Photonephograph
Photonephograph (fō`to*nef"o*grȧf) , noun
[Photo- + Greek ne`fos a cloud + -graph.]
(Meteorology) A nephoscope registering by photography, commonly consisting of a pair of cameras used simultaneously.
Photonephograph (fō`to*nef"o*grȧf) , noun
[Photo- + Greek ne`fos a cloud + -graph.]