Electromagnetic waves
Why this, why now
This unit explores reflection, refraction, and lenses using ray diagrams. It covers the electromagnetic spectrum, light as a wave, absorption, transmission, and practical uses. Emphasis is on risks, temperature balance, data presentation, and unit conversions.
Prior knowledge requirements
- Ardaydu waa inay yaqaanaan aasaaska maadada.
- Ardaydu waa inay awoodaan inay raacaan tilmaamo fudud.
Unit 4 / 6
Electromagnetic waves
This unit explores reflection, refraction, and lenses using ray diagrams. It covers the electromagnetic spectrum, light as a wave, absorption, transmission, and practical uses. Emphasis is on risks, temperature balance, data presentation, and unit conversions.
27 lessons- Emitting infrared and black body radiation
- Ionising electromagnetic radiation
- Refraction through a rectangular block (including wave front diagrams)
- Emitters of infrared & black body radiation
- Virtual images from converging and diverging lenses
- Scale diagrams for convex lenses (including magnification)
- Convex lenses
- Converging lenses
- Convex lenses (including magnification)
- Virtual images from convex and concave lenses (including magnification)
- Light and colour
- Virtual images from convex and concave lenses
- Absorbing infrared radiation practical
- Scale diagrams for convex lenses
- Scale diagrams for converging lenses
- Refraction through a rectangular block
- Dispersion of light and electromagnetic waves
- Non-ionising electromagnetic radiations
- Refraction through a semicircular block
- The spectrum of electromagnetic radiation
- Refraction through a semicircular block (including TIR)
- Dispersion of light and electromagnetic radiation
- The spectrum of electromagnetic waves
- Reflection of light
- Non-ionising electromagnetic radiation
- Reflection of light (including specular and diffuse)
- Emitting infrared radiation