1. Equation
1.1. Frequency=Wavelength x Speed
2. Effects on humans
2.1. Waves with higher frequencies tend to be more harmful
2.2. Causes Ionising radiation
2.2.1. What
2.2.1.1. Causes electrons to escape the atoms, charging them and making it unstable
2.2.2. Effects
2.2.2.1. Overexposure causes premature aging, sterility, cancer and even death
2.2.2.2. Causes mutations which can pass through generations
3. Properties
3.1. Travels at 3.0x10^8 m/s in vacuum
3.1.1. Task
3.1.2. Prerequisites
3.2. Transverse waves
3.2.1. Task
3.2.2. Prerequisites
3.3. Can be reflected and refracted
3.3.1. Task
3.3.2. Prerequisites
3.4. Transfers energy without the need of a medium
3.5. Different waves of different frequencies
3.5.1. Example
3.5.1.1. Radio waves
3.5.1.2. Microwaves
3.5.1.3. X-rays
4. Components of the electromagnetic spectrum
4.1. Radio waves
4.1.1. Lowest frequencies
4.1.2. Used for transmission of signals and data
4.1.3. Signals received through antennas
4.2. Microwaves
4.2.1. Easy to control and direct
4.2.2. Microwaves in oven heats up food
4.3. Infrared
4.3.1. Produced by hot objects
4.4. Visible light
4.4.1. Produced by luminous objects
4.4.2. Crucial for human sight
4.4.3. Used in data transfer in telecommunications and electronic devices like television
4.5. Ultraviolet rays
4.5.1. Causes sunburn through stimulating the skin pigments
4.5.2. Absorbed by some chemicals to cause glowing
4.6. X-rays
4.6.1. High Frequencies
4.6.2. Able to penetrate materials
4.6.3. Used in the medical field to see inside the body
4.7. Gamma rays
4.7.1. Has the highest frequencies
4.7.2. Produced from nuclear explosions and atomic bombs