From:
John Tyndall
To:
Sir John Herschel
Date:
3 December [1868]
Source of text:
RS:HS 17.412 (C: RI 555)
Summary:
Continues experiments with carbonic acid and electric light [see JT's 1868-11-30], suggesting possible cause of blue cloud color and eventual whitening of light.
Contributor:
John Herschel Project