Entropy
A measure of disorder or randomness in a system.
Definition
Entropy is a thermodynamic quantity representing the degree of disorder or randomness within a system. According to the Second Law of Thermodynamics, the total entropy of an isolated system never decreases over time; it tends to increase, driving systems toward equilibrium. Entropy has profound implications in information theory, biology, and cosmology.
Example
“When an ice cube melts in a glass of warm water, entropy increases as the orderly crystalline structure of ice breaks down into randomly moving liquid water molecules.”
Usage Examples
- 1
“The team applied entropy best practices to improve their physics outcomes significantly.”
- 2
“Understanding entropy is essential for anyone building a career in STEM.”
When & How to Use
Use 'Entropy' when working in Physics contexts where entropy is a thermodynamic quantity representing the degree of disorder or randomness within a system.
- ▸Applying entropy principles during a physics project or initiative
- ▸Explaining entropy to a junior team member or stakeholder unfamiliar with STEM
- ▸Evaluating options or proposals using entropy as a decision-making criterion
Etymology & Origin
The term 'Entropy' derives from professional usage and entered STEM professional usage as the field formalised in the 20th century.
History & Evolution
The concept of entropy has evolved alongside STEM. Early practitioners relied on informal methods; structured approaches emerged with the professionalisation of physics in the mid-20th century. Today, entropy is a standard part of STEM practice globally.
Synonyms
- disorder measure
- thermodynamic entropy
- information entropy
Antonyms / Opposites
- order
- low entropy
Images
CC-licensed · free to useVideo
Related Terms
- Thermodynamics
- Second Law of Thermodynamics
- Gibbs Free Energy
- Heat Transfer