dynes

Tension may mean: In physics, tension is a force on a body directed to produce strain (extension); it can be considered to be negative compression. It is measured in according units (newton, dynes, pounds-force, etc). Tension is the dominant static force acting on such objects as a vibrating string or a stretched rubber band. Hooke's law states the relation between the stress on an object and the resultant increase in its length. The modulus of elasticity of a spring or elastic string can be use ...

Read more here: » Tension: Encyclopedia - Tension

The bar (symbol bar) and the millibar (symbol mbar, also mb) are units of pressure. They are not SI units, but accepted (although discouraged) for use with the SI. The bar is still widely used in descriptions of pressure because it is about the same as atmospheric pressure. Bar unit - Definition. The bar and millibar are defined as: 1 bar = 100 000 pascals (Pa) = 1 000 000 dynes/square centimetre 1 mbar = 0.001 bar = 100 Pa = 1 000 dyn/cm2 Including:

• Bar unit - Definition
• Bar unit - Origin
• Bar unit - Discussion

Read more here: » Bar unit: Encyclopedia - Bar unit

Atmospheric air pressure is often given in millibars where "standard" sea level pressure is defined as 1013.25 mbar (hPa), equal to (1.01325 bar). Despite millibars' not being an SI unit they are still used locally in meteorology when describing atmospheric pressure. The SI unit is the pascal (Pa), with 1 mbar = 100 Pa = 1 hPa = 0.1 kPa. Meteorologists worldwide have long measured air pressure in millibars. After the introduction of SI units, many preferred to preserve the customary pressure figures. Therefore, some continue to use millibars ...

See also:

Bar unit, Bar unit - Definition, Bar unit - Origin, Bar unit - Discussion

Read more here: » Bar unit: Encyclopedia II - Bar unit - Discussion

The Semiconductor Test Division manufactures test equipment used by integrated circuit manufacturers. As of 2004, Teradyne manufactures three principal tester families of testers known as the Catalyst, Tiger, and Flex. These testers are used by semiconductor manufacturers to test and classify the individual devices ("dice") on a completed semiconductor wafer and then used again to retest the parts once they are enclosed in their final packaging. Tiger testers are capable of testing SOC (Mixed-signal, System on a c ...

See also:

Teradyne, Teradyne - Current divisions, Teradyne - Former divisions, Teradyne - History, Teradyne - Competition

Read more here: » Teradyne: Encyclopedia II - Teradyne - Current divisions

Water striders can stand effortlessly on water due to their non-wetting legs. Writing in Nature, biophysicists Xuefeng Gao and Lei Jiang show that the water resistance of the legs is due to the "special hierarchical structure of the legs, which are covered by large numbers of oriented tiny hairs (microsetae) with fine nanogrooves". They go on to demonstrate that this physical structure is more important than the chemical properties of the wax coating of the legs. Gao and Jiang calculate the maximal supporting force of a single leg to ...

See also:

Water strider, Water strider - Method of propulsion of a water strider, Water strider - Nature of the hydrophobic legs of a water strider

Read more here: » Water strider: Encyclopedia II - Water strider - Nature of the hydrophobic legs of a water strider

Teradyne was founded by Alex d’Arbeloff and Nick DeWolf, who were classmates at the Massachusetts Institute of Technology (MIT) in the late 1940s. The men founded Teradyne in 1960, and set up shop in rented space above Joe and Nemo’s hotdog stand in downtown Boston. In 1961, they sold their first product, a diode tester, to Raytheon. Today, Teradyne operates major facilities in Boston's Chinatown and North Reading, Massachusetts; San Jose and Agoura Hills, California; Fridley, Minnesota, and other locations worldwide. As of October, 2005 ...

See also:

Teradyne, Teradyne - Current divisions, Teradyne - Former divisions, Teradyne - History, Teradyne - Competition

Read more here: » Teradyne: Encyclopedia II - Teradyne - History

Animals such as water striders that live on the surface of water need to push something backwards to generate a reaction force (that is, Newton's third law of motion). It was originally thought that water striders transferred momentum to the water by the creation of capillary waves on the surface. However, biophysicist Mark Denny showed that to do this, some object must move faster than about 0.25 m/s—far faster than a water strider ca ...

See also:

Water strider, Water strider - Method of propulsion of a water strider, Water strider - Nature of the hydrophobic legs of a water strider

Read more here: » Water strider: Encyclopedia II - Water strider - Method of propulsion of a water strider

The word bar finds its origin in the Greek word báros, meaning weight. Its official symbol is "bar"; the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars. The bar and millibar were introduced by Sir Napier Shaw in 1909 and internationally adopted in 1929. ...

See also:

Bar unit, Bar unit - Definition, Bar unit - Origin, Bar unit - Discussion

Read more here: » Bar unit: Encyclopedia II - Bar unit - Origin