Philip Greenspun illustration project/Round 1/Request list/48

Philip Greenspun illustration project
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Round 1
Request list

• JIRA: https://jira.toolserver.org/browse/PGIP-73
• US$40

(en) HEPA filters

• http://en.wikipedia.org/wiki/HEPA
• Examples: http://www.cdc.gov/OD/OHS/biosfty/bsc/fig1.htm
• Should be a set of three examples of HEPA filters, showing the mechanisms Interception, Impaction and Diffusion.
• tags: ?