squared-components-still-account-for-the-field - Electromagnetic Waves and Polarization Step by Step

The split is checked as a closed sum of field components. 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 split is a ledger, not a loose component sketch

The same axis split closes a squared-component ledger from the checked projection source.

\left(6\ \text{V}/\text{m}\right)^{2} + \left(8\ \text{V}/\text{m}\right)^{2} = \left(10\ \text{V}/\text{m}\right)^{2}