Machine-translated by Google. Questions are authored in English.
Top

Discussion

An infrared thermometer reads a surface temperature that depends on the surface's

  • A.emissivity
  • B.thermal conductivity
  • C.specific heat capacity
  • D.coefficient of expansion

Answer: A

A polished metal surface of low emissivity radiates far less than a matt one at the same temperature, so an uncorrected reading is badly low. Setting the emissivity, or sticking a patch of matt tape on the surface, is what makes the reading trustworthy.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.