Most Central Point

[Mick F]

Cycling .............

I've been to Meriden ......... supposedly the most central point of England.
https://en.wikipedia.org/wiki/Centre_po ... ed_Kingdom

I've cycled to the most northerly, the most southerly, the most westerly, and the most easterly points of Cornwall.
Where is the most central point of Cornwall and how could it be defined?

[rotavator]

You need to find the centroid but will have to do the maths or carefully cut out an outline of the county and see where it balances on a pin head, good luck!

https://en.wikipedia.org/wiki/Centroid#Of_a_bounded_region

[rjb]

You could choose one from several locations such as Brown Willy, Dozemary pool or Altarnun. Lanivet is supposedly the geographic centre but no idea how that was arrived at. Did you visit the cross in the graveyard when you compiled your tour of parish churches. You could plan a ride visiting the highest and lowest points in Cornwall, not including mine shafts. You could possibly manage Delabole quarry once the deepest man made pit and Brown willy in one ride.
https://cornishbirdblog.com/2016/06/28/ ... ious-tail/

[richardfm]

Draw a line from the most northerly point to the most southerly point and one from the most westerly to the most easterly point and the call the point they cross the centre.

This assumes they will cross and the point will be on land.

[Mick F]

Get a map and paste it on cardboard, then cut out the coastline and the border, then hang it on a single pin and draw a vertical line downwards.
Move the pin and hang it again and draw another vertical line.
Repeat a few times and find were the all lines intersect, and that is the centre of gravity.
Did that at school regarding geometry etc, but I wondered if there was a list of central points by county.

Perhaps not ............. so it's the pin and the pencil trick eh?

Lanivet?
Been there lots of times.
Old A30 between Goss Moor and Bodmin.
Welcome Stranger fish and chips!
https://welcomestrangercornwall.co.uk

[drossall]

You need to find the centroid but will have to do the maths or carefully cut out an outline of the county and see where it balances on a pin head, good luck!

Hmm. Bodmin Moor, the high spot, is somewhat to the north, and the Tamar flows south, but from a source near the north. Both of these things suggest rather more hills in the north of the county, which would therefore be heavier, requiring an adjustment to the calculations

Mick F would know better than me though.

[Mick F]

Cornwall is a complicated shape of course let alone the border with England.
The coasts are very ................. can't remember the word .................. fractals?
What about tides?

The county gets narrower the further you go west, but there are wider dog-legs to the west and to the south.

I think the central point is further west than Bodmin. Maybe Indian Queens. (cycled there too)

[tim-b]

Hi

Cycling .............

I've been to Meriden ......... supposedly the most central point of England.
https://en.wikipedia.org/wiki/Centre_po ... ed_Kingdom

Meriden has been the traditional centre for centuries, the geographical centre is in the next county at Fenny Drayton
Regards
tim-b

[Paulatic]

The Cranes decided where the Centre of the Earth was and cycled there.
I wonder where they would have ended up if they had had Google?
Google says the centre of Cornwall is Lanivet https://www.cornwalllive.com/news/cornw ... re-4614038

[Mick F]

Lanivet.
Just west of Bodmin.

Last there on my bike doing the parish churches. Oct 2018. Just short of 50miles.
Parked the car at Lostwithiel.

[Jdsk]

Where is the most central point of Cornwall and how could it be defined?

It could be defined as the centroid, as above, or as the point furthest from the sea, or in other ways. It's your choice.

http://www.mathematische-basteleien.de/geocentre.htm

Jonathan

[CliveyT]

Get a map and paste it on cardboard, then cut out the coastline and the border, then hang it on a single pin and draw a vertical line downwards.
Move the pin and hang it again and draw another vertical line.
Repeat a few times and find were the all lines intersect, and that is the centre of gravity.

Except there's a lot of the North coast that's now hollow whereas ic clay country they just dug big holes and then piled it back up again. How does granite compare to slate?
Anyway Dozmary is bottomless so that must have infinite mass surely?

[peetee]

Except there's a lot of the North coast that's now hollow whereas ic clay country they just dug big holes and then piled it back up again.

Just up the road from me is the deepest vertical shaft in the county; 3000ft. I recounted this fact to my son as we drove down the A30 one day. I asked him to imagine the road was the vertical shaft
“...And over we go.. falling...falling........still falling” [checks tachograph on dashboard]. “Still falling.... falling...[check again ] Falling......THUMP!
I try not to think about what isn’t down there holding the house up. This vid gives you a pretty vivid idea of Kernow Subterrainea.
https://youtu.be/oKarlMJDwmA

[tim-b]

Hi
This is how OS do it, OS blog link
It's interesting (to me at least) that you would first have to consider what "Cornwall" consists of, for example the Isles of Scilly are part of the ceremonial County of Cornwall.
What tidal time-frame are you considering as the landmass shrinks and grows?
Regards
tim-b

[[XAP]Bob]

Cornwall is a complicated shape of course let alone the border with England.
The coasts are very ................. can't remember the word .................. fractals?
What about tides?

The county gets narrower the further you go west, but there are wider dog-legs to the west and to the south.

I think the central point is further west than Bodmin. Maybe Indian Queens. (cycled there too)

Gets higher and lower twice a day as well...

[youtube]lCA0II1sVZA[/youtube]

Most countries ignore terrain:

[youtube]PtKhbbcc1Rc[/youtube]