TY  - JOUR
AB  - The Eltro transmissometers for visibility measurement comparison work on the principle of a special photometric double beam. The light beam emitted from the light source is chopped and then divided into two beams by means of a beam splitter; one of them passes through the free atmosphere and then is reflected by a triple mirror. The amplitude of the other one — used as reference beam — is modulated a second time.
VL  - 44
IS  - 4
SN  - 0002-2667
DO  - 10.1108/eb034894
UR  - https://doi.org/10.1108/eb034894
PY  - 1972
Y1  - 1972/01/01
TI  - Airport Installation: On exhibition at the Hanover air show
T2  - Aircraft Engineering and Aerospace Technology
PB  - MCB UP Ltd
SP  - 33
EP  - 34
Y2  - 2024/04/24
ER  -