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It is in fact the best radiator.
Dull black is the best absorber and emitter. Then shiny black, followed by white, then silver.
While the best reflector goes the other way around (silver's the best, then white, followed by shiny black, then dull black)
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How does the heat energy get from the hot water to the outside of the radiator?
Heat energy is transferred from the hot water inside the radiator to the outside through a process called convection. As the water inside the radiator heats up, it warms the metal walls of the radiator. The heat is then transferred to the surrounding air through convection, where the warm air rises and circulates around the room.
In general good absorbers of electromagnetic radiation are also good?
Yes, Good absorber of heat are good emitters of heat. And in both the way rate is same. This is Kirchoff's Law.
How is heat transferred through a radiator?
Heat is transferred through a radiator primarily by convection. As hot water or steam flows through the radiator, it warms the metal fins of the radiator. The warm metal then heats the surrounding air, which rises and creates a convection current, transferring heat into the room.
Why do you blacken the outer surface of a solar cooker?
It is because black colour is a good absorber of heat
What material has good heat conductivity but will not cause condensation of water over its surface?
(maybe).. the alumina-balls, Al2O3
Is dull black surface is a good radiator of heat?
A dull black surface is a good radiator of heat because it has a high emissivity, which means it can efficiently emit thermal radiation. This is why black surfaces are commonly used for radiators and heat exchangers to improve heat transfer.
What is the difference between a good radiator of heat and a good reflector of heat?
A good radiator of heat can absorb and release heat effectively, while a good reflector of heat can bounce heat off its surface. Radiators are designed to dissipate heat, while reflectors redirect heat away from a surface.
Why are the inner surface of a solar cooker painted black?
for it to absorb heat because dull colors are good absorbers of heat
Is shiny silvered surface is a good radiator of heat?
Yes, a shiny silver surface is a good radiator of heat because it has high reflectivity, which means it can reflect thermal radiation effectively. However, the ability to radiate heat also depends on factors such as surface area and the surrounding environment.
Is white surface good radiator of heat?
No, white surfaces are not good radiators of heat. White surfaces are better at reflecting sunlight and heat, which is why they are often used in hot climates to keep buildings cool. Dark surfaces, on the other hand, absorb and radiate heat more effectively.
Which is the best absorber of inferared radiation heat a dull surface or a shiny one?
A dull surface is a better absorber of infrared radiation heat compared to a shiny surface. The rough texture of a dull surface allows for more absorption of infrared radiation, while a shiny surface reflects much of the radiation.
What surface are bad radiator of heat?
white
Is the earth a good absorber and good radiator of heat?
Yes, the Earth is a good absorber of heat, with its atmosphere and surface absorbing solar radiation. It also radiates heat back into space in the form of infrared radiation, making it a good radiator of heat. This process is essential for maintaining Earth's energy balance and regulating its temperature.
Is green coloured surface good radiator of heat?
Green surfaces are not inherently good radiators of heat. The ability of a surface to radiate heat depends on factors such as its material, texture, and emissivity. Green surfaces may absorb and retain heat differently depending on these factors.
Is dull black a good emitter?
No, dull black is not a good emitter of heat. Black objects typically absorb heat well but do not emit it efficiently. Shiny or polished surfaces are better at emitting heat than dull or matte ones.
Why are dull black surfaces considered good emitters or absorbers?
Dull black surfaces are considered good emitters or absorbers because they have a high emissivity, which means they can both absorb and emit radiation efficiently. The rough surface of a dull black object traps more light and heat than a smooth surface, allowing for efficient absorption and emission of energy.
Why does shiny teapot hotter than dull brown teapot?
A shiny teapot reflects more heat back into itself due to its smooth surface, while a dull teapot absorbs more heat due to its rough surface. This means the shiny teapot retains heat better and stays hotter compared to the dull teapot.
