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Longest stretch of uk level line

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My understanding of this thread is finding the longest section of level track - not flat

 

It's in the title

 

So all those straight bits at a constant level following some kind of partial grand circle around the earth all count. So do bits that curve, as long as they stay the same height above mean sea level 

 

Otherwise, it's going to get messy trying to work out which bits are flat but on a gradient, or are level but not flat because of infinitesimally small deviations

 

Richard

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If we are talking 2D then something level is also flat but that a flat line does not have to be level.  A line with no gradient would follow the surface of the earth at the same offset from MSL at Newlyn; it would not be 'flat'

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5 hours ago, 62613 said:

 

Isn't the definition of a straight line "The tangent of a circle of infinite radius?"

Hi 62613,

 

In Masonry the square points to the Earth as it is measurable and the compass, set at 60*, points to the Heavens as they are immeasurable. The G between the square and compass encodes Pi bye way of the English Gematria value of 7 for G and 22 for the word Seven.

 

Gibbo.

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On 12/07/2019 at 19:50, eastglosmog said:

And where any of them have been affected by coal mine subsidence.  Many formerly level lines and canals in the coalfields now go up and down in switchback fashion.

Hi eastglosmog,

 

In the Wigan Area there are various Flashes which have appeared as a result of mining subsidence where the Leigh branch of the Leeds Liverpool turns into a lake with the towpath and all of the lock gear quite submerged.

 

Gibbo.

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Brean (sic) to Bridgwater 10.5m has already been mentioned, and I would imagine another 10 miles or so north from Brean to Yatton would also be pretty close to level (with one curve, Bleadon and Uphill to Worle Jn), as the route crosses the Somerset Levels.

 

cheers. 

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9 hours ago, Gibbo675 said:

Hi eastglosmog,

 

In the Wigan Area there are various Flashes which have appeared as a result of mining subsidence where the Leigh branch of the Leeds Liverpool turns into a lake with the towpath and all of the lock gear quite submerged.

 

Gibbo.

Hi Gibbo

At one time, British Waterways Board used to have teams of bricklayers going up and down raising the banks of some canals in advance of the National Coal Boards antics.

  • Informative/Useful 2

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33 minutes ago, eastglosmog said:

Hi Gibbo

At one time, British Waterways Board used to have teams of bricklayers going up and down raising the banks of some canals in advance of the National Coal Boards antics.

 

If you travel the more obscure parts of the BCN, watching the brickwork of the towpath edging sloping down into the water is very obvious. The Daw End canal has a lot of this, together with bridges designed to be jacked up to insert a fresh course of bricks or two

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