Shiny
Dull surface is a better absorber. A shiny surface would better reflect than absorb.
its simple the things when placed in light shine or glitter like steel,polished metals etc. are shiny things and the things that don't glitter even in light like wood and non metals are dull substances.
A dull surface will absorb infrared best, but it needs to be dull at infrared wavelengths. Do not judge the infrared behavior by the visible performance.
Dark objects absorb heat, while bright shiny ones reflect heat back.
dull
Shiny
dull
dull
dull
dull
shiny
Shiny.
It is shiny.
It is shiny.
Shiny
Shiny