By Lewis Dartnell

«Una mirada fascinante a los principios básicos de las principales tecnologías que sostienen l. a. sociedad contemporánea». Wall highway magazine Una pandemia incontrolable, el impacto de un meteorito, o quizá una guerra nuclear; por el motivo que sea, el mundo que conocemos ha desaparecido y los escasos supervivientes deben comenzar de cero. ¿Cuáles son los conocimientos fundamentales necesarios para reconstruir nuestra civilización? Tras recoger lo poco lo poco que queda, ¿cómo se puede empezar a producir lo esencial? ¿Cómo cultivar alimentos, generar electricidad, preparar medicinas o extraer steel de las rocas? ¿Se puede evitar una nueva edad oscura y aprovechar los atajos para conseguir de nuevo el desarrollo? l. a. vida en las sociedades contemporáneas nos han desconectado de los procesos básicos que nos sostienen, así como de las elegantes premisas científicas que permiten aprender las cosas por uno mismo. Abrir en caso de apocalipsis es un viaje de exploración, un libro que explica todo lo que hay que saber acerca de todo lo que nos rodea. Una guía rápida para reiniciar l. a. civilización que transformará nuestra comprensión del mundo, y nos ayudará cuando este ya no exista. l. a. crítica ha dicho... «Un maravilloso compendio de los conocimientos que hemos olvidado. El libro más inspirador que he leído en mucho tiempo». Peter Forbes, self reliant «Un libro extraordinario, una lectura estupenda incluso si l. a. civilización no desaparece. Si lo hace, será l. a. biblia del nuevo mundo, y Dartnell su profeta». the days «Una fascinante historia de l. a. ciencia y los angeles tecnología». Steven Poole, The dad or mum

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The use of synthetic adhesives in the manufacture of goods ranging from wooden furniture to the stressed components of aircraft. • The stitching together of clothing. • The soldering of electronic components to the printed circuit boards in products such as computers and television sets. 36 Basic Manufacturing Packaging of finished products has become an important part of the marketing process. The requirements of packaging are: To protect the goods from damage in transit. To protect the goods from contamination.

32 Small batch and jobbing product groups. • Economical loading of the plant and personnel is difficult. • Often, only outline specifications are provided, therefore design facili- ties are required. Some typical products produced on a small batch or a jobbing basis are as shown in Fig. 32. 4 Production systems Finally, it must be remembered that all production systems have a single aim, to convert raw materials into a finished product that can be sold at a profit. The inputs and outcomes of a typical manufacturing system are shown in Fig.

5 kg of compressed yeast to make a batch of the basic dough. 3 Processing The above ingredients are kneaded into a dough by machinery and various other ingredients such as fat, milk powder and sugar are added according to the type of bread being made. The dough is then allowed to stand and ferment for several hours, after which it is automatically divided up and machine moulded to shape before it is baked for approximately three quarters of an hour at a temperature of 230°C. The bread is then allowed to cool.

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