Physics

Physical Quantites

• Physical Quantity
• What is a dimension in physics?
  • Dimensional Analysis
  • Definition of Dimensionless Quantity
• Unit of Measurement
  • International System of Units
• Characteristic Length in Physics
• Mass
• Definition of Density in Physics $\rho = m/V$

Units

• Length:
  • Angstrom $\text{\AA}$
  • Meter $\mathrm{m}$

물질의 구성

• Atom
  • 원자핵
    • 양성자
  • 전자
• 원소
• 분자

Elementary

• Easily Calculating the Equivalent Resistance in a Parallel Circuit
• Using Harmonic Mean to Calculate Average Speed $v = \frac{2ab}{a+b}$
• Formula for the Velocity of a Falling Object $v = \sqrt{2gh}$
• Uniformly Accelerated Motion and Its Graphs
• Momentum and Impulse
• Uniform Motion and Its Graphs
• Simple Proof of the Conservation of Momentum (High School Level)
• Collision of Two Bodies and Coefficient of Restitution
• Perfectly Elastic Collisions and Conservation of Kinetic Energy
• The period of a single pendulum motion is independent of the mass of the pendulum
• Various Definitions of Modulus of Elasticity
• Frictional Force and Coefficient of Friction

Optics

• 1-Dimensional Wave Equation
• Sine Waves and Complex Wave Functions
• Wave Boundary Conditions: Reflection and Transmission
• Vertical Waves, Parallel Waves, Polarization
• What are Vibration Frequency and Frequency?
• What is Spectroscopy?
• Spectrum and Fraunhofer Lines

Theory of Relativity

• Worldlines and Galilean Transformation
• Theory of Relativity and Lorentz Transformation
  • Derivation of Lorentz Transformation
• Features of Lorentz Transformation:
  • Loss of Simultaneity
  • Time Dilation
  • Length Contraction