very brief ntro to particle physics _pearce
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A (Very Brief) Introduction to Particle PhysicsStockholms Skolors Kosmiska Ntverk2006-02-07Mark Pearce - KTH Stockholm -
Mark Pearce ([email protected])
What is Particle Physics?
Particle physics is a branch of physics that studies the elementary constituents of matter and radiation, and the interactions between them
Mark Pearce - KTH Stockholm -
According to Wikipedia
Some History ~500 BC - Thales of Miletus Water is the most fundamental substance on Earth ~450 BC - Empedocles No its earth, air, fire and water ! ~400 BC - Democritus Introduces the concept of atoms ~350 BC - Aristotle Introduces the scientific method 1500 AD - Copernicus The Earth revolves around the Sun scientific revolution 1600 - Galileo One of the first to adopt theories on the basis of scientific method 1700 - Newton Develops Classical Mechanics 1800 - Faraday Discovers electromagnetismMark Pearce - KTH Stockholm -
1873 - Maxwell Develops electromagnetic theory 1895 - Rntgen Discovers X-rays 1893 - The Curies Separate radioactive substances never seen on Earth before 1898 - J.J. Thompson Discovers the electron - The start of particle physics !
Mark Pearce - KTH Stockholm -
After Thompson ...
Mark Pearce - KTH Stockholm -
Models of the Atom
Modeller av atomen
Thomson och Kelvin (1904)
Rutherford, Geiger + Marsden (1909-1914)
+AtomMark Pearce - KTH Stockholm -
Guld folie
A Journey into Matter
cm
10-10 m
10-14 m
10-15 m