[time-nuts] BYMLBI (Back Yard Medium LBI)

lists at lazygranch.com lists at lazygranch.com
Sat Mar 19 04:20:08 UTC 2011


http://www.astronomycast.com

Episode 211 was a good primer on celestial navigation. It covers time piece construction. 

Building your own backyard continental drift hardware would be high on the coolness scale. 
 
 
------Original Message------
From: Wolfgang
Sender: time-nuts-bounces at febo.com
To: Discussion of precise time and frequency measurement
ReplyTo: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] BYMLBI (Back Yard Medium LBI)
Sent: Mar 18, 2011 8:58 PM

On Friday 18 March 2011, Brooke Clarke wrote:
> For a number of decades I've tried to figure out a way to measure the
> period of the Earth's rotation accurate to at least 1 ms.
>
> [...]
> 
> Is it possible to do it using a radio method in my (large) back yard?
>
1 ms / day = 1.2e-8 = 460um position accuracy on the ground. 

If the measurement takes more than a couple of days, continental drift 
may need to be considered. 

- Wolfgang, DL1SKY

_______________________________________________
time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.



More information about the Time-nuts_lists.febo.com mailing list