EM Radiation and Energy

All sorts of objects give out EM radiation

EM Radiation is emitted from a source.....

• Many things emit (give out) electromagnetic radiation
• Things that emit EM radiation are called sources
• For example, the sun emits heat, light and ultraviolet radiation
• Heat radiation is infrared radiation
• The frequency of heat (thermal) radiation given out by an object increases with temperatures
• All types of EM radiation travel at the same speed in a vacuum (like space) - 300000km/s

.....And transmitted, reflected or absorbed somewhere else

• When radiation is emitted from a source, it spreads out until it hits something
• Three things can then happen
  • The radiation might be transmitted (keeps going) - like light passing…