Discussion
What is an atmospheric window in the millimetre band?
Answer: C
Between the oxygen and water vapour lines lie ranges near thirty five, ninety four and a hundred and forty gigahertz where clear air attenuation is comparatively low, and imaging and radar systems are placed there. The windows are properties of the molecular spectrum rather than of time, regulation or geography. Choosing an operating frequency from the structure of the medium's absorption spectrum is the same reasoning that placed infrared astronomy at particular wavelengths.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development