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Calcium Carbide plus water equals Acetylene. Acetylene burns and gives off heat and light. Horseless carriages from turn of the century used this combination in lanterns on the fenders or mounted somewhere on the front of the strange velocipedes to light their way home from Grandma's house....or the tavern or wherever. Even before the advent of the first automobiles the lanterns were used on all sorts of horse drawn carriages, wagons, and buggies as well as being used as walking lanterns. Then came the discovery of the mystic power of the rapid oxidation qualities of a flame on ferrus materials if acetylene was combined with pressurized oxygen and forced through an orifice of a specific size. The famous Oxygen/Acetylene torch was created !!
Few realize that a torch really doesn't 'cut' metal. The torch creates the heat that causes rapid acceleration of the atoms (molecular structure) of the ferrous metal to the point they can be literally blown apart with the addition of the force of the oxygen to the now orange/white hot material. So in theory...if you want to stretch your imagination a little... rapid oxidation occurs in a controlled manner by adding the oxygen blast to those molecules moving so rapidly in an accelerated motion not visible to the naked eye. If you add just a little more heat the physical weight of the effected molecules will literally fall out of the parent metal in a blob...OR....you control a blast of oxygen to create a nice even removal of those molecules of metal by the aforementioned process of rapid oxidation.
Now what you've just read above is not based on any factual evidence...it is just an accumulation of random thoughts put together over the years as I burnt literally hundreds of tanks of oxygen and acetylene. Fast Forward to now when we ironically do a 'throwback' to the old days to take a look at this...the actual precursor of today's modern torch we all know and love. Unfortunately I don't know for sure that all the descriptions in the video are factually correct either. Yes, it does create acetylene and it is a torch, but one or two things describing the WAY it does it could very possibly be incorrect. If there is an old guy out there that really KNOWS all the details of this machine I would enjoy their input.
I wonder some times if the alchemists of 2000 years ago ever thought their accidental discoveries while attempting to turn lead into gold would benefit mankind as much as the discovery of acetylene gas 1800 years later. Of course by then they were simply called 'chemists'....or so I think. But without their incessant tinkering around with things that could possibly do severe bodily harm to themselves and the neighbors chickens, mankind could NOT have advanced as quickly as it has. That is something to be thankful for....I think.
I wish I had more knowledge of the subject about which I speak in the video, but unfortunately you get what you got ...that's all I have. I hope you liked at least looking at something you more than likely hadn't known existed before watching this video.