why black color is the best absorber of heat? where can i know more about the solar cooker?

Answer 1

lets get to the basic of absorption and reflection and colours..
leaf looks green because it reflects the green part of light spectrum, rose looks red because it reflects the red part of the light spectrum and so on. white light is a combination of red, orange,yellow, green, blue, indigo and violet colour spectra. so, all objects that look white when they reflect all these colours, that is, all the light that falls on the object is reflected back..

thus, a black object absorbs all the light or atleast, almost all the light that falls on it.. so, more the light, more the heat!

Answer 2

black absorbs light,
black wire doesn't get hotter than white wire when left in the dark with an electric current passes through. color has little to do with heat except that black absorbs light and thus gets hot when out in the sun

the best absorbers of heat are things like water that can absorbe a lot of heat per unit mass (so it absorbes and stores a lot of heat energy)
or alternatively
the best conductors of heat are metals (so they absorb large amounts of heat energy and expell it quickly too)

to find out more about solar cookers check out wikipedia
http://en.wikipedia.org/wiki/Solar_cooker

for the guy that says heat and light are similar waves, um no, heat is in simplistic terms vibration or motion on the atomic level, or how excited the atoms are, light is both a particle and a wave.

heat doesn't travel through a vaccum, but like does, heat needs a medium to transfer through

Answer 3

Light & Heat are similar waves. All surfaces reflect as well as absorb these waves, but the extent depends upon the "wavelength" (or ranges therof) that differs by color (also the smoothness of the surface) . Black & White are opposite ends of the spectrum & Black being the densest composite of all all known colors absorbs most ranges of wavelength & reflects the least

For Solar cooking please visit
http://solarcooking.org/

Answer 4

black color is the best conductor of heat because it absorb the heat.solar cooker is a device which hepls in making food in the presence of sunlight.it consists one reflector"(plane miror) on which the rays of sunlight falls and divert to the container of the food which is placed inside a metal container which is painted black from outside .as black is the good conductor of heat it does not allow the heat trapped by the glass lid which is put over the metal container,to go outside .due to this the container
becomes hot and the food is being ready to eat but it is not for frying purpose.

Answer 5

Black looks black because it doesn't reflect as much of the light that hits it. It absorbs most of the light, meaning that it absorbs most of the energy associated with the light. That's why it gets hot sooner than any other color.

Answer 6

black absorbs all frequencies of light, so black things also take the heat along with the light. white, on the other hand, absorbs none and keeps things cooler

Answer 7

what? is this a extreme question? i'm hoping no longer. it is not inconvenient except you spend sunny days strolling barefoot on "d black colored street". and guy made ingredients could be a waste of money and time considering the fact that asphalt works merely effective and is affordable AND effective.

Answer 8

try searching in www.howstuffworks.com.