« on: 07/06/2018 01:05:59 »
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You may be asking yourself "What the hell does that mean?" Well, from a stationary observer's point of view, time slows down for an object in motion with respect to themselves. Since temperature depends upon the kinetic energies of the collection of objects being measured, what temperature would the static observer record, when compared to the moving observer's measure?Since the only way our stationary observer would have of measuring or recording the temperature would be through its black body radiation, and the transverse Doppler effect (measured at the moment of closest approach and when the object is neither approaching nor receding) is equal to the time dilation factor, the measured temp would be decrease by that factor.
A zero energy universe requires that the sum total of energy is zero.
AFAIK the entire concept of length contraction, time dilation etc arises from the premise that c is independent of direction, so you can't use relativity to suggest that c isn't independent of direction, and any experiment that confirms a relativistic prediction implies that c is indeed constant.May I add,independent of direction, implies independent of the source.
If nothing is faster than light, how can we look back in time with a telescope?An example: Chinese observers saw a "guest star" in the sky in the year 1054.
The nazi's determined that shooting Jews was having a really adverse affect on their troops. To solve this they established concentration camps to make the disposal of human beings more efficient. This had less psychological impact on their troops and was beneficial to their plans. Was it a good way to proceed?
For the record, I'm using definitions of good and bad that reflect actual quality, rather than a mistaken perception.
So why is this? What's the problem with determining that an object is not moving relative to you, so you should stop...?The problem is that the wavelength of practical car radars is too long to form an actual image. You just get a lot of reflections from the things around you - the best you can do is to have a beam that projects most of the energy straight ahead, and gets the best returns from straight ahead.
Can you ask me that again last week please?
Ok - I get where you are coming from @chiralSPONo, it doesn't. GRACE is measuring the local field strength at a fixed altitude. From this, you could calculate the field strength at any other fixed altitude (say, Mean Sea Level). This means that the map does not represent the value of g at the actual physical surface, But the difference in measured g at the same altitude for different parts of the globe.
But:Being higher up on the mountain places one further out of the gravitational well than being in the valley.
Being placed further outside of a gravity well is a gravity potential consideration, rather than a strength of gravity consideration. If GRACE feels more acceleration (stonger gravity) over a mountain, compared to a valley, then a clock on that mountain, or in that valley will be feeling the same difference.
Things move. Once they have moved they no longer occupy the place where they were. It's that simple.