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Sugar Snake
"Black snake" is a term that can refer to two similar types of firework, the Pharaoh's snake and the sugar snake. The "Pharaoh's snake" or "Pharaoh's serpent" is the original version of the black snake experiment. It produces a more impressive snake, but its execution depends upon mercury (II) thiocyanate, which is no longer in common use due to its toxicity. For a "sugar snake", sodium bicarbonate and sugar are the commonly used chemicals. Once lit, both fireworks emit smoke and spew out ash resembling a snake via an intumescent reaction. They remain on the ground and emit no sparks, flares, projectiles, or sound. Pharaoh's snake The Pharaoh's snake is a more dramatic experiment, yet it requires more safety precautions than the sugar snake due to the presence of toxic mercury vapor and other mercury compounds. History This reaction was discovered by Wöhler in 1821, soon after the first synthesis of mercury thiocyanate. It was described as "winding out from itself a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Result Of Black Snake Experiment
A result (also called upshot) is the final consequence of a sequence of actions or events expressed qualitatively or quantitatively. Possible results include advantage, disadvantage, gain, injury, loss, value and victory. There may be a range of possible outcomes associated with an event depending on the point of view, historical distance or relevance. Reaching no result can mean that actions are inefficient, ineffective, meaningless or flawed. Some types of result are as follows: * in general, the outcome of any kind of research, action or phenomenon * in games (e.g. cricket, lotteries) or wars, the result includes the identity of the victorious party and possibly the effects on the environment * in mathematics, the final value of a calculation (e.g. arithmetic operation), function or statistical expression, or the final statement of a theorem that has been proven * in statistics, any information analyzed, extracted or interpolated from polls, tests or logs * in co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
