El Caribe

Concepto es término latino y está asociado al hecho de engendrar ideas: el ser humano es capaz de formar conceptos. de concebir o crear ideas. Así, el verbo que subyace en el sustantivo concepto es capio, is, que en español dió "capturar". Al formar conceptos, el hombre engendra, captura o concibre ideas: señala límites, marca fronteras y separa un objeto conceptual de otro. Así ha sucedido desde Grecia hasta hoy.

Esta obra ha sido extensamente revisada para uso en los cursos básicos de Termotecnia teórica y práctica. Su ampliación, nuevas materias, diagramas y problemas, constituyen la característica de esta obra de texto tan utilísima y tan empleada. Por otra parte en ella se ha procurado exponer las nuevas materias en forma concisa y fácil de entender, ilustrando con problemas y ejemplos los muchos y recientes adelantos conseguidos con el vapor de agua, aire y centrales térmicas.

Galaxies have a history. This has become clear from recent sky surveys which have shown that distant galaxies, formed early in the life of the Universe, differ from the nearby ones. New observational windows at ultraviolet, infrared and millimetric wavelengths (provided by ROSAT, IRAM, IUE, IRAS, ISO) have revealed that galaxies contain a wealth of components: very hot gas, atomic hydrogen, molecules, dust, dark matter ... A significant advance is expected due to new instruments (VLT, FIRST, XMM) which will allow one to explore the most distant Universe. Three Euroconferences have been...

With a new afterword, Why You Are Here- A speech on the opening of the COP26 climate summit As a young man, I felt I was out there in the wild, experiencing the untouched natural world - but it was an illusion. The tragedy of our time has been happening all around us, barely noticeable from day to day - the loss of our planet's wild places, its biodiversity. I have been witness to this decline. A Life on Our Planet contains my witness statement, and my vision for the future - the story of how we came to make this, our greatest mistake, and how, if we act now, we can yet put it right. We have...