Bibliographic Details
| Title: |
Poka-yoke mini pop-up spectroscopes. |
| Authors: |
Chu, Ching-Chi1 (AUTHOR) ccchu@phy.ncu.edu.tw |
| Source: |
Physics Teacher. Apr2026, Vol. 64 Issue 4, p244-244. 1p. |
| Subjects: |
Spectroscope, Diffraction gratings, Color blindness, Teaching aids, LED lighting |
| Abstract: |
The article focuses on practical improvements to a previously published portable pop-up spectroscope designed for classroom use. To prevent assembly errors caused by misorienting the symmetrical square diffraction grating, the author introduced a "poka-yoke" (mistake-proofing) modification by replacing it with an asymmetric rectangular grating, ensuring correct orientation. This change has eliminated grating-orientation errors in over 4,000 student uses and reduced material costs to about US$1 per unit with a 5-minute assembly time. The improved design enhances portability and shifts instructional focus from troubleshooting to experimental investigations, such as simulating protanopia (red–green color blindness) using RGB LED-illuminated Ishihara plates. [Extracted from the article] |
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| Database: |
Engineering Source |
