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  2. Water pouring puzzle - Wikipedia

    en.wikipedia.org/wiki/Water_pouring_puzzle

    Water pouring puzzles (also called water jug problems, decanting problems, [1] [2] measuring puzzles, or Die Hard with a Vengeance puzzles) are a class of puzzle involving a finite collection of water jugs of known integer capacities (in terms of a liquid measure such as liters or gallons). Initially each jug contains a known integer volume of ...

  3. Laboratory glassware - Wikipedia

    en.wikipedia.org/wiki/Laboratory_glassware

    Borosilicate glass is a type of transparent glass that is composed of boron oxide and silica, its main feature is a low coefficient of thermal expansion making it more resistant to thermal shock than most other glasses. [10] Quartz glass can withstand very high temperatures and is transparent in certain parts of the electromagnetic spectrum.

  4. Beaker (laboratory equipment) - Wikipedia

    en.wikipedia.org/wiki/Beaker_(laboratory_equipment)

    The presence of a spout means that the beaker cannot have a lid. However, when in use, beakers may be covered by a watch glass to prevent contamination or loss of the contents, but allowing venting via the spout. Alternatively, a beaker may be covered with another larger beaker that has been inverted, though a watch glass is preferable.

  5. Flow measurement - Wikipedia

    en.wikipedia.org/wiki/Flow_measurement

    By measuring the time interval between these pulses, the gas velocity is calculated as = / where is the distance between the laser beams and is the time interval. Laser-based optical flowmeters measure the actual speed of particles, a property which is not dependent on thermal conductivity of gases, variations in gas flow or composition of gases.

  6. Pyrex - Wikipedia

    en.wikipedia.org/wiki/Pyrex

    A PYREX measuring cup manufactured c. 1980, featuring graduations in both U.S. and metric units. Pyrex (trademarked as PYREX and pyrex) is a brand introduced by Corning Inc. in 1915, initially for a line of clear, low-thermal-expansion borosilicate glass used for laboratory glassware and kitchenware.

  7. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    A foe is a unit of energy equal to 10 44 joules (≈9.478 × 10 40 BTU) that was invented by physicist Gerry Brown of Stony Brook University. To measure the staggeringly immense amount of energy produced by a supernova, specialists occasionally use the "foe", an acronym derived from the phrase [ten to the power of] fifty-one ergs, or 10 51 ergs ...

  8. Rain gauge - Wikipedia

    en.wikipedia.org/wiki/Rain_gauge

    The exterior of a tipping bucket rain gauge The interior of a tipping bucket rain gauge. The tipping bucket rain gauge consists of a funnel that collects and channels the precipitation into a small seesaw-like container. After a pre-set amount of precipitation falls, the lever tips, dumping the collected water and sending an electrical signal.

  9. Five-gallon bucket - Wikipedia

    en.wikipedia.org/wiki/Five-gallon_bucket

    They have been called the ultimate recyclable. The many possible uses for a five-gallon bucket can be an outlet of creativity and resourcefulness. The bucket is also used everyday by hundreds of street performers who use the bucket as a form of busking. Bucket drumming is where a person drums on five-gallon plastic buckets. [3]

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