we want to see wnat IS nappenmg wutn our waves, so IT you move me suoer at the bottom of the graph, you will reduce the time interval between points, and be able to see individual waves. With the left fork active at a frequency of 100 Hz, move the slider until you can see three or four individual waves. Making sure both frequencies are set to 100, tap the right hand fork and look at the graph. (In this mode, the wave from the left fork is displayed as a red line, the wave from the right fork is blue). i. How many waves do you see displayed? 2 waves ii. What is the difference between the two waves? One beat faster and the other is a slow beat iii. What do you think the black waveform represents? It's used to calculate and display the level or voltage of a signal over time iv. Why can't we see both red and blue waves? Because they are invisible to the human eye