Genetics

With single gene insertion, blind mice regain sight

It was surprisingly simple. University of California, Berkeley, scientists inserted a gene for a green-light receptor into the eyes of blind mice and, a month later, they were navigating around obstacles as easily as mice ...

Neuroscience

Eyes have a natural version of night vision

To see under starlight and moonlight, the retina of the eye changes both the software and hardware of its light-sensing cells to create a kind of night vision. Retinal circuits that were thought to be unchanging and programmed ...

Medical research

Light based cochlear implant restores hearing in gerbils

A team of researchers with members from a variety of institutions across Germany has developed a new type of cochlear implant—one based on light. In their paper published in the journal Science Translational Medicine, the ...

Cancer

Cancer immunotherapy uses melanin against melanoma

Researchers have developed a melanin-enhanced cancer immunotherapy technique that can also serve as a vaccine, based on early experiments done in a mouse model. The technique is applied via a transdermal patch.

Diabetes

Insulin under the influence of light

The disruption of internal clocks seems to play a significant role in the explosion of metabolic diseases observed in recent decades, particularly diabetes. Scientists have improved understanding of the importance of day-night ...

Medical research

How light triggers brain activity

Optogenetics uses light to control brain processes. It is based on light-controlled proteins such as channelrhodopsin-2, an ion channel that opens when it's exposed to light, thus activating cellular processes. In collaboration ...

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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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