Text Online
From:
Michael Faraday
To:
John Welsh
Date:
20 June 1854
Source of text:
PRO BJ1 / 9
Summary:
No summary available.
Contributor:
Faraday Project
No summary available.
Describes R.S.L.'s compound magnet. Recommends cleaning and remagnetizing. Awaits JH's instructions.
Reliability of barometer and thermometer measurements from balloons. Compares results of several European observers. Suggests new expedition to Teneriffe [Canary Islands].
Cannot answer JH's question about electricity in heavy showers. Observations were discontinued years ago. Refers to Francis Ronalds's past experiments. Cites 1849 B.A.A.S. Rep. for map of storm observations. Notes changes in polarity of electricity during storms.