https://www.vice.com/en/article/78kqjq/the-smallest-radio-receiver-ever-is-made-from-imperfections-in-diamonds

 

I was wondering if this kind of an object might be small enough to be accelerated to relativistic speeds and whether (in that unlikely event)  it might  be possible to monitor any distortion in the signal due  the receiver  moving wrt to the source  at high speeds.

!

Moderator Note

Moved, because this is not a "Lounge" topic

 

 

Radio receivers regularly have to compensate for Doppler shifts in spacecraft. It would be true for relativistic speeds, too. The bandwidth would be important as well, since having a narrow frequency sensitivity is how the Pound-Rebka experiment worked

 

edit: I can't recall if it was reading about voyager or pioneer craft (or perhaps some other mission) where I first encountered this, but the receiver had to be tuned depending on the time of day, owing to the changing Doppler shift of the signal from the earth rotation

It's also interesting. +1