[tex]An \: electromagnetic \: wave can \: travel \: through \: anything \:[/tex]
[tex] - be \: it \: air, \: a \: solid \: material \: or \: vacuum. [/tex]
[tex] It \: does \: not \: need \: a \: medium \: to \: propagate \: [/tex]
[tex]or \: travel \: from \: one \: place \: to \: another[/tex]
An electromagnetic wave can travel through anything - be it air, a solid material or vacuum. It does not need a medium to propagate or travel from one place to another
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