The Big Canopy Campout

I’m going to be sleeping up the nearest of these lovely holm oaks tomorrow night.

Right here.

It’s part of the Big Canopy Campout in aid of critically threatened rainforest through the World Land Trust. You can donate here! Please!

The tree is an absolute cracker, with a nice spreading canopy and right on the waterfront of the River Exe where the canal meets and the wildfowl nest.

Huge thanks to Clive, the landlord of the Turf Hotel, in whose garden the tree lives.

On Using an 'O'-ring Part II

After a useful piece of advice on the RTCUK group that said you should clip to an 'O'-ring on your bridge rather than directly onto the bridge, I started to do exactly that. The rationale was that a carabiner will wear in the same place and abrade the bridge quicker than a ring that will wear uniformly all round it. Fair enough.

Well yesterday I was putting up a high hammock and had set up a Y-rig with two doubled ropes off the bridge. One was on my ring, but the other was clipped straight to the bridge. Because each leg was attached to anchors quite far apart, the tie-in points migrated to the ends of the bridge - but the directly-clipped one went beyond the bridge-end fittings.

This is not a good thing. Lesson learned. I'm buying a second 'O'-ring.

Nadal

Rafael Nadal looks like Tom Cruise with his face smushed against a window.

Think Twice

There are a number of great maths channels on YouTube, such as Numberphile and Mathologer - but the most beautiful and elegant is Think Twice, where smart and smooth animation visualises otherwise complex formulae or theorems. For example, here's the derivation and properties of the Dragon Curve.

(Mr Puzzle has a nice review of some laser-cut puzzles including a Dragon Curve one here.)