Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Aerosol number size distributions averaged over the vaping sessions of fourth-generation e-cigarettes, compared with first-generation e-cigarettes. Double-coil, single aerosol exit hole atomizer at (a) 25 W (130 kW m−2), (b) 40 W (208 kW m−2), and (c) 80 W (365 kW m−2). Octa-coil, four aerosol exit holes atomizer at (d) 50 W (133 kW m−2), (e) 100 W (265 kW m−2), and (f) 150 W (398 kW m−2).
