Light is a form of electromagnetic radiation that travels in waves made up of electric and magnetic fields. The electromagnetic spectrum includes both visible light and invisible forms of energy across a range of wavelengths. The wavelength of light determines whether it is visible to the human eye or not, with different wavelengths appearing to us as different colors. Objects are visible because they reflect light, with smooth surfaces reflecting light specularly and rough surfaces reflecting it diffusely.

1. Light and the Electromagnetic Spectrum

2. Light as a Wavelight is a visible form of energymost of the energy that surrounds us is invisiblethis energy travels in waves made of electric and magnetic fieldscalled “Electromagnetic Radiation”

3. Light as a WaveElectromagnetic Spectrum = the entire range of visible and invisible energy waves

4. Properties of Waveswavelengthamplitudeamplitudewavelength

5. Wavelengths of the Electro-Magnetic Spectrum

6. Wavelength and Colour

7. Seeing Colour

8. Pinhole Camera

9. How Light is Transmitted

10. Transparent:allows light to pass throughTranslucent:allows some light to pass throughOpaque:allows no light to pass through

11. Light ReflectionThe reason we see objects is because they reflect lightSmooth Surface

12. Rough Surface