Wires, burning

Magnesium wire burns violently in an atmosphere of nitrogen dioxide or dinitrogen tetroxide. 

Fig. 14.3 Pressure versus burning time curves for a wired burning, an external-internal burning, and an end burning.

Wire Burning Rate Along Wire, in. /sec. Ratio of Burning Rate Along Wires to Standard Ratea Properties of the Metal Thermal Diffusivity Melting at 650° C., Temperature, sq. cm./sec. °C. ... 

FIGURE 26.2 Spearman ranking order correlation between time to peak heat release rate (TTPHRR) and single wire burn. (From Cogen, J.M. et al., Assessment of flame retardancy in polyolefin-based non-halogen FR compounds, In Proceedings of the 53rd IWCS/Focus International Wire and Cable Symposium, 2004, pp. 185-190.)... 

Fuse Wire Correction. This correction is made by measuring the length (in cm.) of wire burned and multiplying it by the known heat of combustion per centimeter of the wire (2.8 cal./cm). 

The purpose of the Berkeley project was to understand how gas clouds traveled and dissipated over various terrains and micro-meteorological conditions. They developed new instruments to make such studies. If an electrical current flows through a platinum wire, it may become red hot, and its temperature was easily measured. If air flowed over the hot wire, its temperature was lowered, and the faster the air flows the more the temperature is lowered. The Berkeley group measured wind speed by use of this hot-wire anemometer. If air contains some butane, for example, the hot platinum wire burns the butane, and the heat of combustion causes... 

Properties.—A gas, colourless, tasteless, inodorous. Specific gravity (air=l 000) 1T026, or, according to Thomson, I llll. A burning body, as a match of wood or paper, burns in the gas with greatly increased brilliancy a spark on a piece of wood bursts out into flame. Iron wire burns in it, when heated white hot, with beautiful sparks. Phosphorus burns in it with an intense dazzling white light, c. 

Iron in the form of fine wire burns in oxygen to form iron(in) oxide. 

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