SOME SIMPLE BASICS
It is certainly easy to ascertain ‘WHEN IN TIME” it is at any given moment: it’s 3:54pm on Sunday, February 12, 2012. “WHERE” in time his another question. As illustrated by Euclidean geometry there is another dimension in time that could tells us, on a city map for example, the street, the floor and where in the room that particular time exists. So in edition to 3:54pm on Sunday, February 12, 2012 we are on the northeast corner of the 5th floor at 700 13th Street, Washington, DC 2016. USA, Earth. This would be considered precise in most situations.
BUT does anybody really know what time it really is?
As precise as the above example illustrates, we are always seeing into the past due to the time light (photons) takes to travel. Light travels at a speed of 186000 miles a second or 700 million miles an hour. The sunlight which warms your face, departed the surface of the sun eight minutes ago. The photons that left the center of the sun left hundreds of thousand of years ago. Looking into a clear night’s sky the closest of stars are EIGHT to TWENTY MILLION light years away. We see them as they existed eight to twenty million years ago! Some are no longer there. These oldest of galaxies appear to us as they existed THIRTEEN BILLION YEARS AGO. We will spend much more time dissecting this at in a later post.
TIME IS RELATIVE TO THE PERCEIVER
If Angel is standing stationary on the train embankment as the train travels West-to-East, and Buffy is riding in the last row of only car the engine is pulling, and Cruela is in the front row or that car; as the train runs 55 mph Angel will perceive the train pass him at the same 55 mph. Now if our Buffy is standing still she will also perceive the same 55 mph as she looks out the windowing relation to Angel. But in relation to a stationary Cruela, who is also on the train, there is no perceived movement at all.
Now lets change the facts:
- The train travels at 60 mph East
- Buffy runs 3 mph east
- Cruela is sitting stationary
- Angel perceives the train traveling 60 mph west-to-east
- Angel perceives the Buffy traveling 63 mph (60mph + 3mph)
- To Cruela the Buffy is traveling 3 mph east (0 + 3 mph)
Now, can Cruela run 61 mph East relative to Buffy – and why ??