"tom" <tmi### [at] uarkedu> wrote in message 
news:web.43aa2e944c6a712d29b8a2480@news.povray.org...
> "Jim Holsenback" <jho### [at] hotmailcom> wrote:
>> Better known as Hero Turbine ....
>
> Am I the only one who doesn't know what it is?

LOL! Well, I sorta knew of this mainly by illustrations from a few hundred 
years ago showing it. Idea is for steam to be produced from a fire 
underneath and make the upper part spin. Until now, after checking for info 
about it, I didn't realize it was basically reinvented from such an earlier 
time as 270 B.C. by someone in Egypt. Not sure why Paolo said "ancient Greek 
technology", although it has apparently been duplicated since that time.

As to the good rendering shown here, I didn't expect to see the wheel on the 
side because I only knew of the device as being just a scientific curiosity 
when it was created. That's how it usually gets described, that it wasn't of 
actual mechanical usefulness when it was first made and then the much more 
recent industrial age put steam to good use.

Hopefully a helpful suggestion: the brass texture might need an environment 
surrounding the model to prevent the typical suspended in space appearance.

Bob

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