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What else can I help you with?
Would you expect a dull or shiny surface to be a better absorber?
A dull surface would be a better absorber of light because its rough texture allows for greater light absorption due to increased surface area and multiple reflections within the material. Shiny surfaces reflect more light and are therefore poorer absorbers.
What happens to infrared radiation when it reaches a shiny surface?
When infrared radiation reaches a shiny surface, such as a mirror or polished metal, it is mostly reflected back rather than absorbed. Shiny surfaces have high reflectivity, which means they can bounce back a significant amount of infrared radiation. This property of shiny surfaces is why they are often used in applications like solar reflectors to maximize heat reflection.
What can a shiny or light coloured surface do to heat radiation?
A shiny or light-colored surface can reflect heat radiation away, which can help to reduce the amount of heat absorbed by the surface. This can help keep the surface cooler compared to a darker or dull surface, which tends to absorb more heat.
Which mode of heat transfer is thwarted by the shiny surface in a thermos flask?
Radiation is the mode of heat transfer that is thwarted by the shiny surface in a thermos flask. The shiny surface reflects the radiant heat, preventing it from escaping the flask and helping to maintain the temperature of the contents inside for longer periods of time.
Why does a good absorber of radiant energy appear black?
In short, because they "don't reflect'." A matte surface isn't smooth; it has a surface that does not fully reflect light/radiation; the surface looks dull because there's little reflection. A smooth surface will reflect because it's smooth (glass-like) and will reflect or bounce light away from its surface. The surface looks shiny because of the reflection. The color of the surface matters because the darker the color, the more light/radiation is absorbed. Lighter colors reflect light; darker colors absorb light.
Would you expect a dull or shiny surface to be a better absorber?
A dull surface would be a better absorber of light because its rough texture allows for greater light absorption due to increased surface area and multiple reflections within the material. Shiny surfaces reflect more light and are therefore poorer absorbers.
What surface emits more radiation white shiny or silver shiny?
silver shiny
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.
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 is the best reflector of radiation?
A smooth, shiny surface such as a mirror is the best reflector of radiation as it can bounce light rays off it without absorbing or scattering them. Rough or dark surfaces tend to absorb more radiation than they reflect.
What happens to infrared radiation when it reaches a shiny surface?
When infrared radiation reaches a shiny surface, such as a mirror or polished metal, it is mostly reflected back rather than absorbed. Shiny surfaces have high reflectivity, which means they can bounce back a significant amount of infrared radiation. This property of shiny surfaces is why they are often used in applications like solar reflectors to maximize heat reflection.
What can a shiny or light coloured surface do to heat radiation?
A shiny or light-colored surface can reflect heat radiation away, which can help to reduce the amount of heat absorbed by the surface. This can help keep the surface cooler compared to a darker or dull surface, which tends to absorb more heat.
Which mode of heat transfer is thwarted by the shiny surface in a thermos flask?
Radiation is the mode of heat transfer that is thwarted by the shiny surface in a thermos flask. The shiny surface reflects the radiant heat, preventing it from escaping the flask and helping to maintain the temperature of the contents inside for longer periods of time.
How do you reflect radiation?
For IR, visible, and UV radiation; any shiny surface will do. For acoustic radiation, any massive smooth surface will do. For em radiation, any material with a very different dielectric constant from that of air will do. For ionizing radiation, there is a lot of money to be made from this discovery. That problem is yet (mainly) to be solved.
Why does a Matt surface in sunshine get hotter than a shiny surface?
Matt surfaces are better absorbers of thermal radiation than shiny surfaces, as the light "bounces" around on the Matt surface meaning more energy can be absorbed, compared to a shiny surface. A look at a cross section of a Matt surface may be helpful.
Why is the outside of a kettle shiny?
Purely aesthetics these days, to match other kitchenware. Increasingly kettles are made of plastic.
Why does a good absorber of radiant energy appear black?
In short, because they "don't reflect'." A matte surface isn't smooth; it has a surface that does not fully reflect light/radiation; the surface looks dull because there's little reflection. A smooth surface will reflect because it's smooth (glass-like) and will reflect or bounce light away from its surface. The surface looks shiny because of the reflection. The color of the surface matters because the darker the color, the more light/radiation is absorbed. Lighter colors reflect light; darker colors absorb light.
