Näytetään tekstit, joissa on tunniste Mechanics' Magazine. Näytä kaikki tekstit
Näytetään tekstit, joissa on tunniste Mechanics' Magazine. Näytä kaikki tekstit

7.3.19

The Colors Most Readily Distinguished.

Manufacturer and Builder 1, 1870 Experiments made to ascertain what colors are most quickly and easily perceived by the eye, seem to show ...

25.5.09

Jewellers' Gold.

Scientific American 3, 17.1.1863 The London Mechanics' Magazine contains the following interesting remarks on this subject:- From very ...

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