https://phet.colorado.edu/sims/html/wave-interference/latest/wave-interference_en.html2.

Using the stimulation to answer the questions 1 & 2 and 3 SHOW ALL WORK.

1. Measure the wavelength of the light wave being produced. You will want to use the simulator's measuring tape.

Now set the source separation to be 3.5 * the wavelength you measured in #2.

2. Locate two positions of maximum field movement above the central point. Using the simulation's tape measure, precisely measure the distance from each laser source to each maximum as shown in figure #2. Organize your data in the table below. You may want to expand the simulator size for ease of measuring, and "show the screen" to better view where maximums occur.

Answer:

Measurement #	L1	L2	L2- L1	(L2- L1)/
1
2
3

3. Now locate two positions of minimum field movement above the center. Measure the distance from each source to each maximum. Organize your data in a table.

Answer:

Measurement #	L1	L2	L2- L1	(L2- L1)/
1
2