SC-1442
Radiation
Lower Sec Science · Secondary 2 · Medium · Radiation
A shiny metal heat sink is painted matt black. How does this change help it lose heat faster by radiation?
Use the concept of heat transfer by radiation.
Use the concept of heat transfer by radiation.
- Matt black surfaces emit heat radiation better, so more heat is lost each second.
- Matt black surfaces reflect more heat back to the heat sink.
- Matt black surfaces stop radiation, so the heat sink stays cooler.
- Matt black surfaces absorb all heat and prevent it from leaving.
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