The drinking straw is a device used for sucking up a liquid - usually a drink. A thin tube of plastic (especially polystyrene) or other material, straight or with an accordion-like living hinge, it is employed by being held with one end in the mouth and another end in the drink. Muscular action reduces air pressure in the mouth, whereupon atmospheric pressure forces the drink up the straw. The first straws were made by the Sumerians, and used for drinking beer (as to avoid the solid byproducts of fermentation). Argentinians use a similar device called bombilla that acts as both a straw and sieve for drinking mate tea. The modern drinking straw was patented in 1888 by Marvin C. Stone.
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A day (symbol: d) is a unit of time equivalent to 24 hours. It is not an SI unit but it is accepted for use with SI. The SI unit of time is the second. The term comes from the Old English dg, with similar terms common in all other Indo-European languages, such as dies in Latin and dive in Sanskrit. Contents 1 Definitions 1.1 International System of Units (SI) 1.2 Astronomy 1.3 Colloquial 2 Introduction 3 Civil day 4 Leap seconds 5 Astronomy 6 Boundaries of the day 7 Metaphorical days
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