If we keep a simple aluminium sheet and a black paper under sun the aluminium sheet quickly gets heated upBut the problem is Black paper being black should absorb more radiation and should get heated up more as compared to the metal sheet which is good radiator and therefore appears shiny.
The black paper does get heated up to a higher temperatureWhat you are observing is not what you think you are observingHeat moves rapidly through a metal and it moves slowly through the paperSo when you touch the metal the heat in any part of it rapidly moves through the material and into your bodySo it feels hotWhen you touch the paper only those atoms very close to the surface can give heat to your bodySo there is only a small transfer of heat and you think that the material is not very hotNow try coating the aluminium with a thin black coating ( soot works well) and compare it to a piece of shiny aluminium.
It relies upon on whom you askMy opinion is definite, in spite of the undeniable fact that it has drawbackswould not artwork at night or in undesirable/cloudy climate at the instant high priced and demands alternative each 10-15 years i think of interior the destiny those issues would be actual triumph over, in spite of the undeniable fact that it is going to take 10-15 yearsavailable recommendations to the 1st subject are long distance transmission lines so as that on a similar time because it is cloudy in one place, it is actual no longer in yet another and the flexibility is purely shipped inthis would even entail a international sized ability gridadditionally present producing infrastructure is in all threat sufficient for night use whilst call for is decreaseAs for the high priced/alternative factor, the technologies is increasing exponentially with the fee/overall performance ratio fallingit is slightly diverse than whilst this grow to be first tried interior the 70's whilst textile technology grow to be no longer understood besides because it at the instant isyet another earnings of photograph voltaic is the capacity to decentralize lots of the call forIf human beings would desire to positioned photograph voltaic panels on their rooftops, then a fragment of the flexibility would be generated at abode.
I don't think so because photovoltaic cells produce electricity when they are exposed to lightThey usually consist of panelsThe panels contain two layers of different materialsWhen light hits these two layers, one of the layers becomes positively charged, and the other becomes negatively chargedThis works similarly to a regular flashlight battery, which has a positive end and a negative endWhen a wire connects the two ends, they produce an electric currentWhen the two layers of material in a solar cell are exposed to light, they create an electric currentWith different types of solar cells there is a slight change in efficiency caused by temperature but it is not that significant.
