Oscilloscope Flashcards
What do we see on an oscilloscope?
The particles that pass on the vibrations and the wave of compressions and rarefactions converted into an image that looks like a transverse wave. This is how the pressure varies.
When the line is at the top of its going up crest what is happening?
When the line is at the top of its going down crest what is happening?
Line going up → more pressure - a compression is happening.
Line going down → less pressure - a rarefaction is happening.
What is a wavelength?
The distance between successive crests of a wave.
What is an amplitude?
The distance between the central line and either the peaks or the bottom of a crest of a wave.
What is frequency?
The number of times per second that a sound pressure wave repeats itself.
What does the wavelength represent?
Give an example.
It represents the PITCH.
For example, if it is very short the sound will be high pitched and squeaky, while if the wavelength is longer will be low pitched.
What does the amplitude represent?
Give an example.
It represents LOUDNESS.
For example, if it is very short the sound will be quiet, while if the amplitude is a lot it will be loud.
If there are thin and short waves how is the sound?
The wavelength is thin so the sound is HIGH PITCHED.
The amplitude is little so the sound is NOT LOUD.
So the sound of the wave will be squeaky and quiet.
If there is an elongated and short wave, what will it represent?
The wavelength is long so the sound is LOW PITCHED.
The amplitude is short so the sound is NOT LOUD.
So the sound of the wave will be low and quiet.
