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Medical Forum / General / Dentistry / April 2005Gutta Percha
Gutta Percha, used in endodontics, but more importantly, used in the Transatlantic Cable. Joel http://collections.ic.gc.ca/canso/earlycab/tech.htm [img]http://collections.ic.gc.ca/canso/earlycab/cmeeting.gif[/img] .. Gutta Percha What was Gutta Percha? This material, found just a few years earlier in Malaya, was introduced to Cyrus Field by Samuel Canning who would come to be a member of the company's English Contingent. From Samuel Canning, Mr. Field learned of the difficulties of keeping the copper wires in the cable insulated from the ocean conductive medium surrounding it. Gutta Percha seemed to have the required properties for this task. Gutta Percha was produced by evaporating the milky fluid of the Gutta Percha Tree and coagulating the latex from which an inelastic firm insulator resulted, one that softened in hot water. It had a distinct advantage over india rubber that had been used in earlier cables because, on cooling, it became hard without becoming brittle. It was ideally suited for underwater use where the cold and pressure improved its insulating qualities. Submersion also kept the cable away from sunlight which had a deteriorating effect on the cable. The crossing was viewed by the scientists involved in the Gutta Percha work as the ultimate test of the material. > Gutta Percha, used in endodontics, but more > importantly, used in the Transatlantic Cable. > > Joel And most importantly, used in golf balls way back when. carabelli > > Gutta Percha, used in endodontics, but more > > importantly, used in the Transatlantic Cable. [quoted text clipped - 4 lines] > > carabelli Really? Interesting. Joel > > > Gutta Percha, used in endodontics, but more > > > importantly, used in the Transatlantic Cable. [quoted text clipped - 10 lines] > > Joel "Creating balls out of Gutta Percha "Gutty" was discovered in 1848 by the Rev. Dr. Robert Adams. The ball was created from the dried sap of the Sapodilla tree. It had a rubber-like feel and was formed into ball shapes by heating it up and shaping it while hot. Almost by accident, it was soon found that balls improperly smoothed often had truer flight than their smooth counterpart. Thus the Hand Hammered Gutta ball was formed. Balls were hammered with a consistent pattern throughout with a sharp edged hammer. After a few years handmade Gutty balls gave way to metal presses which in turn made golf affordable for the lower income golfer. Golf truly became the sport for the masses" Tragically, the golfing industry was unaware Gutta Percha was also a material used in root canal treatment and subsequently had to be toxic. To this day, breakdancing on the course is considered a breach of golf etiquette. carabelli I came across an old golf ball in my father-in-law's basement many years ago. It has very shallow, square-ish dimples. I would guess it's from the 50's. I would have to check at home to find the brand name. Fawks > And most importantly, used in golf balls way back when. > > carabelli As a kid we used to cut golf balls apart for the endless enjoyment of pulling those thousands of rubberbands apart to get at the rubber "core".  Signature~+--~+--~+--~+--~+-- Stephen Mancuso, D.D.S. Troy, Michigan, USA .................................................... This posting is intended for informational or conversational purposes only. Always seek the opinion of a licensed dental professional before acting on the advice or opinion expressed here. Only a dentist who has examined you in person can diagnose your problems and make decisions which will affect your health. ...................... > > I came across an old golf ball in my father-in-law's basement [quoted text clipped - 7 lines] >> >> carabelli > As a kid we used to cut golf balls apart for the endless enjoyment of pulling > those thousands of rubberbands apart... Ah memories! As I recall, they were actually wound with long strings of what we used to call "rubber band stuff". >...to get at the rubber "core". And then you stomp on the core to see how far you can make it splat. Vaughn >> As a kid we used to cut golf balls apart for the endless enjoyment of pulling >> those thousands of rubberbands apart... [quoted text clipped - 7 lines] > >Vaughn Only true for the liquid core ones. -- W_B Take out the G'RBAGE wubbabubbazG@RBAGEyahoo.com > As a kid we used to cut golf balls apart for the endless enjoyment of > pulling those thousands of rubberbands apart to get at the rubber "core". ...As a kid, we used to make gun powder rockets.... SP SignatureFinally: take out the TRASHH Reminds me of what we used to go through back in the 1960's to call relatives in Europe on the telephone. It would take hours to get a connection through multiple operators, and you had to scream into the phone to be heard. It was an event that required you stay home for the entire day waiting for the overseas operator to call you back with the other party on the line. Now we can call Australia while driving down the freeway. Signature~+--~+--~+--~+--~+-- Stephen Mancuso, D.D.S. Troy, Michigan, USA .................................................... This posting is intended for informational or conversational purposes only. Always seek the opinion of a licensed dental professional before acting on the advice or opinion expressed here. Only a dentist who has examined you in person can diagnose your problems and make decisions which will affect your health. ...................... > Gutta Percha, used in endodontics, but more > importantly, used in the Transatlantic Cable. [quoted text clipped - 28 lines] > effect on the cable. The crossing was viewed by the scientists involved in > the Gutta Percha work as the ultimate test of the material. |
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