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”.
Heartwarming Tearjerker of the Day: Moore Tornado Survivor Finds Her Dog in Rubble
This morning, Moore, Oklahoma resident Barbara Garcia was in the middle of an interview with CBS News about losing her home and her beloved companion dog to the deadly tornado, when something miraculous unfolded right in front of them and the viewers at home (starting at 1:32). Just try not to tear up.
Here’s the thing. Men in our culture have been socialized to believe that their opinions on women’s appearance matter a lot. Not all men buy into this, of course, but many do. Some seem incapable of entertaining the notion that not everything women do with their appearance is for men to look at. This is why men’s response to women discussing stifling beauty norms is so often something like “But I actually like small boobs!” and “But I actually like my women on the heavier side, if you know what I mean!” They don’t realize that their individual opinion on women’s appearance doesn’t matter in this context, and that while it might be reassuring for some women to know that there are indeed men who find them fuckable, that’s not the point of the discussion.
Women, too, have been socialized to believe that the ultimate arbiters of their appearance are men, that anything they do with their appearance is or should be “for men.” That’s why women’s magazines trip over themselves to offer up advice on “what he wants to see you wearing” and “what men think of these current fashion trends” and “wow him with these new hairstyles.” While women can and do judge each other’s appearance harshly, many of us grew up being told by mothers, sisters, and female strangers that we’ll never “get a man” or “keep a man” unless we do X or lose some fat from Y, unless we moisturize//trim/shave/push up/hide/show/”flatter”/paint/dye/exfoliate/pierce/surgically alter this or that.
That’s also why when a woman wears revealing clothes, it’s okay, in our society, to assume that she’s “looking for attention” or that she’s a slut and wants to sleep with a bunch of guys. Because why else would a woman wear revealing clothes if not for the benefit of men and to communicate her sexual availability to them, right? It can’t possibly have anything to do with the fact that it’s hot out or it’s more comfortable or she likes how she looks in it or everything else is in the laundry or she wants to get a tan or maybe she likes women and wants attention from them, not from men?
The result of all this is that many men, even kind and well-meaning men, believe, however subconsciously, that women’s bodies are for them. They are for them to look at, for them to pass judgment on, for them to bless with a compliment if they deign to do so. They are not for women to enjoy, take pride in, love, accept, explore, show off, or hide as they please. They are for men and their pleasure.
Today Sesame Workshop, the nonprofit educational organization behind Sesame Street, announced a multi-year partnership with Teaching Strategies, the educational company that publishes The Creative Curriculum and Teaching Strategies GOLD.