[LEAPSECS] leap smear

[Gerard Ashton]

On 9/18/2011 7:02 PM, Tom Van Baak wrote:

>> This may or may not be a boundary condition.  The fundamental

>> system engineering problem is that there are two different types

>> of time, two kinds of clock.

>

> Rob,

>

> You keep saying this, but there's only one kind of clock and

> one kind of time. When you get two or more clocks you have

> the ability to compare them and measure time interval among

> them. Time interval is often an integer (cycles) and fraction

> (of cycles). What you are calling time of day is merely time

> interval, where the start time is an artificial agreed upon point

> in the past. But it's still all time interval.

>

> /tvb

>


No, there is time where different instances of the same nominal time 
interval
in the same reference frame will have the same duration, measured with 
atomic transitions or other physical
phenomenon, and "time" (actually, angular position of the Earth) where 
different instances of  the same
nominal "time" interval will have different durations when measured with 
atomic transitions.

Gerry Ashton