Physics tip sheet #21 July 10, 2002
...ion from which UHECRs come and the distribution of objects within our galaxy shows a correlation between UHECRs and spun-up pulsars (pulsars spinning at high speeds) that is better than chance should allow. Although this does not imply pulsars are the source of UHECRs, it provides impetus not to dismiss gala...Ambitious plan to give sight to the blind
...to the point where he or she can read, move around objects in the house, and do basic household chores," says...ugh to read large print and to distinguish between objects in a room. "Compared to the elegance of the original biological design, what we're doing is extremel......a novel explanation for how we recall memories for objects that surround us, suggesting that objects occur in your memory by uniting the different brain regions that make up various parts of the object...Tiny, magnetic spheres may help overcome gene therapy hurdle
...dure, reminiscent of the toy that moves magnetized objects beneath transparent plastic, could someday evolve into a treatment that would enable doctors to guide corrective gene-containing microspheres injected into a patient with magnets placed outside the skin. Such procedures, could, for example, replace i...Study reveals clues to brain development
...strollers, cribs, and bassinets are outfitted with objects sharply patterned in black and white or contrasting primary colors. Far fewer studies have investigated precisely how visual stimulation drives the formation of new neuronal structures in the brain. Now, researchers at Cold Spring Harbor Laboratory h...Brain's method of creating mental images differs with the source of cues received
...added. "Because people can't look at two different objects at the same time, the brain can more safely discard information from individual visual cues after they've been combined into one representation. The brain is efficient in that it doesn't waste energy maintaining information that it will not likely ne...Toy choice among boys, girls a matter of monkey business
...l cues that attract males or females to particular objects such as toys." In the experiment, Alexander says, ...indings suggests that there are certain aspects of objects that appeal to the specific sexes and that these aspects may relate to traditional male and female f...Two Max Planck researchers recieve the Louis-Jeantet Prize for Medicine 2003
...hod also uses the electron microscope but analyses objects in a rapidly frozen state that preserves their structure. Multiple images are recorded from different angles, which are subsequently combined to generate three-dimensional images by computers. Previously, Wolfgang Baumeister made essential contributi...Researchers decipher cause of parasites worldwide spread
...pores from contaminated soil, water, cat litter or objects that have had contact with cat feces. The infection also can be acquired from eating raw or partially cooked meat, especially chicken, pork, lamb or venison. While eating infected meat easily spreads Toxoplasma from animal to animal, related parasite...Dad's coochy coos leave baby guessing
...child, or to warn them to stay away from dangerous objects such as sharp instruments or electrical appliances. When the program analysed the acoustic properties of nearly 700 excerpts of speech, it correctly distinguished between approving or disapproving comments 80 per cent of the time. But to the research...Discovery of size changes of Bacillus spores may lead to simpler, faster anthrax detector
...th physicists had experience measuring microscopic objects during more than a decade spent searching for the minuscule tracks of cosmic rays in special glasses and of interplanetary dust grains in aerogels, and more recently, searching for unusual microbes in Greenland and Antarctic ice. In researching what ...Listen up! Infrasound is talking
...ling tornadoes, erupting volcanoes and approaching objects from space. The impact of this current "Infrasound Renaissance" will continue to grow as more researchers discover how these inaudible sound waves can benefit their research. Large atmospheric explosions, natural and anthropogenic, generate infrasoun...Early Mars: Warm enough to melt water?
... was cold most of the time and warmed up only when objects impacted the planet. The impacts would warm the atmosphere and melt water trapped in underground and surface ice, causing rivers to flow and cutting the valleys that rival Arizona's Grand Canyon. "I do not think this is right," said Dr. James F. K...From da Vinci to Monet: Understanding how artists can manipulate the human visual system
...ement of Science (AAAS) Annual Meeting. What makes objects appear in certain ways, in certain situations? Liv...white photos (grayscales), so in a picture, if two objects are different colors, but the same luminance, they will both appear the same shade of gray. That i...[Mis]understanding village abandonments
...nnual Meeting. Clues from tree rings and household objects like remnants of pottery gave researchers insight to determine that the disappearance of the inhabitants in the late 13th century was not due to failure at village life or an inability to grow. Native people moved often to sustain a regional presence...National vision experts converge for research symposium
...e eye's ability to switch from focusing on distant objects to those nearby; loss of vision associated with aging; research related to new treatment options for myopia, or nearsightedness; and research on glaucoma, one of the leading causes of blindness in the country and the most common cause of blindne...... "The infrastructure we have today is suitable for objects that are as small as tens of microns, where a micron is 10 -6 meters. The nanostructure scale we are moving to is tens of nanometers, or 10 -9 meters, so we are talking about three orders of magnitude smaller." Though perspective at the nanometer sca...Native American artifacts pose pesticide exposure risk
...uld pose a risk to tribal members who may wear the objects during religious ceremonies, as well as to museum ...y recognized tribes to request that museums return objects taken from their ancestors. "Many Native Americans are now requesting that objects be returned to t...A closer look yields new clues to why bacteria stick to things
...attraction (or repulsion) depends on how close the objects are to each other. Because the charges are so small, at a distance of one hair-length no attraction should be felt. Electrical charges may still be important, just not for the reasons previously thought. Polymers come in two varieties one with no ch......oing of polynomials. The simplest examples of such objects are curves (such as circles or straight lines) and...natural world. Esnault and Viehweg classify these objects according to their properties, which is a challenging problem in terms of mathematics. The strength ...