Neuroscience

Using light instead of electricity in cochlear implants

A team of researchers affiliated with multiple institutions in Germany has developed a cochlear implant that converts sound waves to light signals instead of electrical signals. In their paper published in the journal Science ...

Diseases, Conditions, Syndromes

Eye scans can provide crucial insights into kidney health, study finds

3D eye scans can reveal vital clues about kidney health that could help to track the progression of disease, research suggests. The advance could revolutionize the monitoring of kidney disease, which often progresses without ...

Diseases, Conditions, Syndromes

Rapid Ebola diagnosis may be possible with new technology

A new tool can quickly and reliably identify the presence of Ebola virus in blood samples, according to a study by researchers at Washington University School of Medicine in St. Louis and colleagues at other institutions.

Neuroscience

New research sheds light on the brain's GPS system

Grid cells are the brain's GPS system. But do they use brain waves to gather information about speed and direction? Researchers at the University of Oslo resolved the question.

Neuroscience

Measuring brain blood flow and activity with light

A new, noninvasive method for measuring brain blood flow with light has been developed by biomedical engineers and neurologists at the University of California, Davis, and used to detect brain activation. The new method, ...

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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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