Showing posts with label ENGINE. Show all posts
Showing posts with label ENGINE. Show all posts
Friday, 8 February 2013
14:49 | 
Posted by
Unknown
Charles Babbage and his Difference Engine #2 Tube. Duration : 5.80 Mins.
[Recorded: April 2008] Charles Babbage (1791-1871), computer pioneer, designed the first automatic computing engines. He invented computers but failed to build them. The first complete Babbage Engine was completed in London in 2002, 153 years after it was designed. Difference Engine No. 2, built faithfully to the original drawings, consists of 8000 parts, weighs five tons, and measures 11 feet long. OVERVIEW - In London, during the summer of 1821, Charles Babbage, inventor and mathematician, is poring over a set of astronomical tables calculated by hand. Finding error after error he finally exclaims 'I wish to God these calculations had been executed by steam'. His appeal to machinery, in one of the most resonant utterances of the 19th century, was the start of a new era of automatic computation. It was not only the grindingly tedious labor of verifying a sea of figures that exasperated Babbage, but their daunting unreliability. Engineering, astronomy, construction, finance, banking and insurance depended on printed tables for calculation. Ships navigating by the stars relied on printed tables to find their position at sea. The stakes were high. Capital and life were thought to be at risk. Babbage embarked on an ambitious venture to design and build mechanical calculating engines to eliminate the risk of human error in the production of printed tables. The 'unerring certainty of machinery' would solve the problem of human fallibility. His work on the engines led him from ...
[Recorded: April 2008] Charles Babbage (1791-1871), computer pioneer, designed the first automatic computing engines. He invented computers but failed to build them. The first complete Babbage Engine was completed in London in 2002, 153 years after it was designed. Difference Engine No. 2, built faithfully to the original drawings, consists of 8000 parts, weighs five tons, and measures 11 feet long. OVERVIEW - In London, during the summer of 1821, Charles Babbage, inventor and mathematician, is poring over a set of astronomical tables calculated by hand. Finding error after error he finally exclaims 'I wish to God these calculations had been executed by steam'. His appeal to machinery, in one of the most resonant utterances of the 19th century, was the start of a new era of automatic computation. It was not only the grindingly tedious labor of verifying a sea of figures that exasperated Babbage, but their daunting unreliability. Engineering, astronomy, construction, finance, banking and insurance depended on printed tables for calculation. Ships navigating by the stars relied on printed tables to find their position at sea. The stakes were high. Capital and life were thought to be at risk. Babbage embarked on an ambitious venture to design and build mechanical calculating engines to eliminate the risk of human error in the production of printed tables. The 'unerring certainty of machinery' would solve the problem of human fallibility. His work on the engines led him from ...
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Monday, 24 December 2012
19:44 |
Posted by
Unknown
Working Model of Stephenson's STEAM ENGINE made of GLASS ! Rare! Tube. Duration : 2.28 Mins.
This Model of Stephenson's Steam Engine was made in 2008 by master glassblower Michal Zahradník. Highlights: * The crankshaft is glass. The piston is glass. The counterweight that makes the wheel spin evenly is glass. Imagine that everything is made out of glass. * There are no sealants used. All is accomplished by a perfectly snug fit. The gap between the piston and its compartment is so small, that the water that condensates from the steam seals it shut! * Notice the elaborate excessive steam exhaust system next to the piston. * The piston is the most arduous part to make due to to extreme level of precision needed. Its parts have to be so accurate that no machinery is of use here. The piston and its cylinder must be hand sanded to perfection, and they are very likely to crack in the process! On average, three out of four crack.
This Model of Stephenson's Steam Engine was made in 2008 by master glassblower Michal Zahradník. Highlights: * The crankshaft is glass. The piston is glass. The counterweight that makes the wheel spin evenly is glass. Imagine that everything is made out of glass. * There are no sealants used. All is accomplished by a perfectly snug fit. The gap between the piston and its compartment is so small, that the water that condensates from the steam seals it shut! * Notice the elaborate excessive steam exhaust system next to the piston. * The piston is the most arduous part to make due to to extreme level of precision needed. Its parts have to be so accurate that no machinery is of use here. The piston and its cylinder must be hand sanded to perfection, and they are very likely to crack in the process! On average, three out of four crack.
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