Explosions, in a second, maim, destroy and kill.
Everyday someone, somewhere feels the force of impact.
Every time we build something we run the risk that it’ll collapse.
Episode(s) تعداد قسمتها :
01 - EXPLODE
Explosions, in a second, maim, destroy and kill. Scientists test explosives to see how they work and to figure out how to contain them. They urgently seek new ways to protect people & to save innocent lives. First, you have to understand what an explosion does. To begin with, it’s a chemical reaction, and that sets off a violent release of energy, a blast. The blast produces a shock wave that hurtles outwards. It’s this shock wave and flying debris that do dreadful damage to people. In the 1980’s and ’90’s, Americans became targets for terrorist bombs. It began in 1983 in Beirut. First, the U.S. Embassy was flattened by a bomb, killing 63. Next, a truck laden with explosives killed 241 US soldiers. Then the menace attacked Americans at home: The Atlanta Olympics, the World Trade Center, Oklahoma City. Events and places with no obvious connection, but now, all are linked by bombs, violence, and terror.
02 - IMPACT
Everyday someone, somewhere feels the force of impact. When two objects crash into each other, trouble follows. Now science is hitting back, stress testing ways to protect us from the destructive power of impact. Impact is what happens in a collision. Impacts release energy causing objects involved to bend, break or rebound in response - the force has to go somewhere. Today, scientists are trying to control the violent effects of impact, and trying to make the world a safer place.
03 - COLLAPSE
Every time we build something we run the risk that it’ll collapse. When structures collapse, people suffer. Keeping structures up and designing ones that won’t collapse is a constant challenge for architects and engineers because if gravity had its way, everything would just fall down, and, eventually, everything will. Add earthquakes, floods and high winds and the result can be a wave of destruction and death. Engineers struggle to figure out exactly how collapses happen, so they can design structures that offer safety instead of danger.
خريد پستي The Stress Test ,علمی - تخيلی Sci-Fi, فروشگاه فيلم هاي مستند كتابخانه اينترنتي دانش گستران جوان You Research
خريد پستي The Stress Test ,علمی - تخيلی Sci-Fi, فروشگاه فيلم هاي مستند كتابخانه اينترنتي دانش گستران جوان You Research 