radiation | physics-tuition-sg

Evan Toh

Oct 301 min read

PP2022P1Q17 Why is the athlete wrapped with silver and white sheet after a run?

We have learned that silver smooth reflective surface is a poor absorber , poor emitter or a good reflector of infra-red radiation. How...

Evan Toh

Oct 301 min read

Worse than black? Japan study on heat-beating shirt colors reveals infrared absorbers – The Mainichi

https://mainichi.jp/english/articles/20230726/p2a/00m/0sc/014000c Dull black is the best absorber and best emitter of infra-red...

Evan Toh

Aug 311 min read

Black is a good emitter of infrared radiation

In theory, we have learned that Dull (matt/rough) and black surface is a good emitter and good absorber of infrared radiation . In...

Evan Toh

Aug 311 min read

Radiometer – Thermal Transfer

adiometer is a device for measuring the amount of infrared radiation. It consists of freely pivoted rotor with four vanes perpendicular...