If you have high blood pressure, then you likely already know that it's the leading cause of stroke, and a major risk factor for cardiovascular disease. So, besides things like medication, diet changes and exercise, what can be done to reduce it? Well, exposure to blue light may help.
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The tractor beam is a long-time staple of sci-fi, but now Australian researchers have created a real-world version. While it won’t exactly be capturing enemy spaceships anytime soon, the device can use light to pull in and trap atoms, which may be handy for quantum communications or memory systems.
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Fiber optics allows for ultra-fast communication systems, and more data can be crammed in by "twisting" the light. Now, Australian researchers have developed a device to decode beams that’s small enough to fit over the end of a fiber optic cable.
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The 2018 Nobel Prize in Physics has been awarded to three scientists: Arthur Ashkin for developing optical tweezers, and Gérard Mourou and Donna Strickland, for designing a method to generate high-intensity, ultra-short laser pulses.
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Quantum entanglement is an eerie concept that Einstein himself had trouble accepting, and yet it’s been experimentally demonstrated. To find out whether there are other variables, a new experiment provides the strongest evidence so far of quantum entanglement or a 12-billion year “conspiracy."
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To avoid a future where once-routine procedures become life-threatening again, new ways to fight bacteria need to be developed. A new study has now shown oxygen can be weaponized against antibiotic-resistant bacteria, by way of nanoparticles activated by light.
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An international team of astronomers has detected the most distant radio galaxy ever observed. By measuring the redshift of its light, the researchers determined that the object is about 12 billion light-years away, which dates it back to when the universe itself was just a kid.
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It's a novel idea, using light diffracted through numerous plates instead of electrons. And to some, it might seem a little like replacing a computer with an abacus, but researchers at UCLA have high hopes for their quirky, shiny, speed-of-light artificial neural network.
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Discoveries that back up Einstein’s theory of general relativity are still being made. The latest comes from the Max Planck Institute, where astronomers have watched how the supermassive black hole at the center of the Milky Way pulls and stretches the light from a star as it makes its closest pass.
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Chronic skin ulcers such as those associated with diabetes are notoriously difficult to treat. As a result, we've seen experimental approaches such as spray-on skin, ultrasound band-aids, and silver-laced dressings. Now, scientists are getting very good results using a high-tech lamp.
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