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Estimating the size of blood cells by staring into space

 

作者: David Keeports,  

 

期刊: The Physics Teacher  （AIP Available online 1998）
卷期: Volume 36, issue 1  

页码: 58-58

 

ISSN:0031-921X

 

年代: 1998

 

DOI:10.1119/1.879967

 

出版商: American Association of Physics Teachers

 

关键词: floaters;image formation;diffraction;estimates;blood cells

 

数据来源: AIP

 

摘要:

An order-of-magnitude estimate of the size of red blood cells is obtained by locating a distant object whose height in the visual field matches that of an eye floater and then calculating the retinal image height of that object.

 

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