Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
Konstantinos L. Angelis
09/07/12 07:00
Read: 657 times

#188262 - Time is passing anyway or is it just an illusion?
Responding to: Per Westermark's previous message
Time is passing anyway or is it just an illusion?

If you choose to measure it then it matters about
the method and technicque to use.
The ancient one is the day, the epoch, the year.
Since the day is defined between two sunsets and
these sunsets come late one second every 1 or 2
years then the correction is significant.

What happens if a missile is launced 1 second later
or earlier, will it find its target ?

A drift like this one third of a second is catastrophic.
Are you aware of famous time drift accidents like this:

"the failed intercept at Dhahran had been caused by a software error in the system's clock.
The Patriot missile battery at Dhahran had been in operation for 100 hours, by which time
the system's internal clock had drifted by one third of a second. Due to the closure speed
of the interceptor and the target, this resulted in a miss distance of 600 meters.

At every place where corrections can be made, then these must be made.


List of 22 messages in thread
Error in conversion from Unix EPOCH       Raghunathan      09/05/12 10:03      
   zero        J. Guy      09/05/12 10:32      
   DMonth[month-1] ????        Stefan KAnev      09/05/12 11:50      
      Stefan is correct and...      Daniel Contarino      09/05/12 14:11      
         +4 - 100 + 400      Per Westermark      09/05/12 14:46      
            right, but...      Stefan KAnev      09/05/12 14:54      
               88 years is a long time      Per Westermark      09/05/12 14:55      
                  That is what they said in the 60's      Neil Kurzman      09/06/12 13:46      
      Thanks. Problem solved      Raghunathan      09/05/12 22:26      
         Cross-checking important      Per Westermark      09/06/12 00:10      
            Just a foot note about the year      Per Westermark      09/06/12 03:00      
               ?back conversion      Stefan KAnev      09/06/12 04:56      
                  No - multiplier should not be 366      Per Westermark      09/06/12 05:21      
                     Running out of seconds > 1970      David Prentice      09/06/12 10:00      
                        signed is actually common - to support dates before 1970      Per Westermark      09/06/12 12:42      
                        Will You Now.      Neil Kurzman      09/06/12 13:53      
                           Have you considered leap seconds?      KONSTANTINOS L. ANGELIS      09/07/12 05:00      
                              Leap seconds can almost always be ignored        Per Westermark      09/07/12 05:37      
                                 Time is passing anyway or is it just an illusion?      KONSTANTINOS L. ANGELIS      09/07/12 07:00      
                                    Missiles? Leap seconds contra way larger drift...      Per Westermark      09/07/12 07:45      
         No such thing as a free lunch!      Andy Neil      09/07/12 15:28      
   Link?      Andy Neil      09/08/12 03:16      

Back to Subject List