Health

The science behind face massage rollers

Facial massaging using a roller can increase skin blood flow for more than 10 minutes after the massage. It can also improve vasodilation, the widening of blood vessels, in the long term, according to a study by researchers ...

Surgery

If you're considering cosmetic surgery...

(HealthDay)—More than 17 million cosmetic procedures are performed in the United States each year. Most of these are minimally invasive, designed to improve your appearance in subtle ways without the surgery, stitches and ...

Medical research

How laser treated implants can boost the healing process

Marilys Blanchy is a Research & Development project manager at Rescoll. The French technology center is specialized in polymer science, adhesive and coating and has a subsidiary where medical devices as orthopedics and dental ...

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Laser

A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.

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