[mikewarot]

I loved that story back then... with the advent of optical lattice clocks, and smaller sources, etc... have you done an update to the experiment?

[tvb]

Yes, the original Mt Rainier experiment in 2005 caught the attention of Stephen Hawking and I was asked to repeat the experiment for his PBS/BBC TV series in 2016. It was mid-winter up here in PNW so we used Mt Lemmon in Arizona instead:

http://www.leapsecond.com/great2016a/

And in 2018 I was asked to be part of a "time travel" episode on a History channel show. We used Palomar Mountain in California:

http://www.leapsecond.com/great2018a/

Each experiment was a little different; different combination of clocks, different audience, different mountain, different elevations, different latitude, etc.

[enjeyw]

Just been going through your blog, and I'm in love with your Synchronome clock, which begs the question (apologies if this is answered somewhere):

Of all the clocks you own, what's your favourite and why?