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Scottish silver stirrup cups, Hallmarked Edinburgh, 1917. The "parting glass", or "stirrup cup", was the final hospitality offered to a departing guest. Once they had mounted, they were presented one final drink to fortify them for their travels. The custom was practised in several continental countries. [8]
Filament winding is a fabrication technique mainly used for manufacturing open (cylinders) or closed end structures (pressure vessels or tanks). This process involves winding filaments under tension over a rotating mandrel. The mandrel rotates around the spindle (Axis 1 or X: Spindle) while a delivery eye on a carriage (Axis 2 or Y: Horizontal ...
Helical antenna. A helical antenna is an antenna consisting of one or more conducting wires wound in the form of a helix. A helical antenna made of one helical wire, the most common type, is called monofilar, while antennas with two or four wires in a helix are called bifilar, or quadrifilar, respectively. In most cases, directional helical ...
Bong. A bong with a circular carburetion port in the front of the bowl. A bong (also known as a water pipe) is a filtration device generally used for smoking cannabis, tobacco, or other herbal substances. [1] In the bong shown in the photo, the smoke flows from the lower port on the left to the upper port on the right.
Cathode-ray tube. The only visible differences are the single electron gun, the uniform white phosphor coating, and the lack of a shadow mask. A cathode-ray tube ( CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. [2]
Glass tubes are mainly cylindrical hollow-wares. Their special shape combined with the huge variety of glass types (like borosilicate, flint, aluminosilicate, soda lime, lead or quartz glass), allows the use of glass tubing in many applications. For example, laboratory glassware, lighting applications, solar thermal systems and pharmaceutical ...
Helical extrusion technology is applied in the plastic pipe industry. Basically the production process is a direct extrusion. During the pipe production several different materials - depending on the desired final pipe - are mixed in the extrusion unit according to a special formula depending. The production machine is fed with granule material ...
Helix. (l-r) Tension, compression and torsion coil springs. A machine screw. The right-handed helix (cos t, sin t, t) for 0 ≤ t ≤ 4π with arrowheads showing direction of increasing t. A helix ( / ˈhiːlɪks /; pl. helices) is a shape like a cylindrical coil spring or the thread of a machine screw. It is a type of smooth space curve with ...
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