Dann,
I suppose it's just my luck to understand what you didn't say and
misunderstand what you did say. Now that I've fashioned myself a handle on
the gravitational lens, can we maybe go back to time dilation?
Because obviously I didn't get it.
One thing we *are* learning though - who would have thought that gravitation
was so interesting and complex a phenomenon? It's amazing what you can come
up with if you raise the quality of your intellectualisations.
Elephant
> From: Dan Dunn <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> Date: Fri, 09 Mar 2001 15:03:13 -0600
> To: [EMAIL PROTECTED]
> Subject: Re: MD Glenn, Platt, Ant and the creation of patterns
>
>
>
> elephant wrote:
>
>> Actually you seem to be saying that, in relativity,
>> gravitation is a lot like what happens to a light 'wave' when it hits a pane
>> of glass, or the surface of the water, at an angle - refraction. The
>> sub-atomic particles in the apple are changing direction just a bit less
>> quickly when they near the earth, so that the apple performs a 'break turn'
>> towards the earth like a canoe with a paddle in the water. Atleast, that's
>> how it looks to us - but in reality what's happening is that, for the
>> particles in question, time itself is running slower - that's why they "run
>> on" towards the earth just a tiny bit more than their normal trajectory-wizz
>> around the nucleous would allow for.
>>
>> Ok, am I anywhere near?
>
> This is interesting. What you are describing is an *additional* gravitational
> effect that I omitted. What I described, time dilation, and what you are
> describing, a gravitational lens, both contribute to gravitation. The two
> effects
> are cumulative.
>
>> Supplementary: WHY is time supposed to run slower nearer to massive bodies?
>>
>> - or, are we maybe to take this idea as definitional of the relative "speed
>> of time" and of "massive bodies" in just the same way that Newton's laws
>> are definitional of force and mass?
>
> Exactly. If you can determine why time is slower within a gravitational
> field, you
> will either be hailed as the greatest genius since Einstein himself, or
> condemned
> as a crackpot (and hailed as a genius in the future).
>
>
>
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