Aliens

La interacción electromagnética es responsable de la propia constitución de la materia y de hechos tan cotidianos como usar un electrodoméstico o hablar por teléfono móvil. Son muchos los profesionales que en mayor o menor medida necesitan conocimientos del campo electromagnético, desde un astrónomo hasta un ingeniero industrial, pasando por los especialistas en áreas tan diferentes como telecomunicaciones, elecrónica, óptica, producción de energía eléctrica, pruebas de diagnóstico médico y bioquímica. En la primera parte del libro se sigue de una forma casi cronológica los...

This book is a Spanish translation of Faecal Sludge Management: Systems Approach for Implementation and Operation It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized...

Ciencia basica, ciencia aplicada y tecnica; La investigacion cientifica; El caracter sistemico del desarrollo cientifico.

Everyone has questions about our universe: How hot is Venus? Can you distinguish between a pulsar and a quasar? Is there a universe or a multiverse? Where do we fit into the infinitely grand scheme of things? How do we map the Cosmic Microwave Background? Most tantalizing of all: Is there anyone out there? This small volume encapsulates the terrifying hugeness of the cosmos into bite-sized particles that mere earthlings can understand. It takes you on a cosmic tour, shedding light on the most awesome of objects and places and explaining some very big ideas, concepts, and discoveries. It also...