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Laser marking on stainless steel A laser engraving machine A laser engraver. A laser engraving machine consists of three main parts: a laser, a controller, and a surface. [2] The laser is a drawing tool: the beam emitted from it allows the controller to trace patterns onto the surface.
A laser glass sculpture of a caffeine molecule. A bubblegram (also known as laser crystal, Subsurface Laser Engraving, 3D crystal engraving or vitrography) is a solid block of glass or transparent plastic that has been exposed to laser beams to generate three-dimensional designs inside.
The gain for the laser is provided by a length of rare earth doped optical fiber, with the most common form using Yb 3+ ions as the active lasing ion in the silica fiber. These Yb-doped fiber lasers first operated at the 1 kW CW power level in 2004 [ 32 ] based on free space cavities but were not shown to operate with fiber Bragg grating ...
The laser printer was invented at Xerox PARC in the 1970s. Laser printers were introduced for the office and then home markets in subsequent years by IBM, Canon, Xerox, Apple, Hewlett-Packard and many others. Over the decades, quality and speed have increased as prices have decreased, and the once cutting-edge printing devices are now ubiquitous.
Bangladesh Machine Tools Factory: Industrials Defense Gazipur City: 1979 Defense vehicles S A Bangladesh Petroleum Corporation: Oil & gas Exploration & production Dhaka: 1976 State-owned petrochemical S A Bangladesh Pratidin: Consumer services Publishing Dhaka: 2010 Newspaper P A Bangladesh Railway: Industrials Railroads Dhaka: 1862 Railroads S A
The tank is based on the Type 90-II tank. [1] Around 310 Al-Khalid MBTs had been produced by 2014. [7] The tank has been exported to Bangladesh, Morocco and Myanmar by China. The VT-1A is also known as MBT-2000. The Bangladesh Army ordered 44 MBT-2000s from China in 2011. [8] [9] The Norinco-made MBT-2000 is also used by the Royal Moroccan Army ...