Monday, May 24, 2021

Thermodynamics at work

This steam engine is a tandem compound design, with a high and low pressure cylinder.  The high pressure cylinder is the small one, closest to the camera. You can see the insulated steam line leading from there to the steam chest of the larger, low pressure cylinder.  This engine was built, and still operates, in Ballarat Australia at the Sovereign Hill historical site.

Monday, May 17, 2021


The really bizarre thing is that they sell mostly the same made in (insert Asian country) stuff as pretty much every mall and airport concourse I've been in.

Monday, May 10, 2021


Grampians National Park, Victoria Australia  This view is from the early stages of the Beehive falls to Mt. Difficult trail.

This is vaguely reminiscent of the desert varnish I remember from Utah and other parts of the southwestern US, but with a very gray cast to it rather than being nearly black.  It's still quite visible which surfaces are 'new' by the orange and yellow hues.  Of course by new I mean they've probably been exposed a few thousand years or less.  

Monday, May 03, 2021