Which term denotes the relative ability of a material to transfer heat?

Which term denotes the relative ability of a material to transfer heat?

• A. Grain lines
• B. Thermal conductivity
• C. Habit
• D. Macle

Answer: (B)

Thermal conductivity is the property that describes how easily heat moves through a material when there is a temperature difference. Materials with high thermal conductivity, like metals such as copper, transfer heat quickly, while materials with low thermal conductivity, like wood or plastic, are poor heat conductors and act as insulators. The higher the conductivity, the more efficiently heat flows; it’s measured in watts per meter-kelvin (W/m·K). In diamonds, the thermal conductivity is very high, which is why diamond-based testing devices can distinguish real diamonds from simulants. This concept is the best descriptor for the relative ability of a material to transfer heat.

Thermal conductivity is the property that describes how easily heat moves through a material when there is a temperature difference. Materials with high thermal conductivity, like metals such as copper, transfer heat quickly, while materials with low thermal conductivity, like wood or plastic, are poor heat conductors and act as insulators. The higher the conductivity, the more efficiently heat flows; it’s measured in watts per meter-kelvin (W/m·K). In diamonds, the thermal conductivity is very high, which is why diamond-based testing devices can distinguish real diamonds from simulants. This concept is the best descriptor for the relative ability of a material to transfer heat.