The effect of atmospheric scattering upon the appearance of a dark object against a sky background [0.03%]
大气散射对暗物体在天空背景下外观的影响
G A FRY,C S BRIDGMAN,V J ELLERBROCK
G A FRY
K S GIBSON,M M BALCOM
K S GIBSON
K H BUTLER
K H BUTLER
Improved infra-red polarizer [0.03%]
改进的红外偏振片
A H PFUND
A H PFUND