Ophthalmology

Third of children who need glasses aren't wearing them

It's a problem many teachers are familiar with, a student apparently struggling in class, but in fact just suffering from something that's easily fixed—vision problems—with an inexpensive pair of glasses.

Health

Drinking soft drinks tied to higher risk for early death

(HealthDay)—Greater consumption of soft drinks, both sugar-sweetened and artificially sweetened, is associated with a higher risk for all-cause mortality, according to a European study published online Sept. 3 in JAMA Internal ...

Ophthalmology

O2Amp 'Oxy-Iso' glasses ineffective at curing colour-blindness

The below study is part of a wider project being conducted at the Department of Optics of the University of Granada, Spain, to investigate various aids marketed as being able to "improve" colour vision among colour-blind ...

Autism spectrum disorders

Tool helps kids with autism improve socialization skills

A team of NIH-funded researchers at Stanford University Medical School has found that children with autism improved measurably on a test of socialization and learning when their therapy included an at-home intervention with ...

Neuroscience

Mixed reality makes for better surgeons

When neurosurgeons cut into the brain, they must be very, very precise: A single slip could mean disaster. Ehsan Azimi is working on a new augmented reality platform that could greatly improve brain surgeons' ability to navigate ...

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Glass

Glass generally refers to hard, brittle, transparent material, such as those used for windows, many bottles, or eyewear. Examples of such solid materials include, but are not limited to, soda-lime glass, borosilicate glass, acrylic glass, sugar glass, isinglass (Muscovy-glass), or aluminium oxynitride. In the technical sense, glass is an inorganic product of fusion which has been cooled through the glass transition to a rigid condition without crystallizing. Many glasses contain silica as their main component and glass former.

In the scientific sense the term glass is often extended to all amorphous solids (and melts that easily form amorphous solids), including plastics, resins, or other silica-free amorphous solids. In addition, besides traditional melting techniques, any other means of preparation are considered, such as ion implantation, and the sol-gel method. However, glass science and physics commonly includes only inorganic amorphous solids, while plastics and similar organics are covered by polymer science, biology and further scientific disciplines.

Glass plays an essential role in science and industry. The optical and physical properties of glass make it suitable for applications such as flat glass, container glass, optics and optoelectronics material, laboratory equipment, thermal insulator (glass wool), reinforcement fiber (glass-reinforced plastic, glass fiber reinforced concrete), and art.

The term glass developed in the late Roman Empire. It was in the Roman glassmaking center at Trier, Germany, that the late-Latin term glesum originated, probably from a Germanic word for a transparent, lustrous substance.

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