Telecom & Networking

Intermediate

Propagation Delay

Time for a signal to travel a distance at propagation speed.

Formula

t = \frac{d}{v}

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Variables

tDelay (s)

dDistance (m)

vPropagation speed (m/s)

Example

d=3000 km, v=2×10⁸: t = 15 ms

Did You Know?

Even at light speed, a signal takes about 120 ms to cross the globe — a floor no upgrade can remove.

telecom latency delay

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