The relationships between the stimulus (visual angle) and the perceived size and distance of the moon are summarized by the so-called "static size-distance invariance hypothesis" (SDIH): stimulus determines the ratio of perceived size to perceived distance.
Les relations entre le stimulus (angle visuel) et la taille et la distance perÃ§ues de la Lune sont rÃ©sumÃ©es par la soi-disant hypothÃ¨se d'invariance de la distance et de la taille (SDIH) : le stimulus dÃ©termine le rapport de la taille perÃ§ue sur la distance perÃ§ue.