule
This story is a bit dated, but the images the research team produced are still spectacular. First, the above image of pentacene was achieved with atomic force microscopy. The technique basically involves passing a nano-scale tip attached to a cantilever over the surface of whatever you want to image, to create a topographical map. That the research team could get images on the scale of one molecule is amazing. To do so, they had to keep the AFM under vacuum and at near-absolute zero temperatures. As you can see above, the carbon-carbon bonds are clearly visible, and even the hydrogens at each edge are alluded to.
As I was looking into this story, I found that the team did themselves one better - they imaged the electron orbitals of pentacene, using scanning tunneling microscopy - a technique that takes advantage of the quantum nature of electrons. They produced the below image. On the left are the images, and on the right are mathematical predictions for comparison:

It’s findings like this that make me seriously consider pursuing analytical chemistry in grad school.

This is a WOW thing.

sciencecenter:

Scientists image detailed structure of a single molecule

This story is a bit dated, but the images the research team produced are still spectacular. First, the above image of pentacene was achieved with atomic force microscopy. The technique basically involves passing a nano-scale tip attached to a cantilever over the surface of whatever you want to image, to create a topographical map. That the research team could get images on the scale of one molecule is amazing. To do so, they had to keep the AFM under vacuum and at near-absolute zero temperatures. As you can see above, the carbon-carbon bonds are clearly visible, and even the hydrogens at each edge are alluded to.

As I was looking into this story, I found that the team did themselves one better - they imaged the electron orbitals of pentacene, using scanning tunneling microscopy - a technique that takes advantage of the quantum nature of electrons. They produced the below image. On the left are the images, and on the right are mathematical predictions for comparison:

It’s findings like this that make me seriously consider pursuing analytical chemistry in grad school.

This is a WOW thing.

292 notes

Still busy moving, but I’ll gladly do a little Follow Fr…er, Monday. Everybody tune into Scientific Illustration’s Tumblr if you’re a lover of visual art at all. It’s brilliant stuff! Love it!

http://scientificillustration.tumblr.com/

sciencecenter:

The above is an extremely common criticism of evolution, and it sounds superficially plausible. How can we be sure about events that happened hundreds of millions or billions of years ago? The truth is that the tools of science are more than adequate to provide accurate answers about the past….

Ah, evolution and creation. The great debate of science vs. religion. I’m working on a piece tangentially related to this, so I might as well mention this excellent piece.

83 notes

ohscience:


Dark shadows help define craters on the face of the large asteroid Vesta, named for the Roman virgin goddess of hearth and home, in a picture released August 22.
NASA’s Dawn spacecraft snapped the shot from the satellite’s orbit around Vesta. The space rock is part of our solar system’s main asteroid belt, between the orbits of Mars and Jupiter. The massive asteroid is considered a protoplanet, a would-be planet whose growth was interrupted in infancy by the formation of Jupiter.

ohscience:

Dark shadows help define craters on the face of the large asteroid Vesta, named for the Roman virgin goddess of hearth and home, in a picture released August 22.

NASA’s Dawn spacecraft snapped the shot from the satellite’s orbit around Vesta. The space rock is part of our solar system’s main asteroid belt, between the orbits of Mars and Jupiter. The massive asteroid is considered a protoplanet, a would-be planet whose growth was interrupted in infancy by the formation of Jupiter.

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scipsy:

Hurricane Irene From the ISS

scipsy:

Hurricane Irene From the ISS

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mothernaturenetwork:

Giant ‘warrior wasp’ discovered with jaws longer than its legsThe wasp, discovered on the remote Indonesian island of Sulawesi, is being called the ‘Komodo dragon’ of the wasp family.

Bugs are cool.

mothernaturenetwork:

Giant ‘warrior wasp’ discovered with jaws longer than its legs
The wasp, discovered on the remote Indonesian island of Sulawesi, is being called the ‘Komodo dragon’ of the wasp family.

Bugs are cool.

291 notes

mothernaturenetwork:

Can phone carriers handle a natural disaster like a hurricane?Mobile cellular sites can be deployed to disaster-hit areas, but it can still take time for large scale networks to return after a disaster.

One more thing: everyone please stay safe this weekend. Never take these storms lightly.

mothernaturenetwork:

Can phone carriers handle a natural disaster like a hurricane?
Mobile cellular sites can be deployed to disaster-hit areas, but it can still take time for large scale networks to return after a disaster.

One more thing: everyone please stay safe this weekend. Never take these storms lightly.

42 notes

I had a longer post made for today, but I’m leaving it for more research and proofing. See, I’m busy moving into a city that’s in the path of Irene, so I’m running a bit like a chicken without a head. So instead, enjoy some awesome pictures of a supermassive black hole doing what supermassive things do best: sucking.

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sciencecenter:

Smithsonian.com - Rob Dunn

Natural selection acts by winnowing the individuals of each generation, sometimes clumsily, as old parts and genes are co-opted for new roles. As a result, all species inhabit bodies imperfect for the lives they live. Our own bodies are worse off than most simply…

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!!!
carlzimmer:

A fearsome worm shows how much Hollywood has left to learn about biodiversity. From FEI, an image-rich site I discovered through BoingBoing—who now have my eternal gratitude.
(via Electron Microscope Image of Hydorthermal Worm - FEI)

Someone call John Carpenter – the Thing’s loose again.

!!!

carlzimmer:

A fearsome worm shows how much Hollywood has left to learn about biodiversity. From FEI, an image-rich site I discovered through BoingBoing—who now have my eternal gratitude.

(via Electron Microscope Image of Hydorthermal Worm - FEI)

Someone call John Carpenter – the Thing’s loose again.

404 notes