Acoustics+(week+5)

Acoustics: Speed of sound travels 330 metres every second. Radio waves travel at the speed of light (300.000 km per second) Formula: Frequency = Cycles/Time Waves: carry energy from one place to another. Sound, light and radio signals all travel in the form of waves. There are two types: Transverse and longitudinal.
 * ** Speed: ** distance travelled in unit time (m/s)
 * ** Frequency: ** Number of complete waves passes a point per second (Hz=hertz)
 * ** Wavelength: ** Distance between matching points on the wave (m).
 * ** Longitudinal ** : vibration parallel to direction of travel
 * ** Transverse ** : vibration at right angle to direction of travel