Cryogenics

Producing and studying very low temperatures through gas liquefaction, insulation, compression, and thermodynamic control.

Core metadata

ID: cryogenics
Era: Industrial
First known date: 1898 (exact)
Region: London, United Kingdom
Review status: source_checked
Maturity: N/A

Prerequisites

Dependents

Early Superconductors (superconductors_early)

Fields

None.

Node sources

James Dewar's vacuum flask (Royal Institution, 2026, museum) • Supports: node
Locator: The Royal Institution notes that Dewar became the first person to create liquid hydrogen in 1898.
January 19, 1894: James Dewar produces solid air (American Physical Society, 2012, review) • Supports: node
Locator: APS summarizes Dewar's low-temperature work and notes his successful liquefaction of hydrogen in 1898.

Prerequisite edge evidence

Edge/source evidence summary:

Prerequisite edges: 3
Average edge confidence: 68%
Prerequisite sources: 2
expert_inference: 3

Prerequisite	Type	Confidence	Evidence level	Note	Sources
Thermodynamics (thermodynamics)	enabling	68%	expert_inference	Thermodynamics provides a capability that enables this technology without being the only possible path.	Thermodynamics (Encyclopaedia Britannica, 2026, textbook) • Supports: edge
Mechanical Refrigeration (refrigeration)	enabling	68%	expert_inference	Mechanical Refrigeration provides a capability that enables this technology without being the only possible path.	No sources recorded.
Precision Machine Tools (precision_machine_tools)	enabling	68%	expert_inference	Precision Machine Tools provides a capability that enables this technology without being the only possible path.	Machine Tool (Encyclopaedia Britannica, 2026, textbook) • Supports: edge

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