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2. Orders of magnitude (illuminance) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude...

   Factor ()Multiple Value Item 0 0 lux 0 lux Absolute darkness 10 −4: 100 microlux 100 microlux: Starlight overcast moonless night sky [1]: 140 microlux: Venus at brightest [1]: 200 microlux

3. Photometry (optics) - Wikipedia

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

   The relation between watts and lumens is not just a simple scaling factor. We know this already, because the 60 watt incandescent bulb and the 15 watt compact fluorescent can both provide 900 lumens. The definition tells us that 1 watt of pure green 555 nm light is "worth" 683 lumens. It does not say anything about other wavelengths.

4. Luminous flux - Wikipedia

   en.wikipedia.org/wiki/Luminous_flux

   Luminous flux (in lumens) is a measure of the total amount of light a lamp puts out. The luminous intensity (in candelas) is a measure of how bright the beam in a particular direction is. If a lamp has a 1 lumen bulb and the optics of the lamp are set up to focus the light evenly into a 1 steradian beam, then the beam would have a luminous ...

5. Foot-candle - Wikipedia

   en.wikipedia.org/wiki/Foot-candle

   Q v [nb 3] lumen second: lm⋅s T⋅J: The lumen second is sometimes called the talbot. Luminous flux, luminous power Φ v [nb 3] lumen (= candela steradian) lm (= cd⋅sr) J: Luminous energy per unit time Luminous intensity: I v: candela (= lumen per steradian) cd (= lm/sr) J: Luminous flux per unit solid angle: Luminance: L v: candela per ...

6. AOL Mail for Verizon Customers - AOL Help

   help.aol.com/products/aol-mail-verizon

   AOL Mail welcomes Verizon customers to our safe and delightful email experience!

7. Ravens suspend WR Diontae Johnson for 1 game after he refused ...

   www.aol.com/sports/ravens-suspending-wr-diontae...

   The Baltimore Ravens have suspended wide receiver Diontae Johnson for one game due to “conduct detrimental to the team,” the team announced Wednesday afternoon.

8. How to watch the Quadrantids, one of the strongest meteor ...

   www.aol.com/watch-quadrantids-first-meteor...

   This particular asteroid is 2003 EH1, which takes 5.52 years to complete one orbit around the sun and measures 2 miles (3.2 kilometers) across. But astronomers believe a second object, Comet 96P ...

9. Isotopes of cobalt - Wikipedia

   en.wikipedia.org/wiki/Isotopes_of_cobalt

   Between 600 and 800 days after SN1987A occurred, the bolometric light curve decreased at an exponential rate with half-life values from τ 1/2 = 68.6 days to τ 1/2 = 69.6 days. [6] The rate at which the luminosity decreased closely matched the exponential decay of 56 Co with a half-life of τ 1/2 = 77.233 days.