But glass can itself radiate quite strongly in the infrared if it becomes as warm as the object it's supposed to hide.
Everything will do that.
Everything will do that.
Not quite. A shiny steel ball bearing heated in a furnace along with a rusty dull ball bearing will barely glow a bit red while the rusty one will be a bright orange.
Not quite.
Yes, quite. Any material heated to the same temperature will look the same in FLIR. You're literally seeing the temperature, so the material is irrelevant.
A shiny steel ball bearing heated in a furnace along with a rusty dull ball bearing will barely glow a bit red while the rusty one will be a bright orange.
That's because it will take the shiny steel ball's surface longer to reach a higher temperature. It's like the difference between holding a match to a 1 kg steel ball and 1 kg of steel wool.
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