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In 3D printing, the printing speed is a measure for how much material is printed per unit of time (/). It's an important parameter for the time it takes to print, and can affect the quality of the print. Units used varies depends on the type of additive manufacturing technique.
Microwaves are especially suitable for this use since they are more easily focused into narrower beams than radio waves, allowing frequency reuse; their comparatively higher frequencies allow broad bandwidth and high data transmission rates, and antenna sizes are smaller than at lower frequencies because antenna size is inversely proportional ...
The millimetre (SI symbol: mm) is a unit of length in the metric system equal to 10 −3 metres ( 1 / 1 000 m = 0.001 m). To help compare different orders of magnitude , this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm).
The size of household microwave ovens can vary, but usually have an internal volume of around 20 liters (1,200 cu in; 0.71 cu ft), and external dimensions of approximately 45–60 cm (1 ft 6 in – 2 ft 0 in) wide, 35–40 cm (1 ft 2 in – 1 ft 4 in) deep and 25–35 cm (9.8 in – 1 ft 1.8 in) tall. [29]
Electromagnetic – microwave ovens, wireless LANs and cordless phones (starting in 1998) 2.6–3.8 GHz: A common desktop CPU speed as of 2014 5.8 GHz: Electromagnetic – cordless telephone frequency introduced in 2003 10 10: 10 GHz: 3 GHz to 30 GHz: Electromagnetic – super high frequency: 60 GHz
Radio bands where microwave antennas are commonly deployed in 2016 FCC [2] C band: 4 to 8 GHz: 3.75 cm to 7.5 cm 4 GHz, 6 GHz X band: 8 to 12 GHz: 25 mm to 37.5 mm 10 GHz, 11 GHz K u band: 12 to 18 GHz: 16.7 mm to 25 mm 12 GHz, 18 GHz K band: 18 to 26.5 GHz: 11.3 mm to 16.7 mm 18 GHz K a band: 26.5 to 40 GHz: 5.0 mm to 11.3 mm 23 GHz, 31 GHz Q band
The first group of metric units are those that are at present defined as units within the International System of Units (SI). In its most restrictive interpretation, this is what may be meant when the term metric unit is used. The unit one (1) is the unit of a quantity of dimension one. It is the neutral element of any system of units. [2]
3D printing, or additive manufacturing, is the construction of a three-dimensional object from a CAD model or a digital 3D model. [1] [2] [3] It can be done in a variety of processes in which material is deposited, joined or solidified under computer control, [4] with the material being added together (such as plastics, liquids or powder grains being fused), typically layer by layer.
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