u “s Dielectric constant of particle au Ion mobility a Force in dynes Ti Resistive force in dynes iT | * Cunningham constant (approximately .86) Radius of cylinder et oat Constant of proportionality (general) 5 2x Baltzman constant = 1.36 x ror4s ere/* kelvin *~ "3 ~~ UNCLASSI FIED Diameter of particle (cm) (for air at STP 600 em/sec/ESU/cm) Diameter of particle in microns Velocity cm/sec Ion velocity Viscosity of medium (for air at STP = 171 x 10~© poises) Mass in grams Acceleration of gravity (980 cm/sec/sec) mm Radius of particle Difference in density of particle and media (for dust in air P = density of dust) Charge in stat coulombs Electric field intensity (stat volts/cm) Mean free path of air molecules (for No STP = .9l x 1075 cm) Absolute temperature Charge on electron = L.8 x 10-10 stat coulombs RMS molecular velocity = 9.8 x 103 cm/sec at 15°C ~86- UNCLASSI FIED