Commutation relations scaling

Morawska and co-workers have produced a number of review articles on this topic. For example, Holmes and Morawska [20] reviewed several simple and complex models covering a wide range of urban scales for the dispersion of particulate matter. Morawska et al. [21] focused on vehicle produced ultrafine particles and discussed limitations of measurement methods, sources, characteristics, transport and exposure of these particles in urban environments. Their further review focused on indoor and outdoor monitoring of airborne nanoparticles [3]. Morawska [22] discussed the importance of airborne ENPs from the health perspective. Regulations and policy measures related to the reduction of ambient particulate matter were discussed in their follow-up article [23], Their recent review article discussed the commuters exposure to ultrafine particles and associated health effects [24]. 

The chart of this instrument is 10 in. wide and has rectangular coordinates. The scale is uniform if graduated in millivolts and departs from uniformity according to the temperature electromotive force relation of the couple, if calibrated in degrees of temperature. In multiple-point recorders a print wheel carrying four or more numbers is substituted for the pen. This wheel is turned in synchronism with the commutator so that the proper number is printed. A small inked roller turns in contact with the print wheel. The latter is depressed once a minute, a length of time sufficient to allow the balancing action to be completed after each couple is connected. 

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