Photos, videos and docs of Jim Easterbrook, with the keywords: "sundial"

Horniman Museum & Gardens

nobody@ipernity.com (Jim Easterbrook) — Thu, 28 Apr 2022 11:27:04 +0000

Jim Easterbrook has posted:

Steel sundial.

Horniman Museum & Gardens

nobody@ipernity.com (Jim Easterbrook) — Thu, 28 Apr 2022 11:25:46 +0000

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Cast concrete sundial.

Heidelberg, Germany.

nobody@ipernity.com (Jim Easterbrook) — Thu, 28 Apr 2022 10:50:21 +0000

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Sundial on unidentified Schloss building.

Rothenburg ob der Tauber, Germany.

nobody@ipernity.com (Jim Easterbrook) — Thu, 28 Apr 2022 10:47:52 +0000

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Clock and sundial on the Ratstrinkstube inn.

Rothenburg ob der Tauber, Germany.

nobody@ipernity.com (Jim Easterbrook) — Thu, 28 Apr 2022 10:46:01 +0000

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Sundials on Altes Gymnasium stair tower.

Nürnberg (Nuremberg), Germany.

nobody@ipernity.com (Jim Easterbrook) — Thu, 28 Apr 2022 10:43:40 +0000

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Sundial on building on Sebalder Platz.

Hohnstein, Sächsische Schweiz, Germany.

nobody@ipernity.com (Jim Easterbrook) — Thu, 28 Apr 2022 10:42:56 +0000

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Sundial on schloß wall. The wall faces east, so the sundial only works in the morning.

Bergheim, France.

nobody@ipernity.com (Jim Easterbrook) — Thu, 28 Apr 2022 10:34:19 +0000

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L'église. Another interesting sundial. // Bergheim, France.

Colmar, France.

nobody@ipernity.com (Jim Easterbrook) — Thu, 28 Apr 2022 10:30:51 +0000

Jim Easterbrook has posted:

Collégiale St-Martin. Interesting sun dial / calendar?

I think the character at bottom left is a stylised X, so it says 'XII' i.e. 12 noon. When the point of light coming through the disc at the end of the gnomon hits the yellow figure of eight, it's 12 noon local mean time. The month markings enable you to disambiguate the earlier or later crossing of the yellow line the other side of the black centre line. When the sun's high in the sky (July) the shadow is lower than when it's low in the sky (January).

I've certainly never seen anything like this before, but have thought about the idea of working the 'equation of time' into a sundial by using the sun's altitude as well as its azimuth.

Slide 0140

nobody@ipernity.com (Jim Easterbrook) — Thu, 28 Apr 2022 10:24:26 +0000

Jim Easterbrook has posted:

Gate of Honour, Caius college, Cambridge.