Description | Data relating to the variation of the magnetic needle at anchor in Revill [Reval, now Talinn, Estonia] in the Baltics on 1 June 1720.
Subject: Magnetism
Published in Philosophical Transactions as 'Observations upon the variation of the needle made in the Baltick, Anno 1720'.
Communicated by Captain Soame. Read to the Royal Society on 23 February 1720. |