The Coolest Thing I’ve Seen in a Long Time

This page contains a video of something every science student has imagined, but very few see: the demonstration that, in a vacuum, all objects fall at the same speed. Usually you learn of this demonstration and are left to imagine it, since setting it up is somewhat complicated. On rare occasions, this demonstration is actually carried out with an evacuated cylinder of glass containing a feather and a bullet or some other dense object. I’ve never seen such a demonstration, and I’ve certainly never seen it carried out on the scale documented in this video.

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Server Outage

Thanks to an error by the company who provides my web server, Tracie and I lost about 12 hours worth of email. If you wrote to us on Wednesday evening through Thursday morning (about 9:30AM MST), you should re-send your message.

And yes, it’s been awhile since my last post.