the scientific revolution science from copernicus to newton
TRANSCRIPT
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The Scientific Revolution
Science from Copernicus to Newton
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Origins of the New Science
Basis of the Scientific Revolution:
• 1. Conflicting classical sources (Aristotle, Ptolemy, Galen)
• 2. Examination / focus of Renaissance artists on nature
• 3. Development of technical skills
• 4. Use of mathematics to understand nature
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Forces influencing science • 1. Aristotelian Philosophy: provided a
starting point – Matter made of four elements (earth, wind, water
and fire) • 2. Neo-Platonism: revival of Platonic
philosophy – emphasis on mathematics
• 3. Mystical / alchemy: metaphysical (spiritual / moral) explanation of the world – Paracelsus: doctor / alchemist who believed that
disease could be diagnosed and treated with ingested medicine
• 4. Natural Philosophy: attempt to explain the natural world
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Characteristics of the Scientific Revolution• Europeans began to challenge classical thought • Materialistic: all matter made up of the same
material & subject to the same laws • Mathematical: use calculation to replace common
sense – measurable, repeatable phenomena – People began to understand the mathematical nature of
the universe
• Science boils down to the mathematical relationship
• Development of scientific institutions began; Labs, universities, journals, language, careers
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Nicolaus Copernicus (1473-1543)
• Polish monk, mathematican and astronomer.
• Presented first serious challenge to Ptolemy’s geocentric universe.
• In On the Revolution of the Heavenly Spheres he proposed heliocentric theory
• Avoided persecution through death
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Tycho Brahe (1546-1601)
• Built Europe’s first modern astronomical laboratory
• Discovered a supernova and comet.
• Believed all other planets revolved around the sun while the earth remained stationary.
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Johannes Kepler (1571-1630)• Supported
Heliocentric and states that revolutions are elliptical (German) – Developed a
mathematical formula as proof
– Developed three laws of planetary motion
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Laws of Planetary Motion
• 1. All planets revolve around he sun in elliptical orbits.
• 2. The velocity of the planet varies according to its distance from the sun (closer = faster, further = slower)
• 3. set out mathematical formula to explain the physical relationship among the moving planets and the sun.
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Galileo Galilei (1564-1642)
• Asserted that planets are made of roughly same material as the Earth
• Wrote The Starry Messenger (1610)
• A Dialog Between the Two Great Systems of the World (1632)
• Challenged biblical view of the heavens
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Galileo and the Church
• In 1632, Brought before the Roman Inquisition for teaching “Copernicanism”
• Church was prepared to tolerate hypothesis (not fact). Galileo forced to recant.
• Tried and found guilty of heresy, house arrest; Dialogue was placed on the Index of Forbidden Books
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Isaac Newton (1642-1727)• Used experimental philosophy = physics • Start with the natural world and then try to
explain it • Natural philosophy began with an idea and
applied it to nature • Used math to create models based on nature -
used formulas • Expressed observations in numeric language • Math was a precise language that allowed for
replication, collaboration and the creation of new knowledge
• Principia Mathematica (Mathematical Principles of Natural Philosophy) (1687)
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Laws of Universal Gravitation
• 1. Law of motion - every object is at rest or motion and continues until some force affects the object
• 2. Rate of change of motion is in proportion to the force which affects the object
• 3. To every action there is always an equal and opposite reaction
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Discoveries in Anatomy
• Andreas Vesalius: – Galen (Classical source) established classical
beliefs regarding anatomy and physiology.
More accurate anatomical sketches
• William Harvey: – Blood circulates throughout the body in a
continuous loop – Previously believed that there were two
circulation systems – Heart as a pump
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Discoveries in Chemistry
• Robert Boyle– supported atomic view of matter -
chemistry – Boyle's Law: relationship between
pressure and gas – Promoted the use to experimental
technology
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The Scientific Method
• Use of observation and data collection to prove or disprove a hypothesis had been used by various researchers for centuries (especially the Arabs)
• Scientists such as Copernicus and Galileo revive the use of these techniques in Europe.
• Later scientists build upon their methods toward a more codified scientific method.
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Francis Bacon
• Challenged Aristotle’s reliance on deductive reasoning.
• codification of the Scientific Method (inductive empirical experimentalism)
• The Advancement of Learning (1605)
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Rene Descartes
• Jesuit education; Schooled in Aristotelian philosophy
• Disagreed with the basis of Aristotelian philosophy
• Embraced Skepticism (people who use doubt as the basis of knowledge)
• Rejected absolute construct of knowledge, knowledge based on probability
• Constructed knowledge based on doubt, but reaffirmed the value of deductive reasoning.
• Used "proofs" to support philosophical learning • Could only accept that which you could prove
– "I think, therefore I am"
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Rene Descartes• Cartesian dualism: Mind and matter are separate,
so to is the physical world from intellectual constructs (basis for science) – Example: Ontological proof of god: – One could only accept God if you could prove it
exists – Descartes knew that he was not perfect – Only a perfect individual could place that
concept in ones mind – Therefore perfection must exist – What is perfection, existence without limits =
God – proof for God based upon doubt, if you doubt it
then it must exist at some level • Contrast it to Aristotelian proof: Causality • believed that humans could more completely
understand their world by using abstract principles • Believed in that nature operated based on a
Mechanical set of laws
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Blaise Pascal
• Scientist who studied probability and mathematics.
• He had concerns about science’s influence on faith.
• Wrote Pensees, reflections on faith and science.
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Scientific Societies
• As the importance of science grew, scientific societies formed to promote research and share knowledge.
• Many had gov’t connections and support: reflecting the growing influence of central governments,
• Rome (1603), Florence (1657), England (Royal Society, 1662), France (French Academy, 1666), Prussia (Berlin Academy, 1701)