Search results
Results from the WOW.Com Content Network
186 etched glass at Bankfield Museum. Glass etching, or "French embossing", is a popular technique developed during the mid-1800s that is still widely used in both residential and commercial spaces today. Glass etching comprises the techniques of creating art on the surface of glass by applying acidic, caustic, or abrasive substances.
5D optical data storage (also branded as Superman memory crystal, [1] a reference to the Kryptonian memory crystals from the Superman franchise) is an experimental nanostructured glass for permanently recording digital data using a femtosecond laser writing process. [2]
By 1709 a German optician and glass grinder named Themme (or Temme) made moving lantern slides, including a carriage with rotating wheels, a cupid with a spinning wheel, a shooting gun, and falling bombs. Wheels were cut from the glass plate with a diamond and rotated by a thread that was spun around small brass wheels attached to the glass wheels.
Body cameras have a range of uses and designs, of which the best-known use is as a police body camera. Other uses include action cameras for social and recreational (including cycling ), within the world of commerce , in healthcare and medical use, in military use, journalism , citizen sousveillance , and covert surveillance .
Beaker with soldier and civilian shaking hands, Bohemian glass, later 19th century. Engraved glass is a type of decorated glass that involves shallowly engraving the surface of a glass object, either by holding it against a rotating wheel, or manipulating a "diamond point" in the style of an engraving burin.
A police officer wearing a body camera on his uniform. In policing equipment, a police body camera or wearable camera, also known as body worn video (BWV), body-worn camera (BWC), or body camera, is a wearable audio, video, or photographic recording system used by police to record events in which law enforcement officers are involved, from the perspective of the officer wearing it.
These can be efficiently hidden from just one camera but can be more complicated to set up and their placement may be inferior in a multiple-camera setup. Another drawback is in the usage of recording capacity, as a four-camera setup may use (depending on the cameras involved) up to four times as much film (or digital storage space) per take ...
Tag created using glass etching. Glass etching is a method of creating graffiti using a strong acid solution. [1] Apart from the creation of decorative windows, the etching technique itself has also spread to the field of graffiti subculture mainly due to its permanence. Graffiti created in this way can only be removed by grinding the affected ...