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  2. Parts-per notation - Wikipedia

    en.wikipedia.org/wiki/Parts-per_notation

    At 1 ppm the solution is a very pale yellow. As the concentration increases the colour becomes a more vibrant yellow, then orange, with the final 10,000 ppm a deep red colour. In science and engineering , the parts-per notation is a set of pseudo-units to describe small values of miscellaneous dimensionless quantities , e.g. mole fraction or ...

  3. Air pollutant concentrations - Wikipedia

    en.wikipedia.org/wiki/Air_pollutant_concentrations

    This article presents methods for converting concentrations from ppmv to mg/m 3 (and vice versa) and for correcting the concentrations to the required reference conditions. All of the concentrations and concentration corrections in this article apply only to air and other gases. They are not applicable for liquids.

  4. Useful conversions and formulas for air dispersion modeling

    en.wikipedia.org/wiki/Useful_conversions_and...

    Here are the conversion factors for those various expressions of wind speed: 1 m/s = 2.237 statute mile/h = 1.944 knots 1 knot = 1.151 statute mile/h = 0.514 m/s 1 statute mile/h = 0.869 knots = 0.447 m/s. Note: 1 statute mile = 5,280 feet = 1,609 meters

  5. Per mille - Wikipedia

    en.wikipedia.org/wiki/Per_mille

    Visualisation of 1%, 1‰, 1‱, 1 pcm and 1 ppm as fractions of the large block . Percentage point difference of 1 part in 100; Percentage (%) 1 part in 100; Basis point (bp) difference of 1 part in 10,000; Permyriad (‱) 1 part in 10,000; Per cent mille (pcm) 1 part in 100,000

  6. Photos show dramatic before and after scenes of the ...

    www.aol.com/photos-california-wildfires...

    Before and after photos of the deadly wildfires in the Los Angeles area have sent tens of thousands scrambling for safety and decimated neighborhoods.

  7. Concentration - Wikipedia

    en.wikipedia.org/wiki/Concentration

    ppm, ppb, ppt See also. Dilution ratio – Change in concentration when mixing two liquids; Dose concentration – Ratio of part of a mixture to the whole Serial ...

  8. 3 Cracker Barrel Employees Fired After Refusing to Seat Group ...

    www.aol.com/lifestyle/3-cracker-barrel-employees...

    Three employees at a Maryland Cracker Barrel have reportedly been dismissed after staff refused to seat a group of students with special needs on Dec. 3

  9. 9 Canned Mocktails That Are So Good, You Won't Miss the Booze ...

    www.aol.com/tried-73-nonalcoholic-canned...

    See at drinkghia.com. See at Amazon. What we like: It has an astringent quality that others don’t. What to know: The chili may be over-powering to some. Don’t let the small 8-ounce can fool ...