Frequency Corrector

The photos below are representing a oscilloscope that was build to correct signals and diminish the noise, related with frequency, inside of an electronic apparatus. The idea is that a magnetic field is applied to the current that passes to the reading channel, the black object that looks like a flashlight, and corrects the possible deviation that the signal may bring from the source. It also can be use by professionals, like electronic engineers or sound engineers, to understand what is going on inside of a device and make possible to explain any anomaly that is happening. The last photo represents the electronic oscilloscope, and the first photos is the more "rudimentary" one.    

In this photo students were trying to work or understand how to make different sounds using an oscilloscope. By increasing the frequency, they could hear a higher pitch; and by decreasing the frequency, a lower pitch could be heard. For example, for the triangle wave, the vibrations would be lower than the ones produced by the sine wave; likewise, the square wave produced a lower vibration. They also saw that by changing the amplitude of the waves, the sound would changing also. This is because it can take less or more time traveling from one side to another. A lower one would take more time, since the space between the waves would increase, and a higher one would take less time because the space between them would decrease.