Mathematics

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Researchers show that the Big Bang was followed by chaos

Seven years ago Northwestern University physicist Adilson E. Motter conjectured that the expansion of the universe at the time of the big bang was highly chaotic. Now he and a colleague have proven it using rigorous mathematical arguments.

Teaching the science of baseball

Teaching the science of baseball

How do gravity and drag affect a pitch? What's the best way to make a curveball break? And what will break more: a beach ball or a Wiffle Ball? Through MIT's Science of Baseball Program, a group of local middle school boys took to MIT's classrooms and fields this summer to find the answers to those questions.

Finding hidden variables

Finding hidden variables

The architect Mies van der Rohe is famous for promoting the slogan “less is more.” But if Venkat Chandrasekaran, a graduate student in the Department of Electrical Engineering and Computer Science, had a slogan for his own work, it might be “more is less.”

Helium could lead to more accurate temperature measurements

Helium could lead to more accurate temperature measurements

An international team led by Univ. of Delaware researchers reports new findings about helium that may lead to more accurate standards for how temperature and pressure are measured. The scientists provide a new theoretical computation of the force acting between a pair of helium atoms, referred to as “pair potential,” that is more accurate than any published to date.

Mathematicians solve 140-year-old Boltzmann equation

Two Univ. of Pennsylvania mathematicians have found solutions to a 140-year-old, 7-dimensional equation that were not known to exist for more than a century despite its widespread use in modeling the behavior of gases.

Math genius Grigory Perelman may say nyet to $1 million prize

In 2000, the Clay Mathematics Institute identified seven math problems worthy of a $1 million Millennium Prize. Grigory Perelman, a Russian recluse, is the only person to solve one: the Poincare conjecture, a geometry involving four dimensions. He will be offered the money, but he is unsure about accepting it.

Answers inside the enigmatic E8?

Answers inside the enigmatic E8?

In November 2007, surfer physicist Garrett Lisi published “An Exceptionally Simple Theory of Everything?” which proposed that the astoundingly complex and elegant E8 mathematical structure is the unifying “force” for everything. A rock-climbing mathematician, however, has recently used linear algebra and theorems to prove that Lisi’s theory does not hold water.

The Mathworks to host Energy Virtual Conference

Customers will be showcasing how they’ve used The Mathworks software—including MATLAB and Simulink—to arrive at solutions in a number of energy-related fields during an online conference and exhibition on Thursday, March 25.

Influencing stem-cell development with geometry

Univ. of Chicago scientists have successfully used geometrically patterned surfaces to influence the development of stem cells. The new approach is a departure from that of many stem-cell biologists, who focus instead on uncovering the role of proteins in controlling the fate of stem cells.

Testing century-old calculations

Testing century-old calculations

Calculations are fine, but seeing is believing. That's the thought behind a new paper by Rice Univ. students who decided to put to the test calculations made more than a century ago.

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The irresistability of the end

The irresistability of the end

What is it about doomsday scenarios? Every once in a while, it seems, the general public can’t get enough of predictions about impending disaster. And the most recent spate of disaster ruminations seems more pervasive than ever.

Premature death notice

Premature death notice

Earlier this week, Wired editor Chris Anderson declared the death of the Web and the rise of everything else (on the Internet). It was a bit like twittering the death of your favorite celebrity on Twitter, except in this case it’s the one loved by billions.

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CC Radio - Episode 46

Post-Doctoral Fellow at CC Department of Bioethics Part of Academy Award-Nominated Documentary. For transcripts of this and other NIH Clinical Center podcasts, visit http://www.cc.nih.gov/podcast/

CC Radio - Episode 45

Clinical Center Studies Noninvasive Imaging of Heart Failure. For transcripts of this and other NIH Clinical Center podcasts, visit http://www.cc.nih.gov/podcast/

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Spindle company to adopt wireless maintenance system
Spindle company to adopt wireless maintenance system

GTI Spindle Technology is partnering with InCheck Technologies to demonstrate InSite – a new online wireless predictive maintenance system – at a conference at the International Manufacturing Technology Show in Chicago, Ill., Sept. 13-18. InSite provides data collection, storage, and processing facilities for condition and performance monitoring.

Small USB box provides plug-in modules, 200 kS-s and isolation

The DEWE-50-USB2-8 from Dewetron incorporates real plug-in signal conditioning modules for low and high voltages, strain, pressure, acceleration, sound, temperature, force, and more. It can be used in demanding high voltage environments safely.

Tools & Technology

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Fused silica capillary tubing
Fused silica capillary tubing

Delivering reliable operation in demanding conditions, Fiberguide Industries introduced its new line of fused silica capillary tubing.

High-temperature protective coatings

Aremco Products, Inc. offers the Corr-Paint line of protective coatings—suited for protecting metals, graphites, and refractories used in ovens, boilers, furnaces, heaters stacks, and heat exchangers to 2500°F.

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