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One-way mirrors for upper-level observation deck viewing down into a classroom (University of Wisconsin-Eau Claire) A one-way mirror, also called two-way mirror [1] (or one-way glass, half-silvered mirror, and semi-transparent mirror), is a reciprocal mirror that appears reflective from one side and transparent from the other. The perception of ...
Flexible glass is an alleged lost invention from the time of the reign of Tiberius Caesar. The story is often doubted. [1] Mythology. According to Petronius (c ...
One-way windows One-way windows can be made to work with polarized light in the laboratory without violating the second law. This is an apparent paradox that stumped some great physicists, although it does not allow a practical one-way mirror for use in the real world. [61] [62] Optical isolators are one-way devices that are commonly used with ...
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Tempered or toughened glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared with normal glass.
NASA is working on a set of augmented reality glasses for astronauts aboard the International Space Station. The agency is partnering with Osterhout Design Group, which has been building high-tech ...
I have heard people say two-way mirror, but I have heard people say a lot of things. I have understood "one way" mirror in the following sense: That the glass is highly reflective, but far from opaque. As a result, under the circumstances in which it is used, glass acts as a mirror in "one way"/one "direction" and as a "window" in the other.
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.