Tag Archives | Light

Maybe some green can help alleviate the migraine?

Green light reduces migraine headaches

Migraine headaches, or migraines, are defined as an intense throbbing or a pulsing sensation in one area of the head, usually with nausea, vomiting, and sensitivity to light and sound. Migraines are prevalent globally, as 30% or more people worldwide who struggle with headaches report suffering from migraines. Although migraines themselves are not lethal (if […]

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Image captures light as both a particle and a wave

Quantum mechanics tells us that light can behave simultaneously as a particle or a wave, but it’s only possible to see one of these attributes at any given moment. Even though a variety of experiments have successfully observed both behaviors of light, they have never been able to observe both at the same time. Now, […]

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Table-top particle accelerator sets world record

Using a small, inches-long device, researchers have accelerated subatomic particles to the highest energies ever recorded from a compact particle accelerator. With further development, the Berkeley Lab researchers believe they can shrink traditional, miles-long accelerators to machines that can fit on a table. The researchers sped up the electrons inside a nine-centimeter (4 inch) long […]

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Quantum camera takes pic using only entangled photons

Using a new quantum imaging technique, a picture has been captured without the camera detecting the light that was used to illuminate the subject. Instead, the detector relies on entangled photons that have never touched the subject (in this case, a silhouette of a cat). Normally, an image of an object is obtained by sensing […]

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Experiment could reveal mechanism behind quantum entanglement

Physicists have devised an experiment that could reveal the precise workings of Einstein’s “spooky action at a distance.” The results, say the scientists, would show that either faster-than-light communication is possible, or, that the Universe is fundamentally nonlocal, in the sense that every bit of the Universe is connected to every other bit. The proposal […]

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Tiny jellyfish has proto-eye linked to stingers

The first steps in the evolution of an eye may be evident in the hydra’s stinging tentacles, say scientists who have discovered that the tentacles are light sensitive and operate in fundamentally the same way as the eyes in animals. The findings, in the journal BMC Biology, indicate that even in the absence of complex […]

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Novel solar cells utilize light’s magnetic properties

Light has electric and magnetic components but scientists had always believed the effects of the magnetic field to be insignificant. Now, however, University of Michigan researchers have found that under the right circumstances, light can generate magnetic effects that are 100 million times stronger than previously expected, making magnetic solar cells a possibility. “You could […]

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Lighten up to get heavy

Exposure to light at night may lead to weight gain, even without changes in food intake and physical activity levels, according to new research conducted with mice. The researchers found that mice exposed to a relatively dim light at night over eight weeks had a body mass gain that was about 50 percent more than […]

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Bright light at night carcinogenic

A new study from the University of Haifa confirms the theory that bright artificial lighting at night disrupts the body’s production of melatonin and increases susceptibility to prostate cancer in men and breast cancer in women. “High power light bulbs contribute more to ‘environmental light pollution’, which the study has shown is a carcinogenic pollution,” […]

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Matrix turns opaque materials transparent

Experiments conducted by researchers at the City of Paris Industrial Physics and Chemistry Higher Educational Institution have shown that it’s possible to focus light through opaque materials and detect objects hidden behind them. Reporting their findings in Physical Review Letters, the scientists explain that materials such as paper, paint and biological tissue are opaque because […]

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