Complex sentence: The role of the! 950's Psycho physicist were to build equippment independently, discover new phenomend and built their own equipment and discovered new phenomena and did very careful and inspired experiments on visual perception.
Split into simpler sentences: The role of the! 950's Psycho physicist were to build equippment independently, discover new phenomena. T and they built their own equipment and discovered new phenomena and did very careful and inspired experiments on visual perception.