Merged optical strategies. You will find many proprietary optical smoke measurement devices like the 'nephelometer' or maybe the 'aethalometer' which use numerous various optical methods, which include more than one wavelength of sunshine, within only one instrument and use an algorithm to offer a superb estimate of smoke. )[18] https://andreyoana.tnpwiki.com/6752619/the_basic_principles_of_smoking