Recent content by ishag

Will the visible light heat the atmosphere? I think it would. after all, its energy. The photons absorbed by molecules in the atmosphere are converted into thermal motion. Would you be able to see a vast white sunlit roof from a long way up? How come? White reflects all the wavelengths in the...

I am sorry, I didn't understand your question. I have this doubt because I have read that usage of cool roofs including white painted roofs will help in decreasing urban heat island effect. Cool roofs have high solar reflectance and thermal emittance. The reflected and emitted radiation are...

The reflected light from white roof can interact with gas and vapour molecules in the atmosphere and re-emit the radiation. Even though we are using white paint to reduce the temperature inside the building, it will eventually result in an increase in the atmospheric temperature. Is this correct?

Homework Statement "The urban heat island (UHI) effect refers to the phenomenon of a metropolitan or built up area which is significantly warmer than its surrounding areas." Using white paint in roofs increases the solar reflectance and decrease the thermal intake into a building. Question:-...