NASA spin-off technologies find their way into our lives in unexpected ways. Shock-absorbing memory squeezed its way into Tempur-Pedic mattresses, football helmet padding, shoe insoles, hospital beds, prosthetics, cars, amusement parks and modern art, while an invention designed to decrease airplane drag made a huge splash in the competitive swimming arena. Find out how as I answer the question…
Why did NASA invent the ribbed swimsuit?
Category Archives: Physics
No ordinary glass of water
Grade schools teach that there are three or four states of matter—solid, liquid, gas and possibly plasma. Nature is much fuzzier than that, however. Depending who you ask, there may be more than a dozen states of matter, along with numerous substates such as glass.
Yes, glass. Scientifically speaking, glass is a highly viscous, noncrystalline substate of matter. It is like a liquid that cools without becoming crystalline. Our everyday silica glass is but one example; many substances, including metals, become glassy under the right conditions.
Physical chemists have struggled for decades to crack the true nature of glass and understand what happens at the transition to and from the glassy state. In 1995, Nobel laureate Philip Anderson called it the “deepest and most interesting unsolved problem in solid state theory.” Now, C. Austen Angell, a chemistry professor at Arizona State University believes he has translated the Rosetta Stone of glassy substances: water.
A glassy riddle: solving the mystery of water glass
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• Angell helps solve mystery of ‘glassy’ water
Spin control: reading the quantum bit
Some days, I feel like I’m living in the future. Then I remember that I don’t have a flying car, a hyperintelligent monkey sidekick or a quantum computer. Granted, I’ve always suspected a flying car would be a terrible idea (and the less said about the monkey, the better), but I still want my iQuantum. So, what’s the hold up?
Quantum computing is one of those ideas that has enormous potential but is so cutting-edge that even its most basic aspects, like storing and reading data, require a large assortment of people with advanced degrees. Recently, two researchers worked out a way to read quantum states using entanglement, the “spooky action at a distance” that links two quantum particles under certain conditions. The method, which they hit upon while exploring electron-electron interactions, could solve the problem of reading quantum bits (aka “qubits”) once and for all.
Nanoionic memory: Vive la resistance
For some time now, conventional computer memory has been heading toward a crunch—a physical limit of how much storage can be crammed into a space before it is overwhelmed by heat and power problems. Generally, researchers have tried to avert this heat death in two ways: leapfrogging to the next generation of memory or refining current memory.
Researchers at Arizona State University’s Center for Applied Nanoionics (CANi) have combined the two approaches to create new memory that amps up performance while remaining compatible with today’s devices. CANi also used nanoionics (a technique for moving tiny bits of matter around on a chip) to overcome the limitations of conventional electronics: Instead of moving electrons among ions, nanoionics moves the ions themselves.
When searching for early galaxies, it pays to look twice
Using NASA’s Hubble and Spitzer Space Telescopes, an international team of astronomers have found nine of the smallest, faintest, most compact galaxies ever observed in the early universe–the building blocks of today’s larger, older galaxies. Composed of millions of brilliant blue stars, each infantile galaxy is one-hundredth to one-thousandth as large as our Milky Way galaxy. They formed about 12.5 billion years ago – just 1 billion years after the “Big Bang.”
Such galaxies are consistent with the conventional model of galactic formation, which holds that larger galaxies are formed when younger, smaller, less-massive galaxies merge. The sighting thus offers some much-needed support for the “hierarchical model,” which has become ever more contentious in recent years.