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2.Future Travel:Teleportation Science has changed the way we live and the way we think.New inventions and discoveries have made it possible for us to think about the world in new ways.The means of transportation—bikes,cars,airplanes—we use today are good examples.They are based on the idea that transportation means moving something from one place to another—on a bike,in a car or by plane.This takes time,of course,and we can only travel as fast as the laws of physics allow.It will be difficult to travel much faster than today’s airplanes and to travel very far,such as to the stars or to other planets. Now,scientists believe that we might be able to send things from one place to another without actually moving them through space.This sounds strange,but a new way of transportation may become possible in the future. Teleportation is a combination of sending information through telephones or the Internet and transportation.With normal transportation,for example by car or plane,a person or thing is moved from point A to point B.With teleportation,a person or thing is taken apart at point A and put together again at point B.If teleportation becomes possible,we may be able to travel faster and farther than we could ever imagine. In the 1990s,scientists discovered that teleportation was possible.Experiments showed that teleportation could be done,but the thing being teleported was destroyed on the way.So far,scientists have only been able to teleport photons—particles(粒子) hat carry light—and laser beams(激光).What about teleportation of human beings?Teleporting a human being would be very difficult since there are so many parts in a human body.Even the smallest mistake could cause serious problems with the person’s mind or body. There is still a long way from being able to use teleportation to move human beings,but what we used to think was impossible does now seem possible.What we know and what we imagine often work together:the more we know,the more we can imagine,and the more we imagine,the more we can learn.Science is the tool that we use to make our dreams become real and to build a new world with our ideas. (责任编辑：admin) |