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  2. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    Legally defined as 1.033 English feet in 1859 ≈ 0.314 858 m: ... = 1 ⁄ 4 gal (US dry) ... ≡ change in the thermodynamic temperature T that results in a change ...

  3. Mud weight - Wikipedia

    en.wikipedia.org/wiki/Mud_weight

    In the oil industry, mud weight is the density of the drilling fluid and is normally measured in pounds per gallon (lb/gal) (ppg) or pound cubic feet (pcf) . [1] In the field it is measured using a mud scale or mud balance. Mud can weigh up to 22 or 23 ppg. A gallon of water typically weighs 8.33 pounds (or 7.48 ppg).

  4. Dry ice - Wikipedia

    en.wikipedia.org/wiki/Dry_ice

    Dry ice is the solid form of carbon dioxide (CO 2), a molecule consisting of a single carbon atom bonded to two oxygen atoms. Dry ice is colorless, odorless, and non-flammable, and can lower the pH of a solution when dissolved in water, forming carbonic acid (H 2 CO 3). [1]

  5. Here's Everything You Need to Know About Dry Ice - AOL

    www.aol.com/heres-everything-know-dry-ice...

    For premium support please call: 800-290-4726 more ways to reach us

  6. Imperial and US customary measurement systems - Wikipedia

    en.wikipedia.org/wiki/Imperial_and_US_customary...

    The apothecaries and troy pounds are divided into 12 ounces (of 480 grains) while the avoirdupois pound has 16 ounces (of 437.5 grains). The unit of volume, the gallon, has different values in the United States and in the United Kingdom – the US fluid gallon being about 0.83 imperial gallons and the US dry gallon being about 0.97 imperial ...

  7. Density - Wikipedia

    en.wikipedia.org/wiki/Density

    To simplify comparisons of density across different systems of units, it is sometimes replaced by the dimensionless quantity "relative density" or "specific gravity", i.e. the ratio of the density of the material to that of a standard material, usually water. Thus a relative density less than one relative to water means that the substance ...

  8. Dry measure - Wikipedia

    en.wikipedia.org/wiki/Dry_measure

    In US customary units, most units of volume exist both in a dry and a liquid version, with the same name, but different values: the dry hogshead, dry barrel, dry gallon, dry quart, dry pint, etc. The bushel and the peck are only used for dry goods. Imperial units of volume are the same for both dry and liquid goods. They have a different value ...

  9. Underwater explosions using dry ice in slow motion - AOL

    www.aol.com/article/2015/05/08/underwater...

    Underwater explosions using dry ice and liquid nitrogen are captured in high definition slow motion by The Backyard Scientist.