POL handbook
Natural science and core engineering, in one place.
Chemistry, biology, physics, astronomy, earth science, electrical engineering, and mathematics — basics and essential formulas in Korean and English.
This site is a POL study handbook. It does not replace a textbook or a course. It gathers short basics and frequently used formulas by field so you can reopen them while revising. No login or account is required.
Start by opening a field card, then a topic. If you remember a formula name or symbol, use Search. For SI prefixes and physical constants, open Constants & units. Korean and English swap the same page from the header.
This is a study summary. For exams, lab work, or design, check the assigned textbook and current constants. It is not medical or legal advice, and it does not run a calculator or grade homework.
Browse fields
Fields
Chemistry
Atoms, bonding, the mole, solutions, equilibrium, and thermodynamics — how matter changes and exchanges energy.
Biology
Cells, genetics, metabolism, evolution, and ecology — how life copies information and spends energy.
Physics
Motion, force, energy, waves, heat, electromagnetism, and modern physics — nature as measurable law.
Astronomy
The solar system, stars, galaxies, and expansion — reading the sky with measurements and physical law.
Earth science
Rocks, plate tectonics, atmosphere, oceans, climate, and geologic time — Earth as a system.
Electrical engineering
Circuits, power, AC, components, semiconductors, and digital basics — computing and controlling current.
Mathematics
Algebra, geometry, trigonometry, calculus, statistics, and linear algebra — the language of the other fields.