PaulCarneyArts : Cyanometer, a device for measuring the blueness of • TwiCopy

Paul Carney

@PaulCarneyArts

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Art & Design Education Consultant, Artist, Author of Drawing for Science Invention & Discovery and Drawing to Learn anything

calendar_today04-12-2008 20:04:54

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Paul Carney

@PaulCarneyArts

2 years ago

Cyanometer, a device for measuring the blueness of the sky by Horace-Benedict de Saussure 1790

Cyanometer, a device for measuring the blueness of the sky by Horace-Benedict de Saussure 1790

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