---
tags:
  - science/physics
  - phenomena
  - heat
  - thermodynamics
created: 2026-05-16
breadcrumb: "Physics > Natural phenomena > Heat"
---

# Heat

> **Mechanism:** Energy transfer from random molecular motion

## Items

- **Conduction** — Heat flows through a material by molecular collisions. Fourier's law: q = −k ∇T.
- **Convection** — Heat carried by fluid motion (free or forced).
- **Radiation** — Heat emitted as EM waves. Stefan–Boltzmann: P = εσAT⁴.
- **Specific heat** — Energy required to raise 1 kg of a substance by 1 K. Q = mcΔT.
- **Phase change** — Latent heat absorbed without temperature change during melting / boiling.

## Related

- [[thermodynamics]]
- [[infrared]]