Physics Alive

Diffraction of DNA and the DNA of my Physics Class


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In this episode, I talk about DNA: a simple DNA diffraction and interference experiment using the spring from a pen, and the DNA, the structure of my introductory physics class during the spring '22 semester. 

 

Full show notes at:

www.physicsalive.com/dna

 

DNA Diffraction and Interference Lab and/or Demonstration

Figure 1: X-ray diffraction pattern of B-DNA labeled Photo 51 by Rosalind Franklin.

Figure 2: Interference pattern from a pen spring. Pattern produced from a red diode laser passing through the spring from a pen. Projected on a screen 8 meters away.

Here are the articles I referenced about DNA interference and diffraction experiments:

  • DNA Science AAPT Digi Kit
  • How Rosalind Franklin Discovered the Helical Structure of DNA: Experiments in Diffraction
  • Revealing the Backbone Structure of B-DNA from Laser Optical Simulations of Its X-ray Diffraction Diagram

    X-ray diffraction and DNA optical transform from the ICE (Institute for Chemical Education) Online store at wisc.edu

    • Optical transform demo kit
  • DNA optical transform kit
  • DNA of Brad's introductory physics class (Spring 2022)

    Star grading system:

    Here's the entire syllabus for the spring 2022 semester of PHYS 105: Survey of Physics II for life science majors:

    • Moser Syllabus 2022 Spring

    Specifications grading:

    • "Specifications Grading" by Linda Nilson
  • Short article about Specs Grading by Linda Nilson
  • Blog post on Specifications Grading by Robert Talbert
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    Physics AliveBy Brad Moser

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