Referee report by James Challis on 'Astronomical Experiment on the Peak of Teneriffe, Carried out under the Sanction of the Lords Commissioners of the Admiralty' by C. Piazzi Smyth

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                                the brightness of the Sun’s disk 
at the central parts compared with 
that near its border, the observations 
of the Zodiacal Light & particularly those 
relating to its visibility East and 
West at the same season of the year,
the force of the Sun’s radiation, the 
measure of the heat of the Moon’s 
radiation, the varying appearance 
of the lines of the spectrum 
with the angle of elevation, and 
the intensity of the Earth’s magnetism 
at different altitudes. On all these 
points new or confirmatory in-
formation has been obtained. Be-
sides which, the  observations of 
variations of temperature at different 
elevations, as affecting the determi-
nation of heights by the barometer,
and the meteorological observations 
generally are of great interest.
The most important astronomical 
result of the expedition is the 
demonstration of the practicability 
of using telescopes with advantage 
                            
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Manuscript details

Author
Charles Piazzi Smyth
Reference
RR/3/252
Series
RR
Date
1856
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Referee report by James Challis on 'Astronomical Experiment on the Peak of Teneriffe, Carried out under the Sanction of the Lords Commissioners of the Admiralty' by C. Piazzi Smyth, 1856. From The Royal Society, RR/3/252

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