Search results
Results From The WOW.Com Content Network
Caesium fluoride sample on a watch glass. A watch glass is a circular concave piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, for heating a small amount of substance, and as a cover for a beaker.
Circuit board of an e block from a chronograph-wristwatch.The quartz crystal oscillator can be seen on right. Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time.
Backside view of an automatic watch with exhibition case back, showing its movement.The semicircular central rotor which winds the mainspring is plainly visible. Video of the rotor turning in an automatic wristwatch having a glass back, when the watch is moved by hand
Three beakers, an Erlenmeyer flask, a graduated cylinder and a volumetric flask. Laboratory glassware is a variety of equipment used in scientific work, traditionally made of glass.
Fused quartz is produced by fusing (melting) high-purity silica sand, which consists of quartz crystals. There are four basic types of commercial silica glass: Type I is produced by induction melting natural quartz in a vacuum or an inert atmosphere.
An analog watch A method to identify north and south directions using the sun and a 12-hour analogue clock or watch set to the local time, 10:10 a.m. in this example. An analog watch (American) or analogue watch (UK and Commonwealth) is a watch whose display is not digital but rather analog with a traditional clock face.
Savonette with cathedral hands and luminescent dial made by Thos. Russell & Son (probably in the 1920’s) A golden pocket watch with hunter-case and watch chain Pocket watches evolved from clock-watches, supposedly called Nuremberg eggs, worn on chains around the neck.
Automobile windshield with "spider web" cracking typical of laminated safety glass. Laminated glass is a type of safety glass consisting of two or more layers of glass with one or more thin polymer interlayers between them which prevent the glass from breaking into large sharp pieces. [1]