the-training-speed-is-an-idealization - Electromagnetic Waves and Polarization Step by Step

This boundary notes that the speed value is a finite training constant. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

The speed is a stated idealization

In this book the speed value 6\ \text{m}/\text{s} is the training rule, not a physical constant. The checks reject any claim that uses a different speed.

c_{\text{training}} = 6\ \text{m}/\text{s}