![]() Galileo had an extraordinary imagination, crucial for scientific progress. ![]() Fresco by Giuseppe Bezzuoli in the Museo Galileo – Institute and Museum of the History of Science, Florence, Italy. We repeated this experiment more than once to measure the time with an accuracy such that the deviation between two observations never exceeded one-tenth of a pulse-beat.“įrom these observations, he concluded that bodies under natural acceleration (the name Galileo gave to gravity) behave in the same way, regardless of their weight or stuff. Having placed this board in a sloping position, we rolled the ball. Having made this groove very straight, smooth, and polished as possible, we rolled through it a perfectly round bronze ball. On its edge, a channel was cut a little more than one finger in breadth. “ A piece of wooden molding or scantling, about 12 cubits long, half a cubit wide, and three finger-breadths thick, was taken. Salviati explained Galileo’s breakthrough experiment in detail: He used the voice of three curious characters: Salviati, Sagredo, and Simplicio, who passionately discussed situations -supporting or refuting Aristotle’s conclusions, formulating theorems, and describing experiments - giving rise to multiple observations of the natural world. Galileo left a written record of several of his experiments in his work Dialogues on Two New Sciences (1638). ![]() His helpers tilted the bar, dropping lead and cork spheres down the canal to measure the time they took to slide from one point to another. Galileo instructed his craftsmen to build a long wooden bar with a highly polished channel. What did Galileo actually do to come up with his brilliant ideas about movement? However, no evidence supports that anecdote. ![]() According to a popular legend, during the XVII century, Galileo Galilei threw stones of different sizes and materials from the leaning tower of Pisa to demonstrate how falling objects behave. ![]()
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