Elements Of Remote Sensing
Which one of the following statement is correct?

All of these
Radiant energy expressed in Joules, is the energy associated with electromagnetic radiation
The radiant energy which falls upon a surface is termed as irradiance
The rate of transfer of radiant energy is called flux and is expressed in watts

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Elements Of Remote Sensing
Earth observations from a satellite platform provide:

All of these
Constant solar zenith angles and similar illumination conditions
Repetitive observations of the same area with intervals of a few minutes to a few weeks
Synoptic view of a large area

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