section_path: Scientific contributions/Physics/Falling bodies/Two New Sciences
section_name: Two New Sciences
paragraph_text: Two New Sciences
  
  In his 1638 Two New Sciences, Galileo's character Salviati, widely regarded as Galileo's spokesman, held that all unequal weights would fall with the same finite speed in a vacuum. Salviati also held that this could be experimentally demonstrated by the comparison of pendulum motions in air with bobs of lead and of cork which had different weights but which were otherwise similar.