Electrical Engineering › Section Y · Time-varying fields, Maxwell's equations, and plane waves › Topic Y.1
What electromagnetics is, the spectrum, and wave fundamentals
Circuit theory treats every part as a lumped symbol and ignores its shape. Electromagnetics puts the shape, the materials and the travelling fields back in, and that matters more and more as frequencies rise and wavelengths shrink.
In this topic
- Beyond the lumped element
- When size starts to matter
- Where fields are the whole story
- The electromagnetic spectrum
- Naming the radio bands
- Worked example: wavelengths across the spectrum
- What a wave is
- Sinusoidal waves
- Worked example: reading a wave
- Where classical theory stops
- Common mistakes to avoid
- Key takeaways
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