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Do dull silver surfaces emit the same amount of radiation as shiny white surfaces?
Wiki User
∙ 12y ago
Dull silver surfaces and shiny white surfaces can have different emissivity values, which means they might not emit the same amount of thermal radiation.
Emissivity is a property that quantifies how effectively an object emits thermal radiation compared to a perfect blackbody at the same temperature. A blackbody has an emissivity of 1, and objects with emissivity closer to 1 are better emitters of thermal radiation.
Dull surfaces, including dull silver surfaces, typically have higher emissivity compared to shiny surfaces. Shiny surfaces often have lower emissivity because their smooth and reflective nature reduces their ability to emit thermal radiation effectively.
White surfaces can vary in terms of their shininess and emissivity. A shiny white surface might have a lower emissivity, while a more matte or dull white surface may have a higher emissivity.
Therefore, if the dull silver surface has a higher emissivity compared to the shiny white surface, it will emit more thermal radiation than the shiny white surface at the same temperature. However, it's important to note that the exact emissivity values can vary based on the specific properties and conditions of the surfaces, so it's best to refer to specific emissivity measurements for accurate comparisons.
akram khan
Wiki User
∙ 12y agoshiny surface relfects the heat rays they dont emit
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What type of surfaces are good radiators of heat?
Dull black surfaces they are also best at absorbing it as well. [Shiny and silvery or white surfaces are poor radiators and absorbers of heat. However they are very good in reflecting heat radiation.]
Why is the back of an electric fire shiny?
Probably so science teachers can ask the question - the answer to which is that shiny surfaces are poor emitters of infra red radiation, thus minimising heat loss from the kettle and improving the rate of heat at which it heats the water for your cup of tea ( in the UK) or coffee (U.S)
Why does an electric toaster has a shiny surface between the heating elements and the outer case?
Because shiny surfaces are poor emitters of radiation and therefore, no heat will be lost to the surroundings, just reflected off the shiny surface back to the toast.
What are the best absorbers of thermal radiation?
Black, dull surfaces are the best absorbers of thermal radiation because the heat doesn't reflect off it unlike shiny surfaces.
Why does light reflect best on flat and shiny surfaces?
because the light bounces off the flat and shiny surfaces.
Which emits the most infra red radiation matte silver surface or shiny black surface?
Matte (dull) and black surfaces emit infrared radiation at a faster rate than shiny and white surfaces.
What surface emits more radiation white shiny or silver shiny?
silver shiny
What surface is the best reflector of radiation?
Light, shiny surfaces are the best reflectors of radiation
Why does something shiny stop heat radiation?
Types of light energy are reflected off of shiny surfaces back into the atmosphere. Other surfaces, such as darker ones, absorb the light energy and heat up much quicker.
What type of surfaces are good radiators of heat?
Dull black surfaces they are also best at absorbing it as well. [Shiny and silvery or white surfaces are poor radiators and absorbers of heat. However they are very good in reflecting heat radiation.]
How does the type of surface affect heating by radiation?
Dark matt surfaces absorb radiated heat much more easily than light-coloured shiny surfaces.
What type of surfaces reflect thermal radiation?
First of all this is a physics question, not a chemistry question. Silvery surfaces are very good at reflecting heat radiation, dark/dull surfaces attract and absorb heat radiation.
Why is the back of an electric fire shiny?
Probably so science teachers can ask the question - the answer to which is that shiny surfaces are poor emitters of infra red radiation, thus minimising heat loss from the kettle and improving the rate of heat at which it heats the water for your cup of tea ( in the UK) or coffee (U.S)
Why does an electric toaster has a shiny surface between the heating elements and the outer case?
Because shiny surfaces are poor emitters of radiation and therefore, no heat will be lost to the surroundings, just reflected off the shiny surface back to the toast.
What are the best absorbers of thermal radiation?
Black, dull surfaces are the best absorbers of thermal radiation because the heat doesn't reflect off it unlike shiny surfaces.
Why is a petrol tanks painted silver?
This is bcoz the fuel inside is highly flammable and shiny white or silvery surface help to keep it cool and prevent it to blow everything around in tiny chunks :) As such surfaces reflect radiation and are a bad absorber of heat.
Is silver shiny?
Yes silver is shiny.
