Electromagnetic waves

Electromagnetic wave velocity
v = c / saknis(ε*μ)
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Speed ​​of light in vacuum
c = saknis(ε0*μ0)
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Length of electromagnetic wave
λ = c * T
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Length of electromagnetic wave
λ = c / ν
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Bulk (spatial, volume) density of electromagnetic wave
ω = E*B / (v*ε0*μ0)
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Length of electromagnetic wave
λ = v / ν
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Radiolocation: distance
s = ct / 2
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