ANSWERS: 9
  • Close your eyes....and dream about the past...and wonder about the future...that is the closest you'll get to being able to traverse time....
  • Yes. A clock/watch.
  • No, not yet. Our best understanding of time comes from Einstein's theories of relativity. Prior to these theories, time was widely regarded as absolute and universal, the same for everyone no matter what their physical circumstances were. In his special theory of relativity, Einstein proposed that the measured interval between two events depends on how the observer is moving. Crucially, two observers who move differently will experience different durations between the same two events. The effect is often described using the "twin paradox." Suppose that Sally and Sam are twins. Sally boards a rocket ship and travels at high speed to a nearby star, turns around and flies back to Earth, while Sam stays at home. For Sally the duration of the journey might be, say, one year, but when she returns and steps out of the spaceship, she finds that 10 years have elapsed on Earth. Her brother is now nine years older than she is. Sally and Sam are no longer the same age, despite the fact that they were born on the same day. This example illustrates a limited type of time travel. In effect, Sally has leaped nine years into Earth's future. Jet Lag The effect, known as time dilation, occurs whenever two observers move relative to each other. In daily life we don't notice weird time warps, because the effect becomes dramatic only when the motion occurs at close to the speed of light. Even at aircraft speeds, the time dilation in a typical journey amounts to just a few nanoseconds--hardly an adventure of Wellsian proportions. Nevertheless, atomic clocks are accurate enough to record the shift and confirm that time really is stretched by motion. So travel into the future is a proved fact, even if it has so far been in rather unexciting amounts. To observe really dramatic time warps, one has to look beyond the realm of ordinary experience. Subatomic particles can be propelled at nearly the speed of light in large accelerator machines. Some of these particles, such as muons, have a built-in clock because they decay with a definite half-life; in accordance with Einstein's theory, fast-moving muons inside accelerators are observed to decay in slow motion. Some cosmic rays also experience spectacular time warps. These particles move so close to the speed of light that, from their point of view, they cross the galaxy in minutes, even though in Earth's frame of reference they seem to take tens of thousands of years. If time dilation did not occur, those particles would never make it here. Speed is one way to jump ahead in time. Gravity is another. In his general theory of relativity, Einstein predicted that gravity slows time. Clocks run a bit faster in the attic than in the basement, which is closer to the center of Earth and therefore deeper down in a gravitational field. Similarly, clocks run faster in space than on the ground. Once again the effect is minuscule, but it has been directly measured using accurate clocks. Indeed, these time-warping effects have to be taken into account in the Global Positioning System. If they weren't, sailors, taxi drivers and cruise missiles could find themselves many kilometers off course. http://tinyurl.com/117o
  • No. Though, sometimes I wish there was.
  • according to einstien's theory of relativity, the closer you get to the speed of light the slower time moves around you. this is because the speed of light is constant and no matter how fast you are going the speed of light will be the same. e.g 2 people, A and B. A is travelling at half the speed of light, B shines a torch in the same direction as A. A would not see the light go past him at half the speed, he would see it wizz passed him at the full speed of light. the speed of light is constant relative to the speed of the object. if a person was travelling at the speed of light, it wouldn't feel like he was travelling at the speed of light at all, it would look like time is slowing down around him. it is because of this that einstein said that time is not constant. and also that light is a movement of space and time. one scientist who's name escapes me at the moment, is developing the world's first time machine using lasers. it involves reflecting a laser beam in a loop. and because the speed of light is constant, the laser beam would over take itself and therefore go backwards in time. (i haven't quite got my head around this) i hope this makes sense!! it was all off the top of my head from a program i saw on the discovry channel called the world's first time machine.
  • Oh how gorgeous it really is...the water is so clear and the sand so clean! The sand is actually soft...lol Even at waist deep water...you can look down and see your feet! It gets up to near 90 degrees this time of year...and there is always a cool breeze coming off the water..water temp is around 81 degrees right now. Sooo...American Airlines just for your information!
  • only in my dreams.
  • Yes it's called a Rube Goldberg clock.
  • i do believe that the theory exists but not the device. The theory is that if u can find a device that travels faster than the speed of light then u will slightly go back in time, as the time will not elapse

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