Waves: Electromagnetic waves. Flashcards
1
Q
Are electromagentic waves traverse or longitudnal?
A
- Transverse.
- ## Transfer energy from the source of the waves to an absorber.
2
Q
What is the electomagnetic spectrum?
A
- Begginning of Spectrum: Lower frequency and longer wave length.
- End of the spectrum: Higher Frequency and shorter wave length.
- Radio Waves, Microwaves, Infrared Radiation, Visible light, ultra violet radiation, x-rays, Gamma rays.
- Visible light= only part of electromagentic spectrum that can be detected by the human eye.
- Waves do not need a medium to travel in and can travel through a vaccum.
3
Q
What speed do electromagnetic waves travel in?
A
- All electromagnetic waves travel in the same speed in a vaccum.
- Speed is: 3 x 10^8 m/s.
- Different materials absorb, transmit, or reflect electromagentic waves.
- What happens to the waves depends on the wave length.