Raj’s microwave oven is covered with a mesh, which lets visible light through it but completely blocks microwave radiation with no leaks.
He now places a mobile phone in the oven with the oven switched off.
Will the phone—which uses radio frequencies—be able to make and receive calls?
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If cellphone reviser was a human eye and radio-waves were a visible light and microwave was a wooden box then a human inside a closed wooden box can not see the outside visible light , yes, the microwave will block radio-waves to go throw it`s walls .