La gravedad cuántica

Física general, en su cuarta edición, es una obra clásica para la enseñanza de la materia a nivel medio superior, la cual se le dio un actual y moderno diseño a todo color, con nuevos problemas, fotografías e ilustraciones. Con la intención de indicar y definir cada tema expuesto, ya sea magnitud, intensidad o modelos de magnitudes físicas vectoriales, se dio mayor énfasis en cada una de las definiciones; aunado a ello, se agregaron ejercicios de autoevaluación y se actualizaron algunos de ellos así como figuras. Es un libro único que privilegia la comprensión de los conceptos,...

Presented as a catalogue, the authors provide complete and true information about endangered Mexican Freshwater fishes. A physical and ethological description, the reason of its involvement in the book, preservation state, natural history and ecology, as well as a map with its geographical location in Mexico, and a picture of the specie is provided for each fish. This book is a start point for the knowledge and preservation of the richness of this biological group.

Behind the appearance of an innovative vaccine there is a history of determination and struggle, of breaking established models, and of overcoming the mistrust that generates a new theory. In this book we are going to learn about those stories, the stories of great scientists who fought to prove new theories and are now behind vaccines that save or will save millions of lives. We will experience with them the moment when they discovered that they had defeated a virus. We will travel inside the infectious agents to learn about their ability to gain ground in humans, the biological tools they...

Una ley no puede tratar a las personas como si fueran simples objetos. Y eso es lo que ocurre al generar un ́bebé medicina ́. Este libro te ayudará a profundizar y comprender algunos de estos conceptos.