Grades 9-12: Students explore various light diffraction phenomena and then develop an understanding of the use of diffraction in the discovery of the structure of DNA.
PHYSICAL SCIENCES (Grades 9-12)
The diffraction and interference of light are easily observed phenomena that give direct, tangible evidence of the wave nature of light. Diffraction is at the root of many technologies, scientific techniques, and common visual phenomena. In this lab, students explore diffraction phenomena by shining a laser at a hair, a variable single slit made from pencils, and wire meshes of various size. After this introduction to the general principles of diffraction, students will use an ICE DNA Transform slide to develop an understanding of the use of diffraction in the discovery of the structure of DNA.
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