Una investigación ha encontrado que un pigmento de color desarrollado por los antiguos egipcios hace miles de años puede tener una aplicación extremadamente beneficiosa en la actualidad.En un artículo publicado por The Journal of Applied Physics, un equipo dirigido por investigadores del Laboratorio Nacional Lawrence Berkeley del Departamento de Energía descubrió que el pigmento, conocido como azul egipcio, es 10 veces más fluorescente de lo que se pensaba anteriormente.
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Es un pelín sensacionalista.
High quantum yield of the Egyptian blue family of infrared phosphors (MCuSi4O10, M = Ca, Sr, Ba) https://aip.scitation.org/doi/10.1063/1.5019808
El artículo original dice: The alkaline earth copper tetra-silicates, blue pigments, are interesting infrared phosphors. The Ca, Sr, and Ba variants fluoresce in the near-infrared (NIR) at 909, 914, and 948 nm, respectively, with spectral widths on the order of 120 nm. The highest quantum yield ϕ reported thus far is ca. 10%. We use temperature measurements in sunlight to determine this parameter. The yield depends on the pigment loading (mass per unit area) ω with values approaching 100% as ω → 0 for the Ca and Sr variants. Although maximum quantum yield occurs near ω = 0, maximum fluorescence occurs near ω = 70 g m−2, at which ϕ = 0.7. The better samples show fluorescence decay times in the range of 130 to 160 μs. The absorbing impurity CuO is often present. Good phosphor performance requires long fluorescence decay times and very low levels of parasitic absorption. The strong fluorescence enhances prospects for energy applications such as cooling of sunlit surfaces (to reduce air conditioning requirements) and luminescent solar concentrators. Es decir que puede mitigar el calor en grandes centros urbanos.
https://phys.org/news/2018-10-ancient-pigment-boost-energy-efficiency.html
Reflective roofs and walls can cool buildings and cars. This would mitigate the urban heat island effect and reduce the need for air conditioning, which uses large amounts of energy and thus contributes to the burning of fossil fuels—a driver of global warming. By reflecting the sun’s rays back to space, these cool materials also release less heat into the atmosphere, thus helping to cool the planet and offset some of the effects of warming.
#3 eso te parece porque no tienes la mente "lo suficientemente abierta"
Cuando se enteren Endesa e Iberdrola, sabotearán las investigaciones.
No será pigmento de grafeno.
Ahora entiendo cómo las pirámides se cargaban de electricidad para enviar naves al espacio.
Erich von Däniken seal of approval