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Astronomers Vs Harrison (clock maker) ref Longitude problem
To Andrew
The actual principles behind the use of clocks for determining location was never doubted as an association between the pace of a clock fixed to axial rotation and terrestial longitudes and using noon as a means to convert location into distance,a clock keeping the location/time of the home port.The pace is and always will be 15 degrees per hour exactly. That later hybrid variations such as the shift from noon to midnight for the astronomical and nautical day occured in the late 19th century does not alter the fact that the Equation of Time facilitates the translation of the natural day to the equable 24 hour day and from there into terrestial longitudes and axial rotation. Every single one of you here will use a timepiece that has its roots in Harrison's genius and every one of you will use the principles which keep the pace of a clock fixed to axial rotation at 15 degrees per hour precisely but like your miserable and stupid cataloguing descendents you will deny the principles and still not give Harrison his due.This is why the Longitude story has yet to be finished. "The log was kept in ship's time, that is, the local apparent time, adjusted at intervals to the change of longitude: and by old practice an adjustment was made at noon, when the officer taking the latitude sight called "Twelve o'clock, Sir," and the Captain said "Make it so," (though the actual observations for local time were necessarily made morning and afternoon). If it were necessary to establish the accurate time of an event we should have to enquire more particularly whether the time of the nautical day was on that ship carried on from the noon on which it began, or adjusted to the noon on which it ended, or perhaps altered during the night from one to the other, as is more or less the present practice in merchant ships, though H.M. Navy keeps Standard Time. In default of better information we may without serious error (in days of sail) take the recorded hour as in the apparent time of the meridian of longitude mentioned in the account, and for form's sake apply the equation of time to reduce to civil time of the meridian." http://www.aandc.org/research/nautic..._and_date.html |
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Astronomers Vs Harrison (clock maker) ref Longitude problem
Andrew Robert Breen wrote: snip The navy taught longitude by lunars and by Jovian eclipses at least into the 1950s - my father used longitude-by-lunars in the 1940s in the South Atlantic after their chronometers went iffy after they dropped a shallow depth-charge pattern. I'd not be surprised if lunars weren't finally dropped until after DECCA and LORAN were available. Far be it for me to dispute matters astronomical with Dr Breen, however I do have in my possession Admiralty Navigation Manuals I, II and III of 1938 and 1955 (BR 45). In none of these tomes are longitude by lunars or Jovian eclipses discussed - at least as far as I can see! In other words they were not on the syllabus for a qualified Navigating officer. However that's not to say they weren't taught at Navigation school - just "not officially". Eugene Griessel |
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Astronomers Vs Harrison (clock maker) ref Longitude problem
To Eugene
Dr Breen here comes from the same peevish and miserable breed that could not grant Harrison the prize even though King George demanded that they do,the miserable guy still imagines that Harrison's solution is still inferior to the hybrid lunars and celestial formats that attribute the wrong value for axial rotation through 360 degrees and retain the stellar background for heliocentric astronomy among other things. "Harrison felt "extremely ill used by the gentlemen who I might have expected better treatment from" and decided to enlist the aid of King George III. He asked for and was granted an audience with the King who became extremely annoyed with the Board. King George tested No. 5 himself at the palace and when it had lost only four and a half seconds in ten days he told Harrison to petition Parliament for the full prize. " http://www.captaincooksociety.com/ccsu4112.htm The King would have known that the clock lost 4 secs in ten days because he would have used the Equation of Time correction which was the pre-Copernican noon adjustment that equalised the variations in the length of the natural day to the 24 hour day and was adapted by the heliocentrists to the principles of axial rotation at 15 degrees per hour and 24 hours/360 degres in total. Good to see that England once had monarchs like King George and good people like Harrison,people with authority and common sense.Today you have neither which is why ignorant people like Breen here can still downplay Harrison's achievement while believing in an erroneous value * and justification for the most fundamental motion of all the Earth on its axis. * http://hypertextbook.com/facts/1999/JennyChen.shtml You are traitors to your own people and their achievements so it matters little what you say in my direction. |
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Astronomers Vs Harrison (clock maker) ref Longitude problem
oriel36 wrote: To Eugene Dr Breen here comes from the same peevish and miserable breed that I usually fo not respond to loonies - but I'll make an exception this time: Dr Breen happens to be an old and respected pal of mine whereas you are a sad pathetic individual whose reputation for purveying untenable and unscientific drivel, with zealous fervour, on Usenet is legendary. So please return to your hutch. Eugene Griessel |
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Astronomers Vs Harrison (clock maker) ref Longitude problem
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Astronomers Vs Harrison (clock maker) ref Longitude problem
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Astronomers Vs Harrison (clock maker) ref Longitude problem
On 11 Nov 2005 08:50:19 -0800, in uk.sci.astronomy , "oriel36"
wrote: wrote: oriel36 wrote: Dr Breen here comes from the same peevish and miserable breed that Dr Breen happens to be an old and respected pal of mine Let me rephrase,the whole lot of you are that peevish and stupid breed Why don't you children go have this argument in the playground? If there was anyone here with a trace of goodness they would make an effort to correct this dismal situation where fools believe that the Earth rotates through 360 degrees in 23 hours 56 min 04 sec. Oh, gawd, you really are a chump. That it has been years since I outlined how the pre-Copernican astronomers derived the equable 24 hour day from the natural unequal So bleedin what? We don't live in the pre-Copernican age. Approximations used in the past have no bearing on the present, except as interesting background. Consider the Bohr model of the atom. -- Mark McIntyre CLC FAQ http://www.eskimo.com/~scs/C-faq/top.html CLC readme: http://www.ungerhu.com/jxh/clc.welcome.txt ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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Astronomers Vs Harrison (clock maker) ref Longitude problem
Craig Oldfield wrote: In article .com, says... Let me rephrase, Jesus, you really are a tedious little turd, I bet you were regularly beaten up as a youngster. -- Craig Oldfield It is because I worked and respect the men who use GPS every day as a living and who know the characteristics of the seas as our ancestors knew them that I can come here and highlight you and your colleaguers as an effiminate bunch who are a cancer to astronomy and to your nation.Prop up Isaac as an intellectual giant and you underrmine people like Harrison who were genuine benefactors to humanity. I have known the Bay of Biscay lows and the South Tasman Rise storms yet most of the concerns of men who make their living on the seas and in harsh working conditions is to protect their children and their families.Your Saturday night brawl response is true to your effiminate character for there is true toughness that you could not last 5 minutes with and it shows in what you believe. The gift of being a 'contemplative astronomer' * is now a curse in this dismal era yet ,as a Christian,I would not have it any other way ..Physical toughness wanes but leaves the unflinching trait behind and even if I were to stop highlighting the misconduct of effiminate and ridiculous people who have hijacked the work of the great astronomers and civilisations ,I would not be ashamed to stand in the presence. Give yourselves all the titles you wish,none of you match the description of contemplative astronomer - "To set down in books the apparent paths of the planets [vias planetarum apparentes] and the record of their motions is especially the task of the practical and mechanical part of astronomy; to discover their true and genuine path [vias vero veras et genuinas] is . . .the task of contemplative astronomy; while to say by what circle and lines correct images of those true motions may be depicted on paper is the concern of the inferior tribunal of geometers" Kepler 'Mysterium Cosmographicum' |
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Astronomers Vs Harrison (clock maker) ref Longitude problem
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Astronomers Vs Harrison (clock maker) ref Longitude problem
well my original post provoked a friendly discussion I see!!
"Mark McIntyre" wrote in message ... On 11 Nov 2005 08:50:19 -0800, in uk.sci.astronomy , "oriel36" wrote: wrote: oriel36 wrote: Dr Breen here comes from the same peevish and miserable breed that Dr Breen happens to be an old and respected pal of mine Let me rephrase,the whole lot of you are that peevish and stupid breed Why don't you children go have this argument in the playground? If there was anyone here with a trace of goodness they would make an effort to correct this dismal situation where fools believe that the Earth rotates through 360 degrees in 23 hours 56 min 04 sec. Oh, gawd, you really are a chump. That it has been years since I outlined how the pre-Copernican astronomers derived the equable 24 hour day from the natural unequal So bleedin what? We don't live in the pre-Copernican age. Approximations used in the past have no bearing on the present, except as interesting background. Consider the Bohr model of the atom. -- Mark McIntyre CLC FAQ http://www.eskimo.com/~scs/C-faq/top.html CLC readme: http://www.ungerhu.com/jxh/clc.welcome.txt ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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