Phase transitions
In chemistry, thermodynamics, and many other related fields, phase transitions (or phase changes) are the physical processes of transition between a state of a medium, identified by some parameters, and another one, with different values of the parameters. Commonly the term is used to refer to changes among the basic states of matter: solid, liquid, and gas, as well as plasma in rare cases.
4 episodes
Episodes in this category also belong to the following categories:
Higgs Boson
Melvyn Bragg discusses the Higgs Boson; the God particle, which explains how all mass behaves. It is a legend among physicists but does it exist?
18 November 2004
Featuring: Jim Al-Khalili, David Wark, Roger Cashmore
Plasma
Melvyn Bragg and guests discuss plasma. First observed in 1879, plasma is the most abundant matter in the universe, far more than solid, liquid or gas.
13 October 2016
Featuring: Justin Wark, Kate Lancaster, Bill Graham
States of Matter
Melvyn Bragg and guests discuss the science of matter and the states in which it can exist, from solids, liquids and gases to high-energy plasmas.
3 April 2014
Featuring: Andrea Sella, Athene Donald, Justin Wark
Superconductivity
Melvyn Bragg and guests discuss ideas about why some materials lose their electrical resistance at low temperatures and expel their magnetic field and why that matters.
26 January 2023
Featuring: Nigel Hussey, Suchitra Sebastian, Stephen Blundell