Keywords: Philosophical Transactions 1850 Figure 3 Page 35.png en Figure 3 Page 35 from Philosophical Transactions 1850 de Bild 3 Seite 35 aus Philosophical Transactions 1850 Philosophical Transactions of the Royal Society 1850 Vol 141 Fig 3 page 35 Michael Faraday 1850 PD-old Michael Faraday |