difform การใช้

• He gave a proof of the mean speed theorem stating that " the latitude of a uniformly difform movement corresponds to the degree of the midpoint " and used this method to study the quantitative decrease in intensity of illumination, stating that it was not linearly proportional to the distance, but was unable to expose the Inverse-square law, which was postponed nearly 250 years until its discovery by Johannes Kepler in 1604.
• He gave a proof of the mean speed theorem stating that " the latitude of a uniformly difform movement corresponds to the degree of the midpoint " and used this method to study the quantitative decrease in intensity of illumination in his " Summa logic?et philosophi?naturalis " ( ca . 1349 ), stating that it was not linearly proportional to the distance, but was unable to expose the Inverse-square law.
• Only Domingo de Soto, a Spanish theologian, in his commentary on Aristotle's " Physics " published in 1545, after defining " uniform difform " motion ( which is uniformly accelerated motion )  the word velocity wasn't used  as proportional to time, declared correctly that this kind of motion was identifiable with freely falling bodies and projectiles, without his proving these propositions or suggesting a formula relating time, velocity and distance.