科学与环境
Quantum sensor could measure how Earth drags spacetime
来源: Phys.org - latest science and technology news stories · 发布于

Einstein's theory of general relativity describes gravity as the bending of spacetime, a mathematical model that combines three-dimensional space and time into a single, four-dimensional continuum. The theory also predicts that a rotating object, such as Earth, slightly drags the
Einstein's theory of general relativity describes gravity as the bending of spacetime, a mathematical model that combines three-dimensional space and time into a single, four-dimensional continuum. The theory also predicts that a rotating object, such as Earth, slightly drags the surrounding spacetime as it rotates, a phenomenon known as frame-dragging.
相关报道
Scientists uncover the 2.3-billion-year-old secret that helped keep Earth habitable
Scientists may have solved a 2.3-billion-year-old mystery about how Earth maintained enough oxygen to support life. Ancient rocks reveal that phosphorus recycling in the oceans created a self-sustaining cycle that helped keep oxygen levels high, even as the planet underwent drama
All Top News -- ScienceDaily ·
Scientists recreate a bizarre quantum effect that stops a particle cold
Oxford physicists have recreated a bizarre quantum effect in which a particle responds to a magnetic field without ever traveling through it. Using a hybrid quantum computer, they demonstrated how introducing a simulated magnetic flux could completely halt a particle's movement t
All Top News -- ScienceDaily ·
Europe's new Sentinel-3C satellite just sent back spectacular images of Earth
Europe's Sentinel-3C satellite has returned breathtaking images of Earth just two weeks after launch, revealing the snowy Alps, frozen Arctic islands, and brilliant turquoise Caribbean waters. Its first measurements also show promising results for tracking rising seas, melting ic
All Top News -- ScienceDaily ·
NASA spots a giant patch of Moon-like rock on Earth
An astronaut aboard the International Space Station photographed a remarkable formation in Madagascar that looks surprisingly similar to the Moon’s bright highlands. Made of anorthosite, a rock abundant on the lunar surface, the formation dates back at least 600 million years and
All Top News -- ScienceDaily ·
MIT astronomers catch a star in a feast that could last billions of years
Astronomers have discovered a bizarre star system about 300 light-years from Earth where a small star is slowly devouring a nearby brown dwarf, an object too massive to be a planet but too small to be a true star. Unlike stars that rapidly swallow their companions, this one is gr
All Top News -- ScienceDaily ·