P 1 p 2 ...p n), it is necessary to bring under view other functions associated with the same series of numbers: such, for example, as P P3 P2 P4 Pn -2 /, /, /, F i a i 1 a 2 Fi a 1 a 2 ...
It boils at 290°, forming a colourless vapour which just about the boiling-point corresponds in density to tetratomic molecules, P4; at 1500° to 1700°, however, Biltz and Meyer detected dissociation into P2 molecules.
Beckmann obtained P4 molecules from the boiling-point of carbon bisulphide solutions, and Hertz arrived at the same conclusion from the lowering of the freezing-point in benzene solution; E.
P4 represent the centres of load in a structure of four pieces, and the sides of the ~ polygon of resistances P1 P2 P2 P4 represent respectively the direc~ I~~ tions and positions FIG.
But if the cemented face of P4 is silvered, From Zeitschr.