Saturday, 30 April 2022

Copt Howe Cup and Ring markings: circles and ellipses

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 This boulder in Langdale has rock art on it from perhaps 5000 years ago called "cup and ring" markings. On inspection, the circle...
Thursday, 28 April 2022

Testing my hypothesis about the protactinium generator

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 I was asked about why the protactinium produced by the decay of uranyl nitrate ends up in the organic layer. Protactinium is not soluble in...
Wednesday, 27 April 2022

Parabolic reflector? Ring Ouzel song perch

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  I found a Ring Ouzel singing. It sounded close and clear but was actually most of the way up this photograph. It was using a tier of crags...
Thursday, 21 April 2022

Milli moles in the tablets

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  A mole is an old idea for the quantity of a substance that dates back before we could detect individual atoms. Then the idea was that if y...
Monday, 18 April 2022

An energy explanation for why waves slow down

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  It occurred to me that as a wave approaches the coast, it starts to get taller. I think that this is because the water is shallower so the...
Saturday, 16 April 2022

Tree rings at Campfield Marsh

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 This bog oak is at Campfield Marsh RSPB. The tree rings are much closer together than yesterday's post. It has occurred to me since tha...
Friday, 15 April 2022

Counting tree rings on the beach

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This large, partly-burnt stump on the beach at the Merthyr Mawr end posed a challenge. The tree rings were very obvious but very far apart. ...