๐Ÿ  Home โ˜ข๏ธ Incidents โšก Energy ๐Ÿ“… Timeline ๐Ÿญ Plants ๐ŸŒ Countries
๐ŸŒ Language:
Continue as Guest Join Server
โ† NexoHub

โš›๏ธ Physics Topics

Six major branches of physics - each with laws, equations, and real-world applications. Click any card for the full deep-dive.

โš™๏ธ
Mechanics
Forces, motion, energy - the foundation of classical physics.

Mechanics describes how objects move under the influence of forces. From Newton's laws governing everything from falling apples to orbiting planets, t...

๐ŸŽ Newton's Lawsโšก Energy & Work๐ŸŽฏ Momentum๐Ÿ”„ Circular Motion
6 key equations - Explore โ†’
๐ŸŒŠ
Waves & Optics
Vibrations, light, sound - how energy travels without matter moving.

Waves transfer energy through space without transferring matter. Sound, light, radio, seismic waves, and quantum probability amplitudes are all descri...

๐Ÿ“Š Wave Properties๐Ÿ”Š Sound๐ŸŒˆ Light & EM Spectrum๐Ÿ”ญ Optics
5 key equations - Explore โ†’
โšก
Electricity & Magnetism
Charges, fields, and currents - two forces that are actually one.

Electricity and magnetism are two aspects of a single electromagnetic force. Maxwell unified them in 1865. Virtually all modern technology - from powe...

โšก Electric Fields๐Ÿ”Œ Current & Circuits๐Ÿงฒ Magnetism๐Ÿ”„ Induction
5 key equations - Explore โ†’
๐Ÿ”ฎ
Quantum Physics
The strange rules governing everything at the atomic scale.

Quantum mechanics describes reality at the smallest scales. Particles behave like waves, have quantised energy, and can exist in superpositions of sta...

๐ŸŒŠ Wave-Particle Dualityโ“ Heisenberg Uncertainty๐Ÿ”ข Quantisation๐Ÿ•ณ๏ธ Quantum Tunnelling
5 key equations - Explore โ†’
๐ŸŒŒ
Relativity
Space, time, mass, and energy - all unified by Einstein.

Special relativity (1905) showed that space and time are relative, and mass and energy are equivalent. General relativity (1915) revealed gravity as t...

๐Ÿš€ Special Relativity๐Ÿ’ฅ Mass-Energy๐ŸŒ General Relativity
4 key equations - Explore โ†’
โ˜ข๏ธ
Nuclear Physics
The physics of atomic nuclei - fission, fusion, and radioactive decay.

Nuclear physics studies the structure and reactions of atomic nuclei. It underpins nuclear power, nuclear medicine, understanding of stars, and the or...

๐Ÿ“‰ Radioactive Decay๐Ÿ’ฅ Nuclear Fissionโญ Nuclear Fusion๐Ÿ”— Binding Energy
4 key equations - Explore โ†’

๐Ÿ“ Physical Constants

The fundamental constants of nature - the numbers that define the universe. Memorise the most important ones; use this page for the rest.

c
Speed of light
2.998 ร— 10โธ m/s
Relativity, EM waves, E=mcยฒ
h
Planck's constant
6.626 ร— 10โปยณโด Jยทs
Quantum mechanics, E=hf
e
Elementary charge
1.602 ร— 10โปยนโน C
Charge of a proton/electron
G
Gravitational constant
6.674 ร— 10โปยนยน N mยฒ/kgยฒ
Newton's law of gravitation
kB
Boltzmann constant
1.381 ร— 10โปยฒยณ J/K
Statistical mechanics, gas laws
NA
Avogadro's number
6.022 ร— 10ยฒยณ /mol
Links atomic to macroscopic scale
mโ‚‘
Electron mass
9.109 ร— 10โปยณยน kg
Atomic physics, QM
mp
Proton mass
1.673 ร— 10โปยฒโท kg
Nuclear physics, QM
ฮตโ‚€
Permittivity of vacuum
8.854 ร— 10โปยนยฒ F/m
Electrostatics, Maxwell's equations
ฮผโ‚€
Permeability of vacuum
4ฯ€ ร— 10โปโท H/m
Magnetism, Maxwell's equations
โ„
Reduced Planck const.
1.055 ร— 10โปยณโด Jยทs
Quantum mechanics: โ„ = h/2ฯ€
g
Standard gravity (Earth)
9.807 m/sยฒ
Mechanics, weight = mg

Physics meets nuclear science

Nuclear physics is the bridge between PhysicsHub and NexoHub. From radioactive decay to reactor physics to the binding energy curve - it's all here.

โ˜ข๏ธ Nuclear Physics โ†’ โš—๏ธ Nuclear Elements ๐Ÿงฌ Half-Life Lab