Microwaves are electromagnetic waves with waveleghts ranging from as long as one meter down to as short as one millimeter, or equivalently, with frequencies between 300MHz (0.3 GHz) and 300 GHz. This is an extremely broad definition including both UHF and EHF (milileter Waves ), and various sources use different boundaries. In all cases, microwave includes the entirety band (3 to 30GHz, or 10 to 1cm) at minimum, with RF Engineering often putting the lower boundary at 1GHz (30cm), and the upper around 100GHz (3mm).
USES OF MICROWAVE
1.Communication
WiFI Bluetooth Mobile Phone
2.Remote Sensing
Ussually is uses by a radar for control Air traffic or for the Millitary Navigator
3. Power
ussually that we always uses for heated the meals that is microwave oven
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