Have you ever wondered what’s inside the machines you use so often in your daily life? How does a hand-held leaf blower whip up hurricane-force winds? What makes a mechanical watch tick – without a battery? And how does an escalator haul hundreds of people up an incline as steep as mount Fuji?
Беше на каналите:
Анатомија на падот 
Казино Ројал 
Наше маало 
Телефонска говорница