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In electrical and safety engineering, hazardous locations (HazLoc, pronounced haz·lōk) are places where fire or explosion hazards may exist. Sources of such hazards include gases, vapors, dust, fibers, and flyings, which are combustible or flammable. Electrical equipment installed in such locations can provide an ignition source, due to ...
The Knight's Cross with Oak Leaves, Swords and Diamonds is based on the enactment Reichsgesetzblatt I S. 613 of 28 September 1941 to reward those servicemen who had already been awarded the Oak Leaves with Swords to the Knight's Cross of the Iron Cross. Ultimately, it would be awarded to twenty-seven German soldiers, sailors and airmen, ranging ...
Thermal transmittance. Thermal transmittance is the rate of transfer of heat through matter. The thermal transmittance of a material (such as insulation or concrete) or an assembly (such as a wall or window) is expressed as a U-value. The thermal insulance of a structure is the reciprocal of its thermal transmittance.
W2×4.6d 1 12 V: 2.3 W T5 size WY2.3W W2×4.6d 1 12 V: 2.3 W Amber W3W W2.1×9.5d 1 6 V, 12 V, 24 V: 3 W T10 size Old designation: W10/3 W5W W2.1×9.5d 1 6 V, 12 V, 24 V: 5 W ECE nominal luminous flux: 50 lm ±20% T10 size Old designation: W10/5 ANSI № 168 WR5W W2.1×9.5d 1 12 V & 24 V: 5 W Red WY5W W2.1×9.5d 1 6 V, 12 V, 24 V: 5 W
The Turabay dynasty was a family of Bedouin emirs who governed the district of Lajjun in northern Palestine during Ottoman rule in the 16th–17th centuries. The family's forebears had served as chiefs of Jezreel Valley during Mamluk rule in the late 15th century. During the Ottoman conquest of the region in 1516–1517, the family aided ...
A temperature coefficient describes the relative change of a physical property that is associated with a given change in temperature. For a property R that changes when the temperature changes by dT, the temperature coefficient α is defined by the following equation: Here α has the dimension of an inverse temperature and can be expressed e.g ...
Thermal diffusivity. In heat transfer analysis, thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure. [ 1] It is a measure of the rate of heat transfer inside a material. It has units of m 2 /s. Thermal diffusivity is usually denoted by lowercase alpha ( α ), but a, h, κ ( kappa ...
The kelvin, symbol K, is the base unit of measurement for temperature in the International System of Units (SI). The Kelvin scale is an absolute temperature scale that starts from 0 K, the lowest possible temperature (absolute zero), then rises by exactly 1 K for each 1 °C.