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1543
Andreas vesalius publishes on the fabric of the human body
This is considered to be the first great modern work of science and the foundation of modern biology. In it, Vesalius makes unprecedented observations about the structure of the human body. -
Galileo Galileo demonstrates the properties of gravity
Galileo demonstrates, from the top of the leaning tower of Pisa, that a one- pound weight and a one hundred-pound weight, dropped at the same moment, hit the ground at the same moment, refuting the contention of the Aristotelian system that the rate of fall of an object is dependent upon its weight. He expounds fully on this demonstration years later in his 1638 Discourse on Two New Sciences. -
Galileo publishes messenger of the heavens
Galileo's 24-page booklet describes his telescopic observations of the moon's surface, and of Jupiter's moons, making the Church uneasy. The Inquisition soon warns Galileo to desist from spreading his theories. -
Johannes kepler teveals his thrid final law of planetary motion
Kepler's laws of planetary motion describe the form and operation of planetary orbits, and are the final step leading to the academic rejection of the Aristotelian system. -
Otto von giericke invents the air pump
Guerick demonstrates the properties of a vacuum by using his air pump to take the air from within his famous "Magdeberg hemispheres," which, though easily separated in normal conditions, could not be parted by two teams of sixteen horses once he had removed the air. -
William Dedham and sir Isaac newton
William Derham's Physico-theology, and the second revised edition of Newton's Principia (containing an introduction by Roger Cotes) suggest a movement to use the findings of science as evidence for 'Design' and hence as evidence for the 'Designer'. -
Issac newton health
March 18 - Newton's health fails, he collapses and borders on death; shortly thereafter, Newton dies at Kensington between 1.00 and 2.00am. On 28 March his body lays in state in Westminster Abbey where he is buried on 4 April. -
Atomic Theory
Matter is composed of discrete units of atoms -
Avogadro’s Law
The Law states equal volumes of all gases, at the same temperature and pressure, have the same number of molecules. Experimental gas law relating volume of a gas to the amount of substance of gas present. -
Ohm’s Law
the current through a conductor between two points is directly proportional to the voltage across the two points. -
Doppler Effect
The change in frequency or wavelength of a wave for an observer who is moving relative to the wave source. When the source of the waves is moving towards the observer, each successive wave crest is emitted from a position closer to the observer than the previous wave. -
Absolute Zero
The lower limit of the thermodynamic temperature scale, a state at which the enthalpy and entropy of a cooled ideal gas reaches its minimum value, taken as 0. Absolute zero is the point at which the fundamental particles of nature have minimal vibrational motion. -
Periodic Table
Tabular arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties, whose adopted structure shows periodic trends. -
Radioactive Decay
Process by which an unstable atomic nucleus loses energy by emitting radiation. A material containing such unstable nuclei is considered radioactive. -
Greenhouse Effect
Radiation from a planet's atmosphere, warms the planet's surface to a temperature above what it would be without its atmosphere. If a planet's atmosphere contains radiatively active gases they will radiate energy in all directions. -
Atomic Nucleus
Small, dense region consisting of protons and neutrons at the center of an atom. Protons and neutrons are bound together to form a nucleus by the nuclear force. -
Continental Drift
Movement of the Earth's continents relative to each other, thus appearing to "drift" across the ocean bed. The idea of continental drift has been subsumed by the theory of plate tectonics, which explains how the continents move. -
I Model of the atom
Niels bohr created his idea of what he believes the atom looks like. This model includes a positively charged nucleus worth negatively charged electrons circuiting around it. He believes it circulates like our solar system does. -
Neutron discovery
James Chadwick discovers the neutron.the neutron is a subatomic particle that contains no electric charge.the neutron is present in the nucleus along with protons -
Polio vaccine development
Jonás salk developed and tested the first polio vaccine.this vaccine is used to prevent poliovirus and is given by injection and one that has been weakened is given by mouth.the virus is contracted by the feces from another environment.
