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  2. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    atmosphere-cubic foot per hour: atm cfh [citation needed] ≡ 1 atm × 1 cu ft/h = 0.797 001 247 04 W: atmosphere-cubic foot per minute: atm cfm [citation needed] ≡ 1 atm × 1 cu ft/min = 47.820 074 682 24 W: atmosphere-cubic foot per second: atm cfs [citation needed] ≡ 1 atm × 1 cu ft/s = 2.869 204 480 9344 × 10 3 W: BTU (International ...

  3. Cubic foot - Wikipedia

    en.wikipedia.org/wiki/Cubic_foot

    The IEEE symbol for the cubic foot per second is ft 3 /s. [1] The following other abbreviations are also sometimes used: ft 3 /sec; cu ft/s; cfs or CFS; cusec; second-feet; The flow or discharge of rivers, i.e., the volume of water passing a location per unit of time, is commonly expressed in units of cubic feet per second or cubic metres per second.

  4. Square foot - Wikipedia

    en.wikipedia.org/wiki/Square_foot

    Comparison of 1 square foot with some Imperial and metric units of area. The square foot (pl. square feet; abbreviated sq ft, sf, or ft 2; also denoted by ' 2 and ⏍) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States, Canada, the United Kingdom, Bangladesh, India, Nepal, Pakistan, Ghana, Liberia, Malaysia, Myanmar, Singapore and Hong Kong.

  5. Square–cube law - Wikipedia

    en.wikipedia.org/wiki/Square–cube_law

    Its volume would be multiplied by the cube of 2 and become 8 m 3. The original cube (1 m sides) has a surface area to volume ratio of 6:1. The larger (2 m sides) cube has a surface area to volume ratio of (24/8) 3:1. As the dimensions increase, the volume will continue to grow faster than the surface area. Thus the square–cube law.

  6. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    The cubic inch, cubic foot and cubic yard are commonly used for measuring volume. In addition, there is one group of units for measuring volumes of liquids (based on the wine gallon and subdivisions of the fluid ounce), and one for measuring volumes of dry material, each with their own names and sub-units.

  7. Standard cubic foot - Wikipedia

    en.wikipedia.org/wiki/Standard_cubic_foot

    A standard cubic foot (scf) is a unit representing the amount of gas (such as natural gas) contained in a volume of one cubic foot at reference temperature and pressure conditions. It is the unit commonly used when following the customary system , a collection of standards set by the National Institute of Standards and Technology .

  8. The best air purifiers of 2025 - AOL

    www.aol.com/best-air-purifiers-190644198.html

    For large rooms up to 1,881 square feet – such as a family/living room ... It cleared out a 10’ by 8’ room filled with 343 micrograms per cubic meter of PM 2.5 down to a baseline of five in ...

  9. Rod (unit) - Wikipedia

    en.wikipedia.org/wiki/Rod_(unit)

    A traditional unit of volume for stone and other masonry. A perch of masonry is the volume of a stone wall one perch (16 + 1 ⁄ 2 feet or 5.03 metres) long, 18 inches (45.7 cm) high, and 12 inches (30.5 cm) thick. This is equivalent to exactly 24 + 3 ⁄ 4 cubic feet (0.92 cubic yards; 0.70 cubic metres; 700 litres).