Jongpil Nam
Railway systems are full of amazing scientific principles and elaborate plans. This book introduces the basic concepts of railways and their systems. And this book will answer most of your questions: ? How does a train overcome centrifugal force at a curve? ? How do vehicle bogies increase passenger’s comfort? ? How does a hybrid vehicle use two energy sources? ? How do some trains go up mountains? ? How does a train transfer to another track? 3
