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  • The maximum frequency for reflection of sky waves from a certain layer of the ionosphere is found to be f_max 9 N_max1/ 2 where N_max is the maximum electron density at that layer of the ionosphere

The maximum frequency for reflection of sky waves from a certain layer of the ionosphere is found to be fmax= 9(Nmax)1/2, where Nmax is the maximum electron density at that layer of the ionosphere.
On a certain day it is observed that signals of frequencies higher than 5 MHz are not received by reflection from the F1 layer of the ionosphere while signals of frequencies higher than 8 MHz are not received by reflection from the F2 layer of the ionosphere. Estimate the maximum electron densities of the F1 and F2 layers on that day.

Answers (1)

The values given in the question are

F_{1}\: max = 5 MHz\\F_{2} \: max = 8 MHz

The formula used is Maximum frequency => f_{max }= 9(Nmax)^{1/2}

So, the Nmax | F_{1 }= 3.086 \times10^{11} m^{3}

Again, after value substitution,

N_{max} | F_{2} = 7.9 \times 10^{^{11}}/m^{3 }

Posted by

infoexpert21

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