9/6 Little experience with wave length and frequency

Today's lecture was the introduction of mechanical wave. The purpose of this experiment is to prove 

the relationship between frequency and wave length by using three different methods to test. The three

methods are 

1: The same length of spring but with different number of nodes

2: The same number of nodes but with the different length of spring

3: Using guitar string and record the air pressure with logger pro, and graph the relationship of it's 

frequency and the length of the string segment that is able to vibrate freely (Done by Prof. Mason)

The method that our group used is same length of spring but with different number of waves.

Even thought I do not have the  data set available around me, but it had been showed in the class that it satisfied with linear relationship between wave length and frequency

Here is the pic's and video that we were doing the experiement

 

Since the spring is moving too fast that the camera cannot capture the movement of spinrg

there is a video version of the experiment