For example, a rotating tank with an ice bucket in the center can represent the Earth, with a cold pole simulated by the ice bucket.
2.
Ernst Kretschmer ( 1888 1964 ) divided personality into two " constitutional groups " : Schizothymic, which contain a " Psychaesthetic proportion " between sensitive and cold poles, and Cyclothymic which contain a " Diathetic " proportion between gay and sad.