Fornax Chimiæ

The Craigleith area of Ontario is well known for its abundance of fossils. In 1992 I visited this locality on the southern shore of the Geor...

As we saw in part 1 and part 2 of this series the typical measurements of sky brightness in Providence are between about 4.1 - 4.3 nelm (n...

In my previous post I began to analyze the data from the sky brightness meter at Ladd Observatory. Now we'll take a closer look at the ...

"The sky above the port was the color of television, tuned to a dead channel." - Neuromancer , William Gibson, 1984. At the La...

The invention of magnetic bubble memory was once seen as a revolutionary computer development - the wave of the future. It is now a nearly f...

As a young child I can remember my late grandfather operating a ham radio station in Chicago using surplus military equipment that he obtain...

"It is impossible not to conjecture a connection with the volcanic eruption in the Sunda Straits, by which, on Aug. 26, the island of ...

The J90 logic is implemented using application-specific integrated circuit (ASIC) chips fabricated by IBM. There are 10 unique ASICs that ar...

"The night is passed at the hut, and the final ascent to the summit made on the second morning. This occupies several hours, as the an...

The telescope at Ladd Observatory uses a clock drive to compensate for the Earth's rotation and track the stars. Modern telescopes use ...