Buy D&G The Primer Sheer Radiance Make Up Base SPF30 30ml Online

Create the perfect base for makeup application with Dolce & Gabbana The Primer. Buy Radiance Makeup Base Enriched with precious extracts of Gold Silk Sericin, this radiance-enhancing formula perfects, illuminates and protects skin for a fresh, natural glow and a beautifully smooth, even texture while SPF30 protects from environmental damage Buy Radiance Makeup Base .

Created for the woman seeking a natural glow and beautifully smooth skin.

– Prepares the skin for makeup and prolongs wear

– Intensely hydrating makeup base

– Light reflective particles illuminate the skin

– Reduces signs of fatigue and discolouration

– Moisturising formula gives skin a smooth, even texture

– Infused with Gold Silk Sericin and Italian olive oil extracts

– SPF30 protects the skin from harmful UV rays

– Can be used under foundation

– Fragrance-free

– Light, transparent texture suits all skin tones.

Radiance is useful because it indicates how much of the power emitted, reflected, transmitted or received by a surface will be received by an optical system looking at that surface from a specified angle of view. In this case, the solid angle of interest is the solid angle subtended by the optical system’s entrance pupil.

Since the eye is an optical system, radiance and its cousin luminance are good indicators of how bright an object will appear. For this reason, radiance and luminance are both sometimes called “brightness”.

This usage is now discouraged (see the article Brightness for a discussion). The nonstandard usage of “brightness” for “radiance” persists in some fields, notably laser physics.

The radiance divided by the index of refraction squared is invariant in geometric optics. This means that for an ideal optical system in air, the radiance at the output is the same as the input radiance.

This is sometimes called conservation of radiance. For real, passive, optical systems, the output radiance is at most equal to the input, unless the index of refraction changes.

As an example, if you form a demagnified image with a lens, the optical power is concentrated into a smaller area, so the irradiance is higher at the image. The light at the image plane, however, fills a larger solid angle so the radiance comes out to be the same assuming there is no loss at the lens.