The Antikythera device: you’ve probably heard of this marvel. Continue reading “Homage to Archimedes”
Category: geometry
Concolor
It’s pleasant that people celebrate my birthday with fireworks. Actually Continue reading “Concolor”
Turkey new edition – and conspiracy theories
This is another publication announcement.
Continue reading “Turkey new edition – and conspiracy theories”
Conjunction puzzle; Australia burning; tactical voting
The Venus-Saturn conjunction is still to come – day after tomorrow Continue reading “Conjunction puzzle; Australia burning; tactical voting”
Venus-Saturn conjunctions
You can see space but you can’t see time – “Time is an ice that instantly sublimes.” Continue reading “Venus-Saturn conjunctions”
Venus nodes
Venus will be at the descending node of its orbit on Continue reading “Venus nodes”
Trios for July 4
As the slender Young Moon emerges into our evening sky, after its New moment on July 2 when it eclipsed the Sun, Continue reading “Trios for July 4”
Maps and their centers
Here is the evening’s sky for Sunday June 9. Continue reading “Maps and their centers”
Precession slide-rule
On this Good Friday, the Moon is Full and Continue reading “Precession slide-rule”
Comments: Cato, Stereo
Prose is linear, but the blog-and-comment system, Continue reading “Comments: Cato, Stereo”