Sparks brightness

The element has a metallic, bright silver luster. It is relatively stable in air at room temperature, and is readily attacked and dissolved, with the evolution of hydrogen, but dilute and concentrated mineral acids. The metal is soft enough to be cut with a knife and can be machined without sparking if overheating is avoided. Small amounts of impurities can greatly affect its physical properties. 

Nitrogen Triiodide, NI3, mw 394.77, N 3.5% a black powd, detons when dry, exposed to light, or an elec spark (Refs 8 10) Qf 35kcal/mole (Ref 7). It is formed by the interaction of free 1 or I3" on liq, gaseous, or aq ammonia (Refs 1, 8 10). N triiodide forms a series of solvates with excess ammonia NI3.NH3) bright red needles, explds when dry (Ref 2). 

It was fun to think about how I should dress, speak, move, and touch, to talk of type-foundries and colophons, watermarks and printers patrons, and all the time watch a mans hands, the tilt of his head, the way his mouth moved as he spoke, the way his fingers brushed mine as he put more drinks on the table. It was fun that could fill my head and then my body, that bright, dumb spark in a man s eye that made my skin shiver in response. And we were away from home, after all, it was only a week, and the sun was shining on the Venice canals, or the moon was rising from behind the Rockies, or the coal fire in my rooms was so glowing that it shut out the gray cold and the Lancashire rain, and wrapped us in warmth. 

Tero Great This is exactiy what I saw in my test with the HV-triggered 110V AC arc. The bright blue is the standard ignition coii spark and the white flash is the 110V AC arc. 

Gentlemen, I took my double coil (the one in the photos section) and placed an old SPRAGUE BUFFER (.002-16,000 volt) capacitor from the top of the plug to the base., cathode to hot. (part number MD-D2). It increased a Sms spark from a 20,000 volt Chevy coil so much that it screeches when it fires. Very bright. Haven t tried it in the motor yet but I thought it was significant enough to mention. If you wind a coil like this make sure you wind both layers in the same direction. There may well be a better ratio of turns and a better way to amplify this. I just used a coil which I had already made. 

Can be used in a tube without a choke or nozzle, to give bright silver sparks. 

A further factor that contributes to the overall appearance of a firework fountain is the brightness of the sparks. As with colour, the brightness is dependent upon the temperature and characteristics of the material used. The brightness of black body radiation varies with temperature as shown in Figure 5.5. 

Most of us have never seen the inside of a coal-fired boiler, but the sparks rising from a campfire are very similar to the second stage of a coal-burning process. When a campfire is stirred, small particles of charcoal are broken off the log, and buoyancy carries them upward. They glow brightly by the heat released by heterogeneous carbon oxidation for several seconds until the carbon is aU consumed. 

Example 10-2 Everyone has poked a campfire at night and watched the sparks fly up. They glow a bright red, which indicates that they are emitting blackbody radiation from a source with a surface temperature of -1200°C. You have also noticed (if you were thinking about scientific matters at the time) that their color does not change until they suddenly disappear. The time for this reaction varies, but they seem to glow for a few SdC and then suddenly disappear. 

The harnessing of electricity led to the manufacturing of magnesium and aluminum metals by electrolysis in the latter part of the 19th century, and bright white sparks and white light could... 

Large flakes, called "flitter" aluminum, are widely used by the fireworks industry to produce bright white sparks. A special "pyro" grade of aluminum is also available from some suppliers. This is a dark gray powder consisting of small particle sizes and high surface area and it is extremely reactive. It is used to produce explosive mixtures for fireworks, and combinations of oxidizers with this "pyro" aluminum should only be prepared by skilled personnel, and only made in small batches. Their explosive power can be substantial, and they can be quite sensitive to ignition. 

Iron, Powder for Pyrotechnics. Sidorov et al claim a spark-forming composition for ppg fireworks which forms bright sparks of different colors, containing a thermal mixt a metal powder, eg (%wt) . NFLtClC 55 5, urotopine 14 2, iditol 8 2, metal powder (Fe or steel chips, powdered Al or its alloy with Mg) 23 5 (Ref 2)... 

Carbon monoxide burns in air or O with a bright blue flame, forming C02. A mixt of 2 vols CO 1 vol O expl when ignited by a spark. The dry gases do not expl unless a trace of moisture, or a gas which contains H and so produces HzO on combustion in O, is present. This expl reaction has been studied by a number of investigators(Refs 4,11,12,14,15,17,18 19). The spontaneous ignition of CO and some of the factors controlling it are discussed by Warren(Ref 13)... 

Neither No. 128 nor 129 is bright enough to make much of a show if the colored fire is also burning. When they bum to an end, the fire is communicated to the colored composition at the same time the bright diamond composition, either No. 149 or 152, commences to bum. No. 149 produces a splendid aureole of silver-white flowers. These flowers are less developed than those produced by steel wool and make a different effect from the latter. 40 No. 152 produces a splendid effect—no inflamed disc, no reddish sparks—numerous jasmine flowers of all dimensions forming a vast aureole of a striking white. 41... 

Eros took the sword from the Hero s hand, placed the hilt against his breast, and set the point forward. The double doors of the hall flew open and Eros approached the sleeping Freya in ecstasy. Suddenly there was a crash of thunder. A glowing spark leapt from the princess to the sword the sword and chain grew bright. The Hero caught up little Fable, who was close to fainting. The plume of Eros helmet waved erect. 

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