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MV is a fantastic .. by brenno   (Show all posts)
Colin Murphy
2008-12-02 10:39:12
"Schiehallion" from Colin Murphy Expand pics
Schiehallion (Expand pics)
Contour lines, physics byproduct
Back in the distant year of 1981, a flatmate of mine in Edinburgh, suggested that we kill a summer’s Sunday by ‘climbing a mountain’. With nothing else to do, we set off for God-knows-where in his banger of a car and I duly trudged along in agonised silence behind him, ill-equipped and totally unfit as we headed up Schiehallion (1083m in Perth & Kinross) – my first ever hillwalking experience. By co-incidence I recently came across the name Schiehallion when reading Bill Bryson’s ‘A short history of everything’. In 1774, the mountain had been selected by a physicist Nevil Maskelyne as an ideal one to conduct an experiment to determine the universal gravitional constant – if you hang a plumb line near a mountain the gravitational force will pull the line at a tiny but measurable angle towards its mass. All you need to do is measure the mass of the mountain and bob’s your uncle, the gravitational constant! Maskelyne and a mathematician called Hutton spent months taking countless measurements of Schiehallion to determine its precise shape. But the jumble of numbers was so confusing they could make little use of them – until Hutton realised that his job would be made easier if he joined the points of equal height. When he did, he realised that he’d accidentally discovered a way of accurately mapping the landscape – contour lines. Within a few years the system was adopted as a standard among cartographers the world over and it has certainly stopped me from walking over a few cliffs over the years. Incidentally their original gravitational constant experiment was a success and was actually repeated by a group of scientists in 2005, with pretty much the same results!
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Track
Scarr ridge from Trooperstown Carpark
simon3 21 hours ago.
A different place to start from to reach Scarr with a lot of car-parking. Return uses Wicklow Way in part. walk, Len: 14.2km, Climb: 498m, Area: Dublin/Wicklow (Ireland) Scarr

  
Track
Near Ring Hill, Shannon (Ireland)
mlmoroneybb 4 days ago.
Caption walk, Len: 1.3km, Climb: 158m, Area: Ring Hill, Shannon (Ireland) Ring Hill

  
Summit Comment
Caora Bhán: Dunkerron ridge run
Dbosonnet 3 days ago.
Coomnacronia taken from the Dunkerron ridge. Track 3488 for details

Summit Comment
Topped Mountain: Short & simple
Colin Murphy 4 days ago.
A simple little Minion to climb (the name Topped 'Mountain' is a bit of a stretch). A gravel path & steps from a carpark will see you reach the top in about 15 minutes, and you won't even need you...

  
Track
Near Lough Curra Mtn, Galty Mountains (Ireland)
mlmoroneybb 4 days ago.
Sunday A walk started at Cush carpark taking in the soldier?s hole, Saunder?s Lodge, the grassey Knol, ice road. Lou walk, Len: 13.2km, Climb: 1000m, Area: Lough Curra Mtn, Galty Mountains (Irela

  
Summit Comment
Crockmulroney: Good summit for Carn-baggers
Colin Murphy 4 days ago.
A fine hill with a well defined summit and great views. Plenty of parking spots along the R254 directly to the south of the summit. From there it's a relatively simple 1km climb to the top.

Summit Comment
Slievenashaska: Wild mountain run
Dbosonnet 3 days ago.
Slievenashaska taken from the Dunkerron ridge. Track 3488 for details

  
Summit Comment
Oileán Mhuighinse: Galway Island
sandman 4 days ago.
For the walkers who may not wish to visit the summit area a photo of same.

  
Summit Comment
Oileán Mhuighinse: Galway Island
sandman 4 days ago.
The walk from the car parked at L7692629281 on the graveyard road to the high point is short but out from the public road it is entirely on private property . Access via the gate up to the small c...

Track
Into The Coum(eragh)'s
GSheehy 4 days ago.
The forecast was for heat, so I said I?d have an early start. Down to the base layer by the time I got to The Gap at ... walk, Len: 27.2km, Climb: 1226m, Area: Coumfea West Top, Comeragh Mountains (I

  
Summit Comment
Eanach Mheáin: Galway Island
sandman 4 days ago.
Connemara Island Golf Course is a nine hole course located on this island and just inside its entrance at L9080830893 is the 11th/17th hole where the natural high point is adjacent to the ladies t...

  
Summit Comment
Lettercallow: Coastal Hill
sandman 4 days ago.
By parking at L8760028966 you can walk on to open hillside with no access issues . A gentle accent to the summit area which unlike its nearest neighbour has no seating arrangements for the visitor...


RECENT CONTRIBUTIONS 1 2 3 .. 22 Next page >>