Dimethyl-meta-aminophenol crystallizes in small prisms which melt at 87° C. It condenses with phthalic anhydride to form rhodamine, and with succinic anhydride to rhodamine S.
The acid is thus obtained in colourless rhombic prisms of the composition C 6 H 8 0 7 +H 2 0.
He would have been more at home in a state of things which did not demand from its leading statesman great popular power; he had none of those " isms " and " prisms of fancy " which stood in such good stead some of his rivals.
Prisms deflect rays of light towards their bases.
Similarly the first moment of a solid figure may be regarded as obtained by dividing the figure into elementary prisms by two sets of parallel planes, and concentrating the volume of each prism at its centre.