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A spherical body which possesses a dense and resisting superficies will move as much in the rebound resulting from the resistance of a smooth and solid plane as it would if you threw it freely through the air, if the force applied be equal in both cases. Oh, admirable justice of thine, thou first mover! thou hast not permitted that any tone should fail to produce its necessary effects, either as regards order or quantity. Seeing that a force impels an object which it overcomes a distance of one hundred arms' length, and if in obeying this law it meets with resistance, thou hast ordained that the force of the shock will cause afresh a further movement, which in its various bounds recuperates the whole sum of the distance it should have travelled. And if you measure the distance accomplished by the aforesaid bounds you will find that they equal the length of distance through which a similar object set in motion by an equal force would travel freely through the air.
A spherical body which possesses a dense and resisting superficies will move as much in the rebound resulting from the resistance of a smooth and solid plane as it would if you threw it freely through the air, if the force applied be equal in both cases. Oh, admirable justice of thine, thou first mover! thou hast not permitted that any tone should fail to produce its necessary effects, either as regards order or quantity. Seeing that a force impels an object which it overcomes a distance of one hundred arms' length, and if in obeying this law it meets with resistance, thou hast ordained that the force of the shock will cause afresh a further movement, which in its various bounds recuperates the whole sum of the distance it should have travelled. And if you measure the distance accomplished by the aforesaid bounds you will find that they equal the length of distance through which a similar object set in motion by an equal force would travel freely through the air.
Approximate author period: c. 1486 AD · medieval
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- Leonardo da Vinci
Attribution: attributed - Country attributed
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- Approximate author period: c. 1486 AD · medieval
author lifetime midpoint (1452–1519); not quotation composition date
An author lifetime, approximate period or collection date is not necessarily the date when these words were first written or spoken. - Recorded source
- Thoughts on Art and Life (1906 English edition) (1906 AD)
Thoughts on Science, complete printed unit 14; Maurice Baring translation; Boston: The Merrymount Press,1906
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The voice behind the words.
Represented by the complete source-numbered selections in Thoughts on Art and Life, Maurice Baring’s1906English translation, edited by Lewis Einstein. The catalogue records1452–1519; the historical collection is a selection from notebooks, not a continuous book composed by Leonardo or independent authentication of every attributed passage.
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