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Sneezing, pixel spacing, and geometric optics

 

作者: Andreas Müller,  

 

期刊: The Physics Teacher  （AIP Available online 1998）
卷期: Volume 36, issue 8  

页码: 509-511

 

ISSN:0031-921X

 

年代: 1998

 

DOI:10.1119/1.879942

 

出版商: American Association of Physics Teachers

 

关键词: geometrical optics;colour screens;everyday phenomena;hands-on-experiments

 

数据来源: AIP

 

摘要:

When looking at a color monitor through a refracting medium like a water droplet or a glass sphere, the individual color pixels become visible. It is shown how this qualitative observation (recently described in this journal) can be turned into an approximate measurement of the pixel distance ( the so-called dot pitch) by using nothing but the most common tools.

 

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