Grant Hutchison's Blog, page 34

Stephen R. Wilk: How The Ray Gun Got Its Zap

I sometimes think that we should spend at least a little time explaining everyday manifestations of physics to undergraduates, so that they can talk about phenomena that appear in everyday lives. How The Ray Gun Got Its Zap (2013), is subtitled Odd Excursions Into Optics, which (combined with the manifesto above) pretty much covers what … Continue reading Stephen R. Wilk: How The Ray Gun Got Its Zap →

The Celestial View From A Relativistic Starship: Part 2

In my previous post, I described the visual appearance of the starry sky for an observer moving at a substantial fraction of the speed of light—for instance, aboard a working Bussard interstellar ramjet, like the one pictured above. I’ll recap the terminology I established in that post, which comes from Special Relativity. We call the … Continue reading The Celestial View From A Relativistic Starship: Part 2 →

CCCP 2018: Dornie

This year the Crow Craigies Climbing Party stationed itself in Dornie, on Loch Alsh, handily placed for any number of hills. Static high pressure over the North Atlantic brought a succession of warm, humid days with light winds, often with low cloud in the morning dissipating to bring blue skies in the afternoon. The moral … Continue reading CCCP 2018: Dornie →

The Celestial View From A Relativistic Starship: Part 1

This is another one of those topics (like Coriolis effect and human vacuum exposure) that many science fiction writers seem to know enough about to include it in their stories, but not quite enough to get right. So in this post (and an estimated three subsequent posts) I’m going to write about what the starry … Continue reading The Celestial View From A Relativistic Starship: Part 1 →

Latin Plurals: Nouns Ending in -us

  Most Latin words in -us have plural in -i, but not all, & so zeal not according to knowledge issues in such oddities as hiati, octopi, omnibi & ignorami … H.W. Fowler, A Dictionary Of Modern English Usage (1926) Writing about the noun form of bogus recently made me think about nouns ending in … Continue reading Latin Plurals: Nouns Ending in -us →

Two Books About Longitude

It is well known by all that are acquainted with the Art of Navigation, That nothing is so much wanted and desired at Sea, as the Discovery of the Longitude, for the Safety and Quickness of Voyage, the Preservation of ships, and the Lives of Men. The British Longitude Act (1714)* As a sort of … Continue reading Two Books About Longitude →

Glen Prosen: Mayar and Driesh

Mayar (NO 240737, 928m) Driesh (NO 271735, 947m) 20.4 kilometres 860m of ascent I’ve climbed these two hills from all sorts of directions, including a previous report from Glen Doll. But I’ve never come at them from the Glen Prosen side. While Glen Doll has a sort of bustling cosmopolitan feel to it, with its … Continue reading Glen Prosen: Mayar and Driesh →

Ardnamurchan

May’s always a good time to visit the west coast of Scotland. This time, we had a pleasantly sunny stay on the Ardnamurchan peninsula, north of Mull. The main road in Ardnamurchan is the B8007, a classification that pretty much says it all—it’s a winding single-track with passing places, which sticks largely to the shore … Continue reading Ardnamurchan →

Coriolis Effect In A Rotating Space Habitat (Supplement)

I’ve received a few enquiries in response to my post “Coriolis Effect In A Rotating Space Habitat”, concerning something I didn’t address at the time—what happens to the trajectory of objects moving parallel to the axis of rotation. (Though I did mention this topic in passing in my post about the Coriolis effect in general.) … Continue reading Coriolis Effect In A Rotating Space Habitat (Supplement) →

Lindberg 1/96 Moon Ship (Revised)

This is a rickety old kit, first issued in 1958 by Lindberg. The version I’m building is a nostalgic reissue by Round2. During its sixty-year history, it has undergone various metamorphoses: shifting its supposed scale between 1:96 and 1:200; changing its name from U.S. Moon Ship (1958) to Star Probe Space Shuttle (1980s) to Lunar … Continue reading Lindberg 1/96 Moon Ship (Revised) →