PASADENA, Calf. — The true identity of centaurs, the small celestial bodies orbiting the sun between Jupiter and Neptune, is one of the enduring mysteries of astrophysics. Are they asteroids or comets? A new study of observations from NASA’s Wide-field Infrared Survey Explorer (WISE) finds most centaurs are comets.
Until now, astronomers were not certain whether centaurs are asteroids flung out from the inner solar system or comets traveling in toward the sun from afar. Because of their dual nature, they take their name from the creature in Greek mythology whose head and torso are human and legs are those of a horse. (more…)
In awarding Yale’s George Daniel Mostow its 2013 Wolf Foundation Prize in mathematics — one of the field’s premier global awards — the foundation offered this crisp assessment: “Few mathematicians,” it said, “can compete with the breadth, depth, and originality of his works.”
Here Mostow, an emeritus professor since 1998, talks about the English teacher who led him to a life in math, the pleasure of family, high-definition opera, and the Nth dimension — as well as the “eureka!” moment at a New Haven stoplight that secured him a place in the history of geometry.
When did it dawn on you that you wanted to be a professional mathematician?
In high school, mathematics was my favorite subject. I especially enjoyed challenging problems. But I did not know that mathematics was a profession. I am indebted to my high school English teacher who, in my senior year, called me up to his desk to ask about my career plans, and told me that his brother was a mathematician. I decided then and there that mathematics was for me.(more…)
A new technology is being deployed by U.S. Geological Survey scientists this weekend to map urban flooding caused by Hurricane Isaac. Called “terrestrial lidar,” or “T-lidar”, this new capability will enable scientists to collect highly detailed information in select population areas in Louisiana, Mississippi, and Alabama where the hurricane had the greatest impact.
The portable instrument allows scientists to quickly generate 3-D maps of buildings, dams, levees and other structures, and can show areas of storm damage as well. In a four-to-five minute scan, the instrument collects millions of topographic data points in a full 360-degree view to quickly produce highly accurate topographic information and can map areas up to two-thirds of a mile away. (more…)
Children who are skilled in understanding how shapes fit together to make recognizable objects also have an advantage when it comes to learning the number line and solving math problems, research at the University of Chicago shows.
The work is further evidence of the value of providing young children with early opportunities in spatial learning, which contributes to their ability to mentally manipulate objects and understand spatial relationships, which are important in a wide range of tasks, including reading maps and graphs and understanding diagrams showing how to put things together. Those skills also have been shown to be important in the Science, Technology, Engineering and Mathematics (STEM) fields. (more…)
A study aided by UA microbiologist Charles Gerba finds that office kitchens and break rooms are frequent hot spots for bacteria.
If you thought the restroom was the epicenter of workplace germs, you don’t want to know about office break rooms and kitchens.
The place where U.S. workers eat and prepare their lunches topped the list of office germ hot spots, with the sink and microwave door handles found to be the dirtiest surfaces touched by office workers on a daily basis. (more…)
COLUMBUS, Ohio – New research challenges the conventional thinking that young children use language just as adults do to help classify and understand objects in the world around them.
In a new study involving 4- to 5-year-old children, researchers found that the labels adults use to classify items – words like “dog” or “pencil” – don’t have the same ability to influence the thinking of children. (more…)
