1. Biomedical Applications of Particle Accelerators Introduction to Accelerators Superconducting Magnets - MRI Hadron Therapy Radioactive Isotopes for Nuclear Medicine Synchrotron…

Slide 1Chapter 32 The Atom and the Quantum Slide 2 When Rutherford directed a beam of alpha particles into gold foil, most of the alpha particles a.were stopped. b.bounced…

1.Chapter 3 Elements, Atoms, and Ions2.   3. Alchemy- pseudoscience based upon the belief that cheap metal could be turned into gold Greek philosopher Aristotle proposed…

~ ~ THE THOMSON MODEL OF THE ATOM In 1898 ,Thompson surveyed all the evidence that the atoms consist of charged particles . he described an atom as a sphere of positive electricity…

Slide 1A History of the Atom A long time to study a little thing Slide 2 Introduction Slide 3 The Philosophers Ancient Greeks Ancient Greeks Formed ideas of nature based…

Slide 1Rutherford’s Gold-Foil Experiment Slide 2 Radioactivity u Radioactivity had been discovered recently, in 1895, by Henri Becquerel, based on Wilhelm Roentgen’s…

Slide 1 Chapter Three Atoms and the Periodic Table Chapter 3 Slide 2 2 Dalton’s Atomic Theory (1808) 1. Elements are composed of extremely small particles called atoms.…

Slide 1 Slide 2 Atomic Theory Slide 3 Slide 4 Slide 5 DEMOCRITUS 460 - 370 BC The Greek philosopher Democritus proposed that all matter was made of small, unbreakable particles…

CHAPTER 5 ATOMIC STRUCTURE & PERIODIC TABLE ATOMIC STRUCTURE DEMOCRITUS TEACHER, 4th Century BC ATOMIST SCHOOL of THOUGHT ATOMIC STRUCTURE MATTER TINY PARTCLES CALLED…

Atomic Structure – The Nucleus! The Important Idea Matter is discontinuous – it cannot be subdivided infinitely. Credited to Democritus of Abdera (ca. 400 BC) – matter…