Professional photography has been historically dominated by men, and in certain areas, we still see low representation of women (e.g. the number of women who won World Press Photo accolades). Photography has a rich history of prolific and significant photographers, but here is a short list of a few female photographers whose work you should know now.
What is Parallax?
As I said in the previous video, I was trying to find information on how to measure the distance to sun. And while learning about that topic I stumbled upon Parallax. I found it interesting enough to produce a video on it. I am sure you will love it. I tried to simplify it as much as possible. This video is Sec(c)!
The voice over in this video is provided by my friend Carol. Check her out on Twitter. @CSpencer_Morgan
via The Curious Engineer.
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Astrophotography from 1908 — 1919
These images were taken about 100 years ago. I can’t even describe how much respect I have for early astronomers.
Image courtesy: Yerkes Observatory, Royal Observatory of Greenwich, Mount Wilson Observatory
"This may look a little like the dried head of a poppy but is in fact the egg of a human head louse attached to a hair. Nits are the bane of many parents’ lives when they discover the telltale egg sacs, prompting rounds of tea-tree-oil shampoo, lice combs and nit lotion. This false-coloured scanning electron micrograph, by Kevin Mackenzie, of the egg (green) attached to a strand of human hair (brown) shows an area just 1.5 millimetres across."
This illustration is a montage of photographs, taken from Figure 4 of ‘Testing Turing’s Theory of Morphogenesis in Chemical Cells.’ Image: Seth Fraden
Alan Turing’s accomplishments in computer science are well known, but lesser known is his impact on biology and chemistry. In his only paper on biology, Turing proposed a theory of morphogenesis, or how identical copies of a single cell differentiate, for example, into an organism with arms and legs, a head and tail.
Now, 60 years after Turing’s death, researchers from Brandeis University and the University of Pittsburgh have provided the first experimental evidence that validates Turing’s theory in cell-like structures.
The team published their findings in the Proceedings of the National Academy of Sciences on Monday, March 10.
Turing was the first to offer an explanation of morphogenesis through chemistry. He theorized that identical biological cells differentiate, change shape and create patterns through a process called intercellular reaction-diffusion. In this model, a system of chemicals react with each other and diffuse across a space—say between cells in an embryo. These chemical reactions need an inhibitory agent, to suppress the reaction, and an excitatory agent, to activate the reaction. This chemical reaction, diffused across an embryo, will create patterns of chemically different cells.
Turing predicted six different patterns could arise from this model.
At Brandeis, Seth Fraden, professor of physics, and Irv Epstein, the Henry F. Fischbach Professor of Chemistry, created rings of synthetic, cell-like structures with activating and inhibiting chemical reactions to test Turing’s model. They observed all six patterns plus a seventh unpredicted by Turing.
Just as Turing theorized, the once identical structures—now chemically different—also began to change in size due to osmosis.
This research could impact not only the study of biological development, and how similar patterns form in nature, but materials science as well. Turing’s model could help grow soft robots with certain patterns and shapes.
More than anything, this research further validates Turing as a pioneer across many different fields, Fraden says. After cracking the German Enigma code, expediting the Allies’ victory in World War II, Turing was shamed and ostracized by the British government. He was convicted of homosexuality—a crime in 1950s England—and sentenced to chemical castration. He published “The Chemical Basis of Morphogenesis” shortly after his trial and killed himself less than two years later, in June 1954. He was 41 years old.
Thinnest-Possible LEDs Only 3 Atoms Thick
University of Washington scientists have built the thinnest-known LED that can be used as a source of light energy in electronics. The LED is based off of two-dimensional, flexible semiconductors, making it possible to stack or use in much smaller and more diverse applications than current technology allows.
“We are able to make the thinnest-possible LEDs, only three atoms thick yet mechanically strong. Such thin and foldable LEDs are critical for future portable and integrated electronic devices,” saidXiaodong Xu, a UW assistant professor in materials science and engineering and in physics…
“These are 10,000 times smaller than the thickness of a human hair, yet the light they emit can be seen by standard measurement equipment,” Ross said. “This is a huge leap of miniaturization of technology, and because it’s a semiconductor, you can do almost everything with it that is possible with existing, three-dimensional silicon technologies,” Ross said.
Despite a full century of scientific insights attesting to the antiquity of the earth, more than half of our neighbors believe that the entire cosmos was created six thousand years ago. This is, incidentally, about a thousand years after the Sumerians invented glue.
Game by E McNeill designed for the Oculus Rift which puts you in the position of a cyberpunk hacker - video embedded below:
The job is simple: break through the firewall and retrieve the data. But the net can be a dangerous place.
Built for virtual reality from the ground up, Darknet will release on PC/Mac/Linux as an exclusive launch title for the Oculus Rift VR headset.
You can find out more about the game here
photos of butterfly and moth wings taken by linden gledhil at seven to ten times life size.
"evolution is written on the wings of butterflies" - charles darwin
Seeing the microscopic wonder that is a butterfly’s wing always makes me think of Vladimir Nabokov, author and lepidopterist (and not necessarily in that order).
You’ll want to check out Nabokov’s butterfly sketches, whimsical fantasy species presented as gifts to his wife. And don’t miss his gorgeous butterfly-inspired poem, “On Discovering a Butterfly”.
Finally, don’t miss this great video from Smarter Every Day in which Destin goes full microscope on some butterfly scales. Beautiful stuff: