Lee?s Disc Apparatus


Lee’s Disc Apparatus is a scientific instrument used to determine the thermal conductivity of a bad conductor (such as glass, rubber, wood, or plastic). It is widely used in physics and material science laboratories for heat transfer experiments. it is also used to determine thermal conductivity of a bad conductor (glass) in form of a disc using Lee’s method.

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Components of Lee’s Disc Apparatus

  • Brass Discs (Heated and Cooling Discs): Provide thermal contact with the test material.
  • Test Sample (Bad Conductor): The material whose thermal conductivity is to be measured.
  • Heating Element: Supplies heat to the system.
  • Thermometers: Measure temperatures at different points.
  • Insulation Setup: Reduces heat loss for accurate measurement.

Applications:

  • Measuring Thermal Conductivity of non-metallic materials.
  • Studying Heat Transfer in Solids and the effect of material thickness.
  • Validating Fourier’s Law of Heat Conduction.
  • Educational Demonstrations in thermodynamics and material science.
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