Galileo Galilei

Born 1546 Pisa

Died 1642 Florence

Aristotle’s Motion Until Galileo, Aristotle’s theory on motion stood. –Heavier objects fall faster –Natural motion is toward earth –Any other motion was violent motion and required a force to move it.

Galileo Galileo quickly became aware that his talents lay in mathematics. He rose through the academic ranks at various universities in Italy One of his early accomplishments was suggesting that theories could be tested through experiment.

Galileo’s Experiments Nova Experiments

Disproving Aristotle Heavier objects do not fall faster. –Proved via experiment and stones tied together thought experiment Projectile motion –Vertical and horizontal motion act independently Natural motion is circular

Inclined Plane Experiment

Galileo’s Motion An object remains in motion unless acted upon by other forces. Natural motion is circular Galileo also invented the telescope and used it to study the heavens Persecuted by church for supporting the Sun centered model