Definition Bank Flashcards
1
Q
Frequency definition
A
The number of waves passing a point per unit time
2
Q
Speed (waves) definition
A
Distance travelled by a wave per unit time
3
Q
What is a phase
A
4
Q
Explain oscilloscopes
A
- Cathode ray oscilloscope (CRO) measures voltage displays waves from a signal generator as a function of voltage over time
- Displayed wave is called a trace
the screen is spilt into squares called divisions
-The vertical axis is in volts.
The volts per division shown on the x axis is controlled by the gain dial
- the timebase is the horizontal . The seconds per division is controlled by the timebase dial
- alter the time base to make it easy to read measurements
5
Q
What is intensity
A
The measure of how much energy a wave is carrying
6
Q
Intensity is proportional to…
A
Energy and the energy of the wave depend on the Amplitude
Intensity proportional to amplitude squared
7
Q
What is reflection
A
When a wave bounces back after hitting a boundary
Angie of incidence = angle of reflection
