Jump to latest postCan someone help me with this one:
An object that is a good reflector is also a:?
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Junior Member
Posted May 10, 2021
Can someone help me with this one:
An object that is a good reflector is also a:?
Junior Member
Posted May 11, 2021
Pro Subscriber
Good emitterOriginally Posted by jamescrosetto
Member
Posted May 27, 2021
According to the test, it is actually poor emitter.
Seasoned Member
Posted June 5, 2021
High reflectivity equals low emissivity. I believe the test answer is correct.
Source: ITC fundamentals of thermal science book.
NETA Level III
Posted June 13, 2021
Pro Subscriber
Correct, highly reflective objects do not emit thermal radiation very well. They reflect infrared light just like visible light so you can easily get false readings, this is why a shiny lug can sometimes look hotter than cable insulation because you are seeing the reflection of other heat sources on the lug. The dull, non-reflective insulation is the more true reading. Bus bar is another good example if you've seen the difference in scanning insulated vs. non-insulated LV gear. You can often times see you own body heat if you stand directly in front of a shiny object you are inspecting. With that said, its still possible to see loose connections on shiny bus, it just takes some adjusting.
