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2. Photometry (optics) - Wikipedia

   en.wikipedia.org/wiki/Photometry_(optics)

   Radiant energy received by a surface per unit area, or equivalently irradiance of a surface integrated over time of irradiation. This is sometimes also called "radiant fluence". Spectral exposure: H e,ν [nb 6] joule per square metre per hertz J⋅m −2 ⋅Hz −1: M⋅T −1: Radiant exposure of a surface per unit frequency or

3. Irradiance - Wikipedia

   en.wikipedia.org/wiki/Irradiance

   In radiometry, irradiance is the radiant flux received by a surface per unit area. The SI unit of irradiance is the watt per square metre (symbol W⋅m −2 or W/m 2 ). The CGS unit erg per square centimetre per second (erg⋅cm −2 ⋅s −1 ) is often used in astronomy .

4. Luminous intensity - Wikipedia

   en.wikipedia.org/wiki/Luminous_intensity

   Light with the same radiant intensity at other wavelengths has a lower luminous intensity. The curve which represents the response of the human eye to light is a defined standard function y (λ) or V (λ) established by the International Commission on Illumination (CIE, for Commission Internationale de l'Éclairage ) and standardized in ...

5. We Ask a Derm: What's the Difference Between An Eye ... - AOL

   www.aol.com/lifestyle/ask-derm-whats-difference...

   Even within a specific category like eye treatments, there’s always another launch for the latest. PureWow editors select every item that appears on this page, and the company may earn ...

6. These Drugstore Eye Creams Might Be Better Than Your Luxury ...

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   This eye cream has a gel-like consistency that also hydrates and plumps at the same time. Key ingredients : Hyaluronic acid, peptides, vitamin C, vitamin E Best for: Dark circles, fine lines

7. This Light and Gentle Eye Gel Is a Bestselling Antidote for ...

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   After all, plenty of eye creams and gels may have positive reviews, but when it comes to specifically treating dark spots, we have Shopping for a product to tackle a skincare issue as common as ...

8. Spectral power distribution - Wikipedia

   en.wikipedia.org/wiki/Spectral_power_distribution

   Mathematically, for the spectral power distribution of a radiant exitance or irradiance one may write: =where M(λ) is the spectral irradiance (or exitance) of the light (SI units: W/m 2 = kg·m −1 ·s −3); Φ is the radiant flux of the source (SI unit: watt, W); A is the area over which the radiant flux is integrated (SI unit: square meter, m 2); and λ is the wavelength (SI unit: meter, m).

9. The 10 Best Eye Creams That Actually Brighten ... - AOL

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   Total Eye 3-in-1 Renewal Therapy SPF 35. Finding an easy-to-apply daytime eye cream can be tricky. A good one will have a lightweight gel texture that sinks into the skin and wears well under ...