Purchase Solution

Oscilloscope and Frequencies

Not what you're looking for?

Ask Custom Question

1. How can Lissajous patterns be used in checking out specific frequencies (such as in tuning a piano)?

2. What makes the sound of a violin different from that of a piano when they are playing the same note?

3. Can the wavelength of a signal be measured on an oscilloscope? Explain.

Purchase this Solution

Solution Summary

This solution is provided in 712 words in both a .doc and .pdf file attached. It discusses sinusoidal signals and includes equations and diagrams to further understanding of the problem.

Solution Preview

Hello and thank you for posting your question to Brainmass!

The solution is attached below in two files. The files are identical in content, only differ in format. The first is in MS Word XP Format, while the other is in Adobe pdf format. Therefore you can choose the format that is most suitable to you.

Check out:

http://www.clubi.ie/amhiggins/adsr.html (where the ADSR figures were taken from)

Usually in an oscilloscope, the input signal is a single wave, and the x-axis is the time while the y-axis is the amplitude of the signal.
However, a Lissajous' pattern is a result of two input sinusoidal signals. Then the x-axis is representing the amplitude of the first signal and the y-axis represents the amplitude of the second signal.

Where  is the relative phase difference between the signals.

When the frequencies are equal and the phase angle is zero we can see that:

Which is the equation of a straight line:

The slope of the pattern is the ratio between the amplitudes.


Purchase this Solution

Free BrainMass Quizzes
Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

Basic Physics

This quiz will test your knowledge about basic Physics.