Pyrotechnic convention

We tried to feed our brains with various books we have acquired; interferometry, shadowgraph techniques and reading about a history of sociologists being sent into science labs to look at not just how the scientists interacted but also looking at how they went about representing their ideas via graphs, diagrams etc. and what factors played a role in this.
Our Dim Sum neighbour dropped round some good reading material to help us on our way.

We were ready for The Boat Show come evening, and headed off to San Francisco to join the crew and listen to Wobbly,Bevin, Jay and Martin play their sounds. We had a tour of the bay, went under the Golden Gate Bridge, edged past Alcatraz and then had an eye popping experience watching cutting edge fireworks as there was a pyrotechnics conference in town: American Pyrotechnic Association convention. The most phenomenal display; fireworks that speeded up, slowed down, filled the sky. It got really silly when they started making cubes and spheres.
There was a great moment when Bevin was playing with the skyline of San Francisco rolling by and five or six silhouettes of pelicans flew behind. Didn't capture that in a photo but heres some others:

the picture above is of the resident sea lions at pier 39.