thermal conductivity

thermal conductivity

A scientist measures the thermal conductivity of a copper rod.

Definition
  1. Noun:
    • Physical property: "Thermal conductivity" is a measure of a material's ability to conduct heat. It quantifies how easily heat flows through a substance when there is a temperature difference.
Usage Examples
  • Noun:
    • Copper has high thermal conductivity, making it ideal for cooking pots. (Copper conducts heat well.)
    • The thermal conductivity of wood is low, so it feels warm to the touch. (Wood does not transfer heat easily.)
Advanced Usage

  • "Thermal conductivity coefficient": A specific numerical value representing the rate of heat transfer through a material.

    • The thermal conductivity coefficient of silver is about 430 W/m·K. (A precise measurement of heat conduction.)

  • "Effective thermal conductivity": The overall heat transfer ability of a composite material or system, accounting for multiple pathways.

    • The effective thermal conductivity of the insulation layer was calculated to be 0.05 W/m·K. (The combined heat transfer property of the insulating material.)
Variants and Related Words

  • Thermal (adj): relating to heat.

    • The thermal properties of the metal were tested. (Properties concerning heat.)

  • Conductivity (n): the ability of a material to transmit energy (heat, electricity, sound, etc.).

    • Electrical conductivity is different from thermal conductivity. (The ability to transmit electricity.)

  • Conductor (n): a material that allows heat or electricity to flow through it easily.

    • Metals are good conductors of heat. (Materials with high thermal conductivity.)
Synonyms
  • Heat conductivity: an alternative term for thermal conductivity.
  • Thermal conductance: often used interchangeably, though technically it refers to the rate of heat transfer per unit temperature difference.
Related Idioms

  • "Conduct heat like a metal": a comparison used to describe very high thermal conductivity.

    • This new alloy conducts heat like a metal, despite being lightweight. (It has very high thermal conductivity.)

  • "Poor conductor of heat": a phrase used to describe materials with low thermal conductivity.

    • Air is a poor conductor of heat, which is why it is used in insulation. (Air has low thermal conductivity.)