λ=c/v
v=c/λ
v=3*10^8/300=0,01*10^8 (Гц)
T=1/v
T=1/0,01*10^8=100*10^8 (c)
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λ=c/v
v=c/λ
v=3*10^8/300=0,01*10^8 (Гц)
T=1/v
T=1/0,01*10^8=100*10^8 (c)