One amendment done – Mobile communication should be using microwaves.
‘Li-fi 100 times faster than wi-fi’
A common misconception by students is to associate sound waves produced by a sound system with radio waves. Signal is transmitted in the air via radio waves from the radio stations in the form of transverse waves. When sound which you hear that is produced from the speaker is sound waves which are longitudinal waves.
Ultraviolet is part of the electromagnetic spectrum. One of its application is artificial sun tanning in sunbeds.
But beware of the harmful effect of skin cancer. Read the articles below.
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