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My megaladon tooth on top of my 100 lb golden retriever for size comparison

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The Size of a Nano

Just how small is a “nano?” In the International System of Units, the prefix “nano” means one-billionth, or 10-9; therefore one nanometer is one-billionth of a meter. It’s difficult to imagine just how small that is, so here are some examples:

A sheet of paper is about 100,000 nanometers thick

A strand of human DNA  is 2.5 nanometers in diameter

There are 25,400,000 nanometers in one inch

A human hair is approximately 80,000-100,000 nanometers wide

A single gold atom is about a third of a nanometer in diameter

On a comparative scale, if the diameter of a marble was one nanometer, then diameter of the Earth would be about one meter

One nanometer is about as long as your fingernail grows in one second

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Gulper Shark Fitted With A Microwave Tag Is Guided Back To The Depths By A Research Assistant

As Part Of A Research Program Investigating Sharks Living In The Bahamas

Photo Courtesy Of Save Our Seas Foundation

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Welp

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Lol and people are afraid of sharka today

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Tumblr

I dont understand this website

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Underwater photo contest winners include seal, shrimp

Winners from the 2013 Annual Underwater Photography Contest held by the University of Miami Rosenstiel School of Marine & Atmospheric Science epitomize the beautiful diversity of the open oceans.

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One of my favorites!

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I want to do this so badly :( (also Fiat qued (queued?) ((Qd?)) pictures)

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Hhhheeeelll yeeeaaahh

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Walter white?

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Walter white?

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Walter white?

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X-ray vision tracks lightning bursts

Blink and you’ve missed it. Researchers in the US have captured the world’s first X-ray images of lightning, by creating a special camera that can capture radiation at 10 million frames per second. They presented their new findings at the American Geophysical Union (AGU) Fall Meeting in San Francisco and they say that this new view of lightning could help to solve some of the mysteries of this spectacular natural phenomenon.

The research was carried out at the International Center for Lightning Research and Testing, located in Florida. It is one of the few sites in world where lightning is initiated and studied under controlled conditions. By firing rockets with trailing wires into thunder clouds, scientists are able to generate electric fields that are large enough to trigger bolts of lightning, which then propagate back down towards the rocket launch tower.

Joseph Dwyer and colleagues at the Florida Institute of Technology became interested in the fact that lightning emits X-rays as it propagates through the air, a phenomenon that was only noted in the past decade. But given that X-ray sources in lightning travel through the Earth’s atmosphere at velocities approaching the speed of light, it is difficult to catch them on camera before they disappear. In addition, they cannot be imaged with standard mirrors and lenses because huge amounts of material are required to prevent X-rays and gamma rays from entering through the sides of a camera.

Dwyer’s team has created a customized camera that has 30 detectors made from a combination of sodium iodide and photomultiplier tubes, each measuring 3 × 3 inch. The device, which is approximately the size of a standard refrigerator, is also equipped with a 3 inch pinhole aperture, and can record X-rays at 10 million frames per second. “This is actually a very old technique for making images, like that seen in a camera obscura,” Dwyer says.

During July and August this year, Dwyer’s team studied four rocket-triggered lightning flashes at the Florida test site. Each flash lasted for approximately two seconds and the resulting sequences of images revealed that X-rays emerged primarily from the vicinity of the lightning tip as it propagated towards the Earth. As the lightning crashed into the control tower it also triggered large bursts of gamma radiation, which were also captured by the camera.

“For the first time we’re catching a glimpse of lightning in the X-ray emission,” says Dwyer. “We’re seeing lightning as Superman would see it with his X-ray vision”.

Credit: James Dacey/physicsworld.com

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Me and rachel starr lol

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Me and some other girl