From:
Thomas Young
To:
Sir John Herschel
Date:
[1820 or 1825]-2-18
Source of text:
RS:HS 18.351
Summary:
Gives diagram and explanation of TY's reduced parallax. JH's formula is elaborate but complicated. TY's formula is less exact but easier for public to use. Welcomes criticism.
Contributor:
John Herschel Project