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Napkin ring, napkin dispenser A napkin holder is a device used to hold napkins . A napkin holder can be made from virtually any solid material and is built so that the napkins do not slip from its hold, either by way of sandwiching them between two surfaces, or simply enclosing them on their sides in a horizontal design.
The term 'napkin' dates from the 14th century, in the sense of a piece of cloth or paper used at mealtimes to wipe the lips or fingers and to protect clothing. [1] The word derives from the Late Middle English nappekin, from Old French nappe (tablecloth, from Latin mappa), with the suffix -kin.
An obturating ring is a ring of relatively soft material designed to obturate under pressure to form a seal. Obturating rings are often found in artillery and other ballistics applications, and similar devices are also used in other applications such as plumbing , like the olive in a compression fitting .
When an aluminum or plastic bottle cap has an integral band, it is usually connected by thin bridges. They can be molded along with the cap or slit afterwards. [1] When unscrewing the cap, the frangible ring breaks: the ring can separate from the cap, and two separate pieces remain, the sealing piece and the leftover ring; or the broken ring can form a "pigtail" still attached to the cap.
Napkin folding is most commonly encountered as a table decoration in fancy restaurants. [1] Typically, and for best results, a clean, pressed, and starched square cloth (linen or cotton) napkin is used. [2] There are variations in napkin folding in which a rectangular napkin, a napkin ring, a glass, or multiple napkins may be used.
The figural napkin ring is an American specialty in which the simple napkin ring is part of a small figure or sculpture that may take any shape and show any motif. Napkin rings appear as single items with the name or initials of the owner, notably given as christening presents, or pairs often given as gifts at weddings and silver weddings. In ...
Letters sealed with wax in a painting from 1675 by Cornelis Norbertus Gysbrechts. Sealing wax is a wax material of a seal which, after melting, hardens quickly (to paper, parchment, ribbons and wire, and other material), forming a bond that is difficult to break without noticeable tampering.
Reprint of 1935 edition. A problem on page 101 describes the shape formed by a sphere with a cylinder removed as a "napkin ring" and asks for a proof that the volume is the same as that of a sphere with diameter equal to the length of the hole. Pólya, George (1990), Mathematics and Plausible Reasoning, Vol.
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