Electromagnetic spectrum
- Created by: cookieshypiggy
- Created on: 01-05-13 06:58
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- Electromagentic spectrum
- Properties
- Are transverse waves
- Travel in vacuum at 3.0X10^8m/s
- Travel same speed in vacuum but slower in mediums
- no medium required
- obey laws of reflection & refraction
- transfer energy from 1 point to another
- obey wave equation
- v=f(lambda)
- T=1/f
- Carries no charge
- Frequencies are not dependent on its medium
- Uses of components
- Gamma Rays
- Cancer treatment
- X rays
- radiotherapy
- radiography
- crack detection (eg. buildings)
- Ultraviolet rays (UV rays)
- sunbeds
- sterilization of medical equipment
- Visible light
- optical fibres in teleco- mmunication and medical instrument
- Infra-red
- Thermography
- night-vision equipment
- remote controllers
- intruder alarms
- Microwaves
- in cooking (microwave ovens)
- radar communication
- Radio waves
- Radio communication
- Television communication
- Gamma Rays
- Effects on cells and tissues
- overexposure
- Causes sun burn / skin cancer
- mostly uv
- Ionizing radiation
- Gamma rays & X-rays
- Causes ionization of atoms or molecules
- Damaged cells and tissues
- Cancer
- Premature aging
- Shortened lifespan
- overexposure
- Sequence (top: greatest frequency and energy)
- radiowaves
- 10^2
- microwaves
- 10^-2
- infrared
- 10^-4
- visible light
- 10^-7X(4-7)
- dependent on colour
- 10^-7X(4-7)
- ultra-violet
- 10^-8
- x-rays
- 10^-10
- gamma rays
- 10^-12
- length
- radiowaves
- Properties
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