Physics is at the crown of 
   science 
   • Physics method is very useful, now used in many 
    different areas
   • Physics laws are very useful, universal.
   • Other areas of studies have also helped advances in 
    physics.
   • Physics is at the crown of science. 
   Physics is closed related to 
   other fields
   • Math
   • Chemistry
   • Biology
   • Engineering
   • Financial market
   • Social science
   • Archeology
   • ….
   Physics and Math
   • Physics is science but math is not
   • Math starts with definitions and axioms and derive 
    consequences, no observation is need, no 
    falsification needed.
   • Math in some sense is a logical system. 
   • However, it is amazing to see that math is a useful 
    language for physics. 
   Why it is so amazing?
   • How can the moving trajectory of an object can be 
    described by a math equation or curve? 
   • Almost all laws of physics can be written down as 
    math equations: differential equations
   • Thus exploring the consequence is solving the 
    equations.
   • The equations have certain beauty, like F=ma, 
    Maxwell equation, Schrodinger equation, Dirac 
    equation, Einstein equation…
   Relationship 
   • New math is discovered in physics, but math is also 
    useful for physics discoveries.
   • Math is useful for smart thinking: an important part 
    of physics
   • Math is an indispensive tool.
   • We still don’t have enough math to understand 
    some deep physics
   • However, physics is not math. Many traditional 
    teaching of physics turning into math exercise!