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Venusian shadow - part 2



 
 
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Old May 22nd 07, 12:02 PM posted to uk.sci.astronomy,sci.astro.amateur
oriel36[_2_]
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Default Venusian shadow - part 2

On May 21, 7:48 pm, AustinMN wrote:
On May 21, 11:28 am, oriel36 wrote:





On May 21, 4:41 pm, AustinMN wrote:


On May 21, 9:48 am, oriel36 wrote:


On May 21, 2:27 pm, AustinMN wrote:


Who would like to try to get oriel to understand the meaning of the
word "apparent" in Pete's paragraph?


Austin


Venus does noit have an apparent motion,neither does Mercury,Mars
Jupiter or any of the other planets.


So they don't appear to move? They just stay stationary in the sky?


Austin


The orbital motions of Mercury,Venus ,Mars and the other planets are
seen to move against the stellar background over long periods.


So they do appear to move ("apparent motion")? "Seen to" and
"apparent" are synonymous terms, oriel. Someone with your command of
language ought to know that.

Make up your mind. Either they do appear to move, or they don't.

Austin- Hide quoted text -

- Show quoted text -


True and apparent motions are just common astronomical terms,the
movement Pete's shadow is not due to the apparent motion of Venus but
the true motion of the Earth,specifically axial rotation.

I am sure Pete and Anthony will be doing cartwheels of joy looking at
your brilliant defence but they have at least the comfort of knowing
that they are no better or wrorse than your level of understanding.I
welcome your attempt as it always is an occasion to present the
difference between apparent motions and true motions.

The apparent motions of the planets,for both Ptolemaic and
heliocentric astronomers ,were both the same -

http://antwrp.gsfc.nasa.gov/apod/ima...loop_tezel.jpg

The heliocentric astronomers however used orbital comparisons between
the Earth's orbital motion and the other planets to conclude a common
heliocentric orbital motion -

http://antwrp.gsfc.nasa.gov/apod/ima...2000_tezel.gif

There is no such thing as 'apparent' motion of Venus against an
axially rotating Earth unless you really want to highlight that Pete
here is an unapologetic astrologer.I am sure he has recognised that by
now but due to your spirited defence I get to really shopw the guy
just how stupid he is.


















 




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