BRANCHES OF PHYSICS

Physics

The study of the interaction of matter & energy or the relationship of force & motion.

It's the fundamental in science.

Classical & Modern

2 Types of Branches in Physics

Classical

The laws here are made BEFORE the 20th Century and it's focused on observanle phenomena & macroscopic objects

Modern

The laws here are present or made DURING the 20th century. It explains atomic scales, space objects, and microscopic objects

Mechanics, Thermodynamics, Optics, Electromagnetic, Acoustic

The 5 Classical Branches of Physics

Atomic, Nuclear, Quantum, Relativity

The 4 Modern Branches of Physics

Mechanics

is the study of motion, forces, and energy. It explains how objects move when forces act upon them and how they remain at rest when forces are balanced

Thermodynamics

deals with heat, temperature, and their relationship to energy and work. It describes how thermal energy is transferred between systems and how it can be converted into mechanical energy (and vice versa).

Electromagnetic

focuses on the forces that occur between electrically charged particles and how these interactions create electric fields, magnetic fields, and light.

Optics

is the branch of physics that studies light and its interactions with matter. Classical optics focuses primarily on the behavior of visible, ultraviolet, and infrared light. It looks at light as a wave phenomenon, explaining how it bends, bounces, and travels through different mediums.

Acoustics

is the study of sound and mechanical waves traveling through gases, liquids, and solids. Because sound cannot travel through a vacuum, classical acoustics focuses on how vibrations propagate through a physical medium, how they are produced, and how they are perceived.

Quantum

is the physics of the unimaginably small. It studies the behavior of matter and light at the atomic and subatomic levels (atoms, electrons, protons, and quarks).

Relativity

completely transformed how we understand space, time, and gravity, particularly at extreme speeds or massive scales

Atomic

focuses on the interactions between matter and light at the scale of one or a few atoms. While it relies heavily on quantum mechanics, it specifically studies how atoms are structured, how molecules form bonds, and how light (photons) interacts with these particles.

Nuclear Physics

focuses on the nucleus itself—the protons and neutrons, and the immense forces holding them together (or tearing them apart in fission and fusion).

Galileo Galilei

The Father of Modern Science

Kinematics

It describes how an object moves through space and time without any regard for what started, stopped, or changed that motion.

Dynamics

is the study of forces and their effects on motion. It explains why an object moves the way it does.