Re: What is Circular motion ??

["Spirit of Truth" <juneharton@xxxxxxxxxxx>]

"Randy Poe" <poespam-trap@xxxxxxxxx> wrote in message 
news:1167306828.563534.65720@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> Spirit of Truth wrote:
>> "Randy Poe" <poespam-trap@xxxxxxxxx> wrote in message
>> news:1167235317.296317.129410@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> >
>> > Spirit of Truth wrote:
>> >> <studiescircle@xxxxxxxxx> wrote in message
>> >> news:1167151611.667891.46240@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> >> > What is Circular motion ??
>> >> > The direction of a body's motion is constantly changing when it
>> >> > moves in a circle at a steady speed.
>> >>
>> >> Does this then become an acceleration each moment to change the 
>> >> straight
>> >> line directional vector?
>> >
>> > Yes.
>>
>> Thanks! Then why such a hullaballoo made in the past over the concept
>> that light bends in a gravitational field?
>
> Because Newtonian theory says gravity affects masses,
> and light is massless.
>
>> Surely in the M-M experiment
>> the travelling back and forth light had to bend with the Earth in order 
>> for
>> it to appear that it was going in a straight line back and forth?
>
> The M-M experiment has nothing to do with gravitational
> bending of light. The earth doesn't have enough gravity to cause
> a noticeable effect. The answer to your question is "no". The
> light doesn't have to "bend with the earth to appear to be going
> in a straight line back and forth".
>
> By "bend with the earth" do you mean follow the curve
> of the earth, so that it would be the same height above
> the earth's surface everywhere? Light doesn't do that.
>
>                     - Randy

The Earth is turning circularwise, so surely the light is doing that too?


from:  Spirit of Truth

(using June's e-mail to communicate to you)!