2019 : Trips and Walks Summary
A ‘quick’ list of the main local Trips and Walks I did in 2019. Walks worth considering are marked like this
This took hours to
GPS really is a miracle of technology
I only vaguely understood how GPS worked, including that Relativity was involved. I was amazed to read the details in a recent edition of Silicon
How far away is that plane? Using Log tables ...
Today I took this phone snapshot of a great plane trail. It was about 3pm, looking about West. You can click on any image to
Racecourse - 1950 ground photo and 1945 aerial survey
I’ve been thinking about today’s post (1950 ground level photograph) in the context an earlier aerial survey (1945) as mentioned here on my
Williamstown Racecourse - 1950s images (migrant hostel)
A number of people have kindly sent my images over the last few years. I have gained permission to post them, but ask you respect