Health

Blue light at night increases the consumption of sweets in rats

A new study demonstrates that just one hour of exposure to blue light at night—the kind of light produced by the screens of many devices—raises blood sugar levels and increases sugar consumption in male rats. This study, ...

Arthritis & Rheumatism

Light touch to improve rheumatoid arthritis diagnosis

A new way of detecting rheumatoid arthritis using infrared light could offer an objective way of diagnosing the disease and monitoring treatment effectiveness, a University of Birmingham study shows.

Health

Research shows smoking triples deaths from heart disease

Smoking is killing at least 17 Australians a day from preventable heart attacks, strokes and other cardiovascular conditions, new research led by The Australian National University (ANU) has found.

Ophthalmology

Low-cost retinal scanner could help prevent blindness worldwide

Biomedical engineers at Duke University have developed a low-cost, portable optical coherence tomography (OCT) scanner that promises to bring the vision-saving technology to underserved regions throughout the United States ...

Oncology & Cancer

Laser light detects tumors

Cancer—this diagnosis affects almost every second German at some point in their life. It is the second most frequent cause of death in Germany. But the earlier the disease is diagnosed, the greater are the chances of surviving ...

Neuroscience

Virtual reality takes a leap into taste

A fly hasn't eaten for an entire day, and it's starving. It finds a pile of edible gelatinous goo and begins eating, when a green light appears, and the food, which was far from delicious a moment ago, becomes irresistibly ...

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Light

Light is electromagnetic radiation, particularly radiation of a wavelength that is visible to the human eye (about 400–700 nm, or perhaps 380–750 nm.) In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not.

Three primary properties of light are:

Light, which exists in tiny "packets" called photons, exhibits properties of both waves and particles. This property is referred to as the wave–particle duality. The study of light, known as optics, is an important research area in modern physics.

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