I appreciate the commitment to the bit to get WA vanity plate 9192MHZ.

Sadly, WA no longer allows digits on vanity plates at all. I was hoping to get 6835 MHz, but no such luck...

You can have numbers on a WA vanity plate. You can't have 4 numbers followed by three letters.

Of course the WA DOL site is a web app that doesn't support deep linking. You can get to the web app to check plate availability and rules here: https://fortress.wa.gov/dol/extdriveses/NoLogon?Link=Persona...

You may have to visit https://www.dol.wa.gov/vehicleregistration/sppersonalized.ht... first.

Is it that digits are prohibited or that four digits followed by three letters is prohibited?

When that photo was published, WA was still running sequential plates as three digits followed by three letters; since then, they ran out, and they chose three letters followed by four letters. When that runs out, they will most likely switch to four numbers followed by three letters, so it makes sense to reject personalized plates that match the future series of sequential plates.

I wonder if we can measure gravitational waves with the articles setup? I mean gravity and time are linked afaik?

No, the effect of gravitational waves is far too small. Those have to be detected by watching for actual movement.

Thanks for the really interesting link! Posts like this are why I read Hacker News.