2009-03-01

pyat: (Default)
2009-03-01 03:32 pm
Entry tags:

SCIENCE!!

Frame analysis of the firing has also provided me with some rough data on the velocity of the Mousehold I probe.






The camera was filming at 14 frames per second. In between frames 2 and 3, the rocket has cleared the height of the launch tower, about 75 cm.

So, 0.75 m in 1/14 of a second means 10.5 m/s, or 630 metres a minute, or 37,800 metres an hour, or 37.8 kmph (23.4 mph). Or, to put it another way, roughly 0.09% of escape velocity.

I'm going to need about a thousand more engines! Right? It works that way, right? More seriously, I think my digital camera can be set for 30 fps. I'll try that for the next launch.
pyat: (Default)
2009-03-01 08:10 pm
Entry tags:

More Eyes

I've posted a closeup of [livejournal.com profile] velvetpage's eyes before. Today, at a birthday party for my nephew, I snapped a photo of Elizabeth while she was sitting my lap. She also has distinctive eyes, blue with a hazel fleck. The blue is brighter than [livejournal.com profile] velvetpage's, and the fleck not as well defined. Still, very cool.

Compare! )
pyat: (Default)
2009-03-01 08:37 pm

Still More Eyes

Why not finish things off? Claire and I.

The eyes! THE EYES! )