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Spontaneous glass breakage is a phenomenon by which tempered glass may spontaneously break without any apparent reason. The most common causes are: [13] [14] Internal defects within the glass such as nickel sulfide inclusions. Nickel sulfide defects can cause spontaneous breakage of tempered glass years after its manufacturing. [15]
The second experiment was based on the theory of cohesion - that "two smooth bodies, such as marble or glass discs, can be made spontaneously to cohere when pressed against each other". [13] Boyle's idea was that if two cohered discs were placed in the receiver of the air-pump they would spontaneously separate without the air's pressure to keep ...
Annealing is a process of slowly cooling hot glass objects after they have been formed, to relieve residual internal stresses introduced during manufacture. Especially for smaller, simpler objects, annealing may be incidental to the process of manufacture, but in larger or more complex products it commonly demands a special process of annealing in a temperature-controlled kiln known as a lehr. [1]
“Next time Marco Rubio should drink his water from a glass as opposed to a bottle — would have much less negative impact,” the president tweeted at the time. Social media quickly took notice ...
Ninja rocks take advantage of the physical properties of tempered glass, disrupting surface compressive stress and causing the glass to shatter. Tempered glass, which is used for the side windows of most vehicles, is manufactured with an extremely high surface compressive stress and high internal tensile stress. This gives it strength and ...
According to Petronius (c. 27 AD – c. 66 AD) in his work Satyricon, an inventor brought a drinking bowl to the Roman emperor Tiberius made of vitrum flexile – translated as either flexible or unbreakable glass – which did not shatter but merely dented. Tiberius asked if anyone else was aware of the invention.
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Glass cutter, showing hardened steel cutting wheel (far left), notches for snapping, and ball (on end of handle) for tapping. A glass cutter is a tool used to make a shallow score in one surface of a piece of glass (normally a flat one) that is to be broken in two pieces, for example to fit a window.