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| Orangutans instinctively use hammers to strike and sharp stones to cut, study finds Posted: 16 Feb 2022 11:02 AM PST Untrained, captive orangutans can complete two major steps in the sequence of stone tool use: striking rocks together and cutting using a sharp stone, according to a new study. |
| Atomic clocks measure Einstein's general relativity at millimeter scale Posted: 16 Feb 2022 08:22 AM PST Physicists have measured Albert Einstein's theory of general relativity, or more specifically, the effect called time dilation, at the smallest scale ever, showing that two tiny atomic clocks, separated by just a millimeter or the width of a sharp pencil tip, tick at different rates. |
| Ultraprecise atomic clock poised for new physics discoveries Posted: 16 Feb 2022 08:22 AM PST Physicists have made one of the highest performance atomic clocks ever. Their instrument, known as an optical lattice atomic clock, can measure differences in time to a precision equivalent to losing just one second every 300 billion years and is the first example of a 'multiplexed' optical clock, where six separate clocks can exist in the same environment. Its design allows the team to test ways to search for gravitational waves, attempt to detect dark matter, and discover new physics with clocks. |
| Supermassive black hole caught hiding in a ring of cosmic dust Posted: 16 Feb 2022 08:22 AM PST The European Southern Observatory's Very Large Telescope Interferometer (ESO's VLTI) has observed a cloud of cosmic dust at the centre of the galaxy Messier 77 that is hiding a supermassive black hole. The findings have confirmed predictions made around 30 years ago and are giving astronomers new insight into "active galactic nuclei", some of the brightest and most enigmatic objects in the universe. |
| Breakthrough in converting carbon dioxide into fuel using solar energy Posted: 16 Feb 2022 07:30 AM PST A research team has shown how solar power can convert carbon dioxide into fuel, by using advanced materials and ultra-fast laser spectroscopy. The breakthrough could be an important piece of the puzzle in reducing the levels of greenhouse gases in the atmosphere in the future. |
| Key brain mechanisms for organizing memories in time Posted: 15 Feb 2022 01:34 PM PST Using experiments and a deep machine learning data analysis approach, scientists uncovered the fundamental workings of the hippocampus region of the brain as it organizes memories into time sequences. The work could help future research into cognitive disorders such as Alzheimer's disease and other causes of dementia. |
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