Thoery of speed of light affecting time?

Question

I cannot grasp the concept of speed and time being relative to each other. Can anyone explain to me why exceeding the speed of light would make you move back in time? This theory seems wrong to me, someone please enlighten me.

Answer 1

Time dilation is the phenomenon whereby an observer finds that another's clock which is physically identical to their own is ticking at a slower rate as measured by their own clock. This is often taken to mean that time has "slowed down" for the other clock, but that is only true in the context of the observer's frame of reference. Locally, time is always passing at the same rate. The time dilation phenomenon applies to any process that manifests change over time.

In Albert Einstein's theories of relativity time dilation is manifested in two circumstances:

In special relativity, clocks that are moving with respect to an inertial system of observation (the putatively stationary observer) are found to be running slower. This effect is described precisely by the Lorentz transformations.
In general relativity, clocks at lower potentials in a gravitational field — such as in close proximity to a planet — are found to be running slower. This gravitational time dilation is only briefly mentioned in this article but is described elsewhere (see also gravitational red shift).
In special relativity, the time dilation effect is reciprocal: as observed from the point of view of any two clocks which are in motion with respect to each other, it will be the other party's clocks that is time dilated. (This presumes that the relative motion of both parties is uniform; that is, they do not accelerate with respect to one another during the course of the observations.)

In contrast, gravitational time dilation (as treated in General Relativity) is not reciprocal: an observer at the top of a tower will observe that clocks at ground level tick slower, and observers on the ground will agree. Thus gravitational time dilation is agreed upon by all stationary observers, independent of their altitude.

Thus the duration of the clock cycle of a moving clock is found to be increased: it is "running slow." As indicated, the Lorentz transforms can be used for more general cases.

As shown, the effect increases in an exponential manner with respect to relative speed or gravitational differences. The range of such variances in ordinary life, even considering space travel, are not great enough to produce easily detectable time dilation effects, and such vanishingly small effects can be safely ignored. It is only when an object approaches speeds on the order of 30,000 km/s (1/10 of the speed of light), or lies deep within the gravitational "well" of massive stellar objects, that it becomes important.

Time dilation by the Lorentz factor was predicted by Joseph Larmor (1897), at least for electrons orbiting a nucleus. Thus "... individual electrons describe corresponding parts of their orbits in times shorter for the [rest] system in the ratio :" (Larmor 1897). Time dilation of magnitude corresponding to this (Lorentz) factor has been experimentally confirmed,

Answer 2

The gravity bends easy. This has been examined and confirmed. This proves one concern. photos do have mass. as quickly as they have mass they might desire to be affected whilst easy tries to flee from a gravitational field. the lack of awareness of the sunshine ends up in diverse debatable fact. i do no longer comprehend is there any measurements of speed of sunshine decrease than 0 gravity in vacuum. there's a pink shift phenomena of sunshine properly documented and used to degree the cost of stars, galaxies and so on. If the assumption of persevering with easy speed is genuine then one clarification ought to be the frequency shifts downwards in direction of pink. this might shrink the skill of the sunshine. A stress reduces the skill. The skill help could be decreased speed or pink shift. it rather is the sole obtainable clarification plausible right this moment. I strongly recommend examine slightly diagnosis papers in this concern.

Answer 3

okay I'll give it a go.

Say you travelled away from a point at twice the speed of light and then returned at twic the speed of light. In theory you would arrive back before you left and be able to watch yourself leave.

Answer 4

You need to take a couple of years of University level Physics and then a course on 'Special Relativity'.

After that, you'll feel all right about it.


Doug

Answer 5

Maybe reading Einstien's original text might help. Contact me thrue IM and we can discuss it if you woudl like.

Answer 6

Perhaps get hold of "Mr Tompkins in Paperback".