engineering and science courses

Electrical, signals, mechanics, math, and natural-science courses — intuition first. These are university lectures, not the Korean electrical-engineer exam track. Start with engineering math, circuits, or statics.

Electrical & Electronic

Circuit Analysis

Voltage, current, and impedance, solved by sight.

See how semiconductors, diodes, and transistors work.

Electromagnetics

Touch electric and magnetic fields as space.

Electric Machines

How transformers, motors, and generators work.

Three-phase power, transmission, and the grid.

Signals, Control & Communications

Signals, Systems and Control

From signals, systems, and Fourier to control.

Modulation, noise, and how information travels.

Mechanics

strength of materials explained

stress, strain, Mohr's circle, torsion, buckling

dynamics explained

kinematics, Newton's laws, work-energy, rigid body dynamics

mechanical vibrations explained

natural frequency, damping, resonance, normal modes

thermodynamics explained

first law, entropy, Carnot cycle, ideal gas

statics explained

free body diagram, truss method of joints, friction, centroid

fluid mechanics explained

Bernoulli, Reynolds number, viscosity, buoyancy, drag

Mathematics & Foundations

engineering mathematics

linear algebra, differential equations, Fourier, vector calculus

probability and statistics explained

Bayes' theorem, confidence interval, hypothesis testing, regression

Natural Science

quantum mechanics explained

wave-particle duality, Schrödinger equation, uncertainty principle

physical chemistry explained

orbitals, hybridization, periodic trends, crystals

optics and waves explained

interference, diffraction, refraction, polarization

orbital mechanics Kepler

Kepler's laws, orbits, Hohmann transfer, gravity assist