How to Analyze Wave Period, Amplitude, and Frequency from a Graph?

[akatsafa]

How do I find the period, amplitude, and frequency from a graph? It doesn't give me any numbers except that the voltage scale is 0.200 volts/division and the time scale is 0.50 milliseconds/division. How do I use these numbers to find the period, amplitude, and frequency?

 

[eJavier]

If it's like using an oscilloscope, then you have to count how many divisions are in a single period, and with that you can calculte the freq. as well

For the amplitude count how many divisions in the y-axis does the waveform have

 

[M98Ranger]

To find the period, amplitude, and frequency from a computerized wave display, you will need to use the voltage and time scales provided. The period is the time it takes for one complete cycle of the wave, and it can be found by measuring the distance between two consecutive peaks or troughs on the graph. In this case, since the time scale is 0.50 milliseconds/division, you can count the number of divisions between two consecutive peaks or troughs and multiply it by 0.50 milliseconds to find the period.

The amplitude is the maximum displacement of the wave from its equilibrium position and can be found by measuring the distance between the highest peak and the lowest trough on the graph. In this case, since the voltage scale is 0.200 volts/division, you can count the number of divisions between the highest peak and the lowest trough and multiply it by 0.200 volts to find the amplitude.

Lastly, the frequency is the number of complete cycles the wave completes in one second and can be found by dividing the number of cycles (determined by the period) by the time it takes to complete those cycles. In this case, since the time scale is 0.50 milliseconds/division, you will need to convert it to seconds by multiplying it by 0.001. Then, you can divide the number of divisions between two consecutive peaks or troughs by the time in seconds to find the frequency.

In summary, to find the period, amplitude, and frequency from a computerized wave display, you will need to use the voltage and time scales provided and apply the appropriate conversions.