Electric sparks, discharge

Fig. 20 Schematic representation of an electric spark discharge chamber for the activation of gases at normal atmospheric pressure for the production of fluorescence in substances separated by thin-layer chromatography [2].

When submitted, in a glass vessel, to the electric spark discharge, or when heated to 400° C., gradual decomposition sets in, with formation of sulphur dioxide and fluorine, the latter giving rise to silicon tetrafluoride, and the total change being representable by the equation ... 

Electricity has generally been recognized as a probable promoter of organic synthesis going back billions of years. A report by Sutherland and Whitfield summarizes some of the evidence for this.82 Thus, electrical spark discharges in the presence of simple molecules believed to be present in the planet s prebiotic atmosphere have been shown to produce a few of the building blocks needed for the creation of life. The sun also provided other forms of energy (e.g., infrared and ultraviolet radiation, inter alia). Some of the processes proved by laboratory experiments are ... 

Method of Electric Sparks Discharge for Producing Aluminium-... 

Table 3 shows the parameters of Al(OH)3 particles received by the electric spark discharge method. 

W. G. Mixter 5 has recently investigated the combustion phenomena of several hydrocarbons by means of a weak electric spark discharge, and has proven among other things that ethylene can. also yield acetic acid besides carbonic acid. The pressure under which the gases react is important for the course of the experiment. Mixter sought to determine the relative reaction velocities as compared with that of an oxyhydrogen mixture, under equal conditions. 

The minimum ignition energy is simply the minimum energy necessary to cause the ignition of a mixture of flammable gas and oxidizing gas within the flammable range. It is usually measured by an electrical spark discharge because of the ease of the test. 

Urey s suggestion was soon confirmed by Miller (1953) in a historic experiment, in which amino acids were produced from CH, HjO, and NH3 by an electric spark discharge. [The analogous synthesis with UV light was not achieved with high efficiency until much later (Sagan and Khare, 1971)]. A new scientific discipline,... 

Investigation of the final, last chance , filter of the hydraulic circuit and the main online filter of the lubricating oil revealed that static electricity spark discharges, which happen in the online filter in the lubricating oil, damage the oil and that the outside surface of the last chance filter removed the contaminants produced in... 

There are three sources coiranonly used to vaporize and excite the elements in a sample the flame, the electric arc and electric spark discharge. Flames possess the lowest excitation energy, producing a rather simple line spectra. Flame excitation will be discussed when dealing with flame photometry and atomic absorption. 

The electric spark sensitivity or electrostatic sensitivity test determines the minimum amount of energy of an electric spark discharge that will cause initiation of the tested sample. 

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