Electromagnetic Waves
Learning Objectives
- Students will be able to describe the properties of electromagnetic waves
- Students will be able to classify the electromagnetic spectrum by wavelength and frequency
- Students will be able to apply the wave equation c = λf to EM radiation
Core Concepts
- Electromagnetic spectrum
- Wave properties
- Speed of light
Formulas
$$c = \lambda f$$
Wave equation for electromagnetic waves in vacuum
$$E = hf$$
Energy of a photon in terms of frequency
Units
| Hertz | Hz |
| Meter | m |
Interesting Fact
Maxwell predicted the existence of electromagnetic waves before they were experimentally detected
Key Scientist
Heinrich Hertz
First experimentally demonstrated the existence of electromagnetic waves
Philosophy
Electromagnetic waves demonstrate the power of mathematical models to describe physical phenomena, which is a key aspect of the scientific method. However, the philosophical implications of this are complex and should be discussed with nuance.
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