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Guitar Effects. Guitar tree. Tiny 'Soccer Ball' Space Molecules Could Equal 10,000 Mount Everests. For the first time, astronomers have discovered the solid form of tiny carbon spheres in deep space inside a vast cloud of particles locked in orbit around two distant stars.
The carbon spheres, known as buckyballs, are formed from 60 carbon atoms linked together to form a hollow sphere, "like a soccer ball," NASA announced in a statement today (Feb. 22). Astronomers spotted vast quantities of the tiny space balls, enough to create 10,000 Mount Everests, circling a pair of stars 6,500 light-years from Earth. "These buckyballs are stacked together to form a solid, like oranges in a crate," said the study's lead author Nye Evans of Keele University in England in a statement. "The particles we detected are miniscule, far smaller than the width of a hair, but each one would contain stacks of millions of buckyballs. " NASA's Spitzer Space Telescope, a space-based infrared observatory, spotted the buckyballs around the double-star system XX Ophiuchi. Physics, Chemistry & Maths.
Local Things. Christinabirgitta. Physics. Quantum Theory Demonstrated: Observation Affects Reality. From universities, journals, and other organizations Date: February 27, 1998 Source: Weizmann Institute Of Science Summary: One of the most bizarre premises of quantum theory, which has long fascinated philosophers and physicists alike, states that by the very act of watching, the observer affects the observed reality.
REHOVOT, Israel, February 26, 1998--One of the most bizarre premises of quantum theory, which has long fascinated philosophers and physicists alike, states that by the very act of watching, the observer affects the observed reality. Story Source: The above story is based on materials provided by Weizmann Institute Of Science. Cite This Page: Weizmann Institute Of Science. Weizmann Institute Of Science. (1998, February 27). Weizmann Institute Of Science. More Matter & Energy News. The Chronicles, Poems-2. Light touch keeps a grip on delicate nanoparticles. Using a refined technique for trapping and manipulating nanoparticles, researchers at the National Institute of Standards and Technology (NIST) have extended the trapped particles' useful life more than tenfold.
This new approach, which one researcher likens to "attracting moths," promises to give experimenters the trapping time they need to build nanoscale structures and may open the way to working with nanoparticles inside biological cells without damaging the cells with intense laser light. Scientists routinely trap and move nanoparticles in a solution with "optical tweezers" -- a laser focused to a very small point.
The tiny dot of laser light creates a strong electric field, or potential well, that attracts particles to the center of the beam. Although the particles are attracted into the field, the molecules of the fluid they are suspended in tend to push them out of the well. "You can think of it like attracting moths in the dark with a flashlight," says LeBrun. Defending Just-So Stories. Last week I spoke about the role of storytelling in science on NPR’s Big Picture Science (the interview won’t air until December). Most people think of story as belonging to the arty world of the humanities—as cut off from the data-driven, hyper-rational world of science. But scientists tell stories all the time. In fact, I think of science as a grand story that emerges—like religion—from our need to make sense of the world.
As I’ve written elsewhere, “The story-like character of science is most obvious when it deals with origins: of the universe, of life, of storytelling itself. Take the theory of the Big Bang. When I was in graduate school in the 1990s, many postmodernists proclaimed that science was another story, with no more claim to truth than other “ways of knowing” like religion or common sense. Which brings me to Adam Gottlieb, a writer who recently stirred controversy with his critique of evolutionary psychology . 380618 3239493099917 1044479924 33058424 1092358662 n. Scribd. Physics. Future Society & Enviroment. 3cec35fc31785013e26e549569bde2e0 w250 (1)