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199109 [2016/04/18 09:56] – tyreless199109 [2016/04/21 14:20] (current) – [A Night At The Observtory.] kennettj
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-=====The Sydney Bushwalker.=====+======The Sydney Bushwalker======
  
 Established June 1931 Established June 1931
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 A monthly bulletin of matters of interest to The Sydney Bush Walkers Incorporated, Box 4476 GPO, Sydney 2001. Club meetings are held every Wednesday evening at 8 pm at Kirribilli Neighbourhood Centre, 16 Fitzroy Street, Kirribilli (near Milson's Point Railway Station). Visitors and prospective members are welcome any Wednesday. To advertise in this magazine please contact the Business Manager. A monthly bulletin of matters of interest to The Sydney Bush Walkers Incorporated, Box 4476 GPO, Sydney 2001. Club meetings are held every Wednesday evening at 8 pm at Kirribilli Neighbourhood Centre, 16 Fitzroy Street, Kirribilli (near Milson's Point Railway Station). Visitors and prospective members are welcome any Wednesday. To advertise in this magazine please contact the Business Manager.
  
-|Editor|Judy. O'Connor, 43 Pine Street, Cammeray 2062. Telephone 929 8629| +|**Editor**|Judy. O'Connor, 43 Pine Street, Cammeray 2062. Telephone 929 8629| 
-|Business Manager|Joy Hynes, 36 Lewis Street, Dee Why 2099. Telephone 982.2615 (H), 888 3144 (Business)| +|**Business Manager**|Joy Hynes, 36 Lewis Street, Dee Why 2099. Telephone 982.2615 (H), 888 3144 (Business)| 
-|Production Manager|George Gray - Telephone 876 6263| +|**Production Manager|George Gray - Telephone 876 6263| 
-|Typist|Kath Brown| +|**Typist**|Kath Brown| 
-|Illustrator|Morag Ryder| +|**Illustrator**|Morag Ryder| 
-|Printers|Kenn Clacher, Lee Powell, Margaret Niven, Barrie Murdoch & Kay Chan|+|**Printers**|Kenn Clacher, Lee Powell, Margaret Niven, Barrie Murdoch & Kay Chan|
  
 ====September 1991==== ====September 1991====
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 For many years Bob was doctor for the Bush Walkers Search & Rescue Organisation, and was always available when called out. On these troubled occasions his wise and compassionate understanding soothed both the victims and the distraught relatives. For many years Bob was doctor for the Bush Walkers Search & Rescue Organisation, and was always available when called out. On these troubled occasions his wise and compassionate understanding soothed both the victims and the distraught relatives.
  
-He was.happy,walking in the Blue Mountains, at Kanangra, the Warrumbungles and in Tasmania, and also skiing in the Kosciusko area, and was a member of the University Alpine Club. Friends remember many fine weekends skiing and laying cork tiles on the floor of the U.A.C. Hut, and drinking "red-eyes" (red wine).+He was happy walking in the Blue Mountains, at Kanangra, the Warrumbungles and in Tasmania, and also skiing in the Kosciusko area, and was a member of the University Alpine Club. Friends remember many fine weekends skiing and laying cork tiles on the floor of the U.A.C. Hut, and drinking "red-eyes" (red wine).
  
-We say "Goodbye" to a profound and lovable person, and offer our condolences to his wife, Nan, daughter Gwaine, his brother, Christopher and sister Nell.+We say "Goodbye" to a profound and loveable person, and offer our condolences to his wife, Nan, daughter Gwaine, his brother, Christopher and sister Nell.
  
 =====Obituary - Roy Braithwaite.===== =====Obituary - Roy Braithwaite.=====
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 by Kath Brown by Kath Brown
  
-=====A Night At The Observtory.=====+=====A Night At The Observatory.=====
  
 by Alex Colley by Alex Colley
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 After this we went back to the theatre for further videos and questions. How is distance measured? The angle of the earth to the nearer stars is measured from opposite sides of the Earth's orbit. This enables the computation of a triangle with the base line Earth's orbit the angles on either side of the base line and from that the distance to the apex of the triangle. This doesn't work if the stars are very distant, but there is another method. There is a star type known as a Cepheid variable which becomes brighter or dimmer at regular intervals. They are known to be about the same size, and distance of a galaxy can be calculated by brightness if one is found. After this we went back to the theatre for further videos and questions. How is distance measured? The angle of the earth to the nearer stars is measured from opposite sides of the Earth's orbit. This enables the computation of a triangle with the base line Earth's orbit the angles on either side of the base line and from that the distance to the apex of the triangle. This doesn't work if the stars are very distant, but there is another method. There is a star type known as a Cepheid variable which becomes brighter or dimmer at regular intervals. They are known to be about the same size, and distance of a galaxy can be calculated by brightness if one is found.
  
-At the end of the evening we were shown a video which simulated a journey from the earth at distances measured in multiples of 10. At somewhere round 10 to the power of 5 we could see the whole earth. Then we could see the whole solar system and eventually, at 10 to the power of 23, our galaxy as a small blur. Then we came back again to the earth. We didn't stop there but went down to ever smaller particles - cells, atoms, protons and quarks. Is there a limit to space? Einstein said there was, of a sort. Are quarks made up of smaller particles? Perhaps we will never know. Nor will we ever know how it was all organised or why it'is there at all.+At the end of the evening we were shown a video which simulated a journey from the earth at distances measured in multiples of 10. At somewhere round 10 to the power of 5 we could see the whole earth. Then we could see the whole solar system and eventually, at 10 to the power of 23, our galaxy as a small blur. Then we came back again to the earth. We didn't stop there but went down to ever smaller particles - cells, atoms, protons and quarks. Is there a limit to space? Einstein said there was, of a sort. Are quarks made up of smaller particles? Perhaps we will never know. Nor will we ever know how it was all organised or why it's there at all.
  
 =====Additional Walk - Holiday Weekend - Monday 7th October.===== =====Additional Walk - Holiday Weekend - Monday 7th October.=====
199109.txt · Last modified: 2016/04/21 14:20 by kennettj
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