London
Found in 7 Collections and/or Records:
Letter from William Lester to Dr Thomas Young, 1821-01-09
Outlining his planned solar experiments for finding longitude. As his experiments involved 'igniting' points on a globe of the earth using a lens, the letter has been marked 'burning a globe' by the Board.
Letter from William Lester to Dr Thomas Young, 1821-01-12
Originally enclosing further information on his proposals for finding longitude.
Letter from William Lester to Dr Thomas Young, 1821-01-20
In which Lester provides further information on his proposal to find longitude by means of the solar rays.
Letter from William Lester to Dr Thomas Young, 1821-05-07
Suggesting that his Solometer could be used in conjunction with a pyrometer to ascertain longitude.
Letter from William Lester to Dr Thomas Young, 1821-05-24
Enclosing an explanation and drawings of his Solometer; see [RGO 14/40: 356-357].
Letter from William Lester to Dr Thomas Young, 1821-06-03
Enclosing the letter now at [RGO 14/40: 359] for consideration by the Board of Longitude.
Letters from William Lester to the Board of Longitude, 1821-01-03
Letter outlining his invention for finding longitude based on measurements of solar light; preceded by a cover letter addressed to Thomas Young.