Day 110: Diffraction and Interference Lab Practicum

Today, students had two tasks:

  1. determine the wavelength of the laser
  2. determine the width of a human hair

The results were excellent. One group calculated a wavelength of 900 nm, but realized that wasn’t a reasonable value of the Helium-Neon red laser. Last year, I had students just measure the wavelength of the laser. This year, I added measuring the width of a human hair which emphasized what a precision instrument light can be.


  ##optics ##practicumlab  

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