What was the point of this prelab i just did?

[lc99]

Homework Statement

Homework Equations

The Attempt at a Solution

It seems like i was just trying to figure out the frequency by finding the slope, but what exactly is this of importance for?

 

[Charles Link]

It looks like they are trying to teach you some of the basics of waves, as well as a little bit of techniques on making graphs from a few data points to determine linear relationships, etc. $\\$ When working with light waves from a given source, the frequency of a monochromatic (single color) source is fixed, but when it travels through different media, (e.g. air, water, glass), the speed (of light) will change, depending on the index of refraction of the material, so that the wavelength changes. What you did in this experiment should help give you a good introduction that topic, when you encounter it.

 

[lc99]

It looks like they are trying to teach you some of the basics of waves, as well as a little bit of techniques on making graphs from a few data points to determine linear relationships, etc. $\\$ When working with light waves from a given source, the frequency of a monochromatic (single color) source is fixed, but when it travels through different media, (e.g. air, water, glass), the speed (of light) will change, depending on the index of refraction of the material, so that the wavelength changes. What you did in this experiment should help give you a good introduction that topic, when you encounter it.

Oh i see. So, contrary to saying the velocity of speed stays constant in a certain medium, it would change when the medium changes except that the frequency stays constant.