Il grande libro dei sottomarini

Exploring the depths is a difficult and dangerous business: there’s no oxygen underwater, little light, and as you go down to the depths the temperature falls, while the pressure increases drastically!It took centuries to design the first safe and reliable submarines: military models as well as civilian and touristic ones, for exploration and rescue. Filippo and Sofia discover this mysterious world, guided by their grandpa, anex-submariner who tells them tales of adventures linked to the history of submarines, revealing the more complex technical aspects – such as why they don’t float (and, above all, sink) – as well as more curious ones: where’s thebathroom? And who cooks?• Each tale introduces a technical chapter, with the support of infographics and boxes with details. A journey of discovery of all aspects of submarines, from the science of how they work to the technology of their systems and structures.• Four simple experiments help the readers to better understand the most difficult aspects.• Attractive and engaging illustrations.