Browsing: Physics

Scientists from the University of Warwick have produced the first weather map of a planet outside our solar system. The planet in question – HD 189733b – is not likely to top the list of interstellar tourist destinations. Based on ground observations, the map shows winds 20 times faster than any recorded on Earth, or seven times the speed of sound. HD 189733b is an extrasolar planet orbiting the star HD 189733 about 63 light-years from Earth in the constellation of Vulpecula. Thirteen percent more massive than Jupiter, it orbits its parent star in 2.2 days, making it a “hot…

Researchers have successfully created a knotted water vortex, a feat akin to tying a smoke ring into a knot. The achievement allows scientists to study this previously unobserved phenomena in a laboratory. Dustin Kleckner, a postdoctoral scientist at the University of Chicago’s James Franck Institute, is one of the scientists behind the creation of the knotted vortices. He said the unexpected thing about vortex loops is that they break apart by stretching themselves. The vortex knots actually elongate themselves while circulating in opposite directions. They then move toward each other, eventually colliding and unknotting themselves. This process has previously gone…

Normally, when we think of clocks, we think of time — seconds, minutes, hours. When we think of scales, we think of weight — ounces, grams, pounds. However, a new clock developed by physicists at the University of California, Berkeley is said to be the most fundamental clock ever created, combining a clock’s function with a scale’s, telling time in matter. Like lots of important inventions that furthered mankind — plastic, velcro, stainless steel, and the vitally important slinky — the invention of this clock was sort of an accident. Theatomic clock, which is the most accurate time-telling device of…