| 1 |
[ adjective ] of or relating to or associated with the moon
Examples "lunar surface" "lunar module" Used in print (Cornell H. Mayer, "Radio Emission of the Moon...)This was followed by a comprehensive series of observations of the 1.25 - cm emission of the moon over three lunar cycles by Piddington and Minnett ( 1949 ) . Since the absorption of radio_waves in rocklike material varies with wave_length , it should be possible to sample the temperature variation at different depths beneath the surface and possibly detect changes in the structure or composition of the lunar surface material . Not all the observers have used the same procedures or made the same assumptions about the lunar brightness distribution when reducing the data , and this , together with differences in the methods of calibrating the antennae and receivers , must account_for much of the disagreement in the measured radio_brightness temperatures . In the observations at 4.3 mm ( Coates , 1959 a ) , the diameter of the antenna beam , 6 ' .7 , was small enough to allow resolution of some of the larger features of the lunar surface , and contour diagrams have been made of the lunar brightness distribution at three lunar phases . In the observations at 4.3 mm ( Coates , 1959 a ) , the diameter of the antenna beam , 6 ' .7 , was small enough to allow resolution of some of the larger features of the lunar surface , and contour diagrams have been made of the lunar brightness distribution at three lunar phases . Related terms |
| * |
|