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JOHN TYNDALL - AUTOGRAPH - HFSID 112393

JOHN TYNDALL. Signature: "John Tyndall", 3½x2 card. Irish physicist John Tyndall (1820-1893) answered the age-old question of youngsters by showing that the sky is blue because of fine particles in the atmosphere. He studied the diffusion of light by large molecules and dust, which became known as the Tyndall effect.

Sale Price $144.00

Reg. $160.00

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JOHN TYNDALL. Signature: "John Tyndall", 3½x2 card. Irish physicist John Tyndall (1820-1893) answered the age-old question of youngsters by showing that the sky is blue because of fine particles in the atmosphere. He studied the diffusion of light by large molecules and dust, which became known as the Tyndall effect. Heavily foxed and stained with mounting remnant on upper left and lower right corners.

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