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Ted Gerrard wrote:

> Mike Daly is simply winding us up, playing games in order to extract sources and information
> it has taken some of us years to collect - in my own case 15 years and many thousands of �. 

So you _own_ this information?  This forum (and things like Wikipedia) 
are for sharing information, not bragging.

>  Daly does not seem to know much about either Hooke's single mirrored instrument 
> because he has drawn the horizon rays travelling straight through a solid mirror
> http://en.wikipedia.org/wiki/Reflecting_instrument 

The source I used indicates it is a half-height mirror.  Gee, where have 
I seen one of those?  Oh yeah - my octant... and my sextant.  My octant 
is in the photos at the bottom of the octant page - see the half-mirror, 
half-clear horizon mirror here:
http://en.wikipedia.org/wiki/Image:Octant_pinnula_and_horizon_mirror.jpg

If you have better sources, perhaps you can share.  No wait - it's your 
private info - even though you didn't write it.

> or the principles of double reflection - he has drawn two separate rays 
entering the telescope on Newton's instrument
> http://en.wikipedia.org/wki/Octant_%28instrument%29 

Really?  I drew that?  You mean I was alive and was the draughtsman for 
the Royal Society?   I'm so old I forgot!

For those who care about the facts, that image is taken from the Phil. 
Trans. article and I only highlighted the existing lines with red - the 
original lines are rather poorly shown in the pdf.  Details here:
http://commons.wikimedia.org/wiki/Image:Newton_quadrant_detail.png

> I have just spent an interesting afternoon downloading all Daly's Wikipedia 
articles and will watch with interest to see how long he takes to 
alter/update them.

Don't be such an ass.

Mike


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