It is also reduced by atmospheric absorption and scattering.

Sound pressure level also decreases due to atmospheric absorption, which is strongly dependent upon frequency, lower frequencies traveling farthest.

This dual-view system enables a particularly accurate estimate to be made of the signal degradation due to atmospheric absorption and scattering.

Precise measurements of atmospheric absorption were not made until 1888 and 1904.

Therefore, ellipsometry is less affected by intensity instabilities of the light source or atmospheric absorption.

First, the Brukkaros observatory was at a relatively low elevation, with the result that atmospheric absorption was both substantial and variable.

By taking readings at different times of day, he tried to correct for effects due to atmospheric absorption.

If this atmospheric absorption did not occur, life probably could not exist on earth.

By using a telescope which flies at over 42,000 metres high, it is possible to reduce the atmospheric absorption of microwaves to a minimum.

It is almost always contaminated with varying amounts of carbonate from atmospheric absorption.