Ciencia-Física

Dicen los ancianos del lugar que es mejor no apagar nunca la calefacción aunque no estemos en casa ya que si dejo que la vivienda se enfríe, luego gasto más calentandola de nuevo.

The future of winter clothes has arrived, and it’s even better than wrapping yourself in an electric blanket until spring. Researchers have created a new cloth that warms up with just a bit of electricity and traps body heat more efficiently than standard cotton fabric. The scientists dipped ordinary cotton cloth in a solution of silver nanowire particles, which form a conductive network embedded in the cloth. By varying the concentration of the solution, the researchers were able to control the particles’ spacing in the network, ultimately finding the sweet spot where the fabric trapped close to 80% of the heat our bodies radiate while still allowing water molecules to pass through, they will report this month in Nano Letters. T

Estoy seguro de que alguna vez has notado sensación de frío en algún lugar y te has sorprendido al mirar el termómetro: ¿19ºC? juraría que estábamos a 14ºC.