TY  - JOUR
T1  - On a New Photometer, with Its Application to Determine the Relative Intensities of Artificial Light, &c
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 115
SP  - 141
EP  - 146
PY  - 1825/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1825.0008
M3  - doi:10.1098/rstl.1825.0008
AU  - Ritchie, W.
ER  -