Very well described, Richard!

db

Sent from my iPhone

> On May 6, 2015, at 8:31 PM, "Richard L. Hess" <[log in to unmask]> wrote:
> 
> Hi, Tom,
> 
> When measuring phase shift in degrees, it is relative to a given frequency. So, a 180 degree phase shift at 1 kHz would be the same time delay as a 360 degree phase shift at 2 kHz.
> 
> A polarity reversal is independent of frequency/wavelength. When it used to go up, it now goes down and vice versa. It is also a binary function: in or out of polarity.
> 
> I think 99% of the time when we say 180 ° phase shift, we mean polarity flip as we want it at all frequencies to be the same.
> 
> Cheers,
> 
> Richard
> 
> 
> 
>> On 2015-05-06 8:23 PM, Tom Fine wrote:
>> So is it correct to say that there can only be a polarity reversal
>> (180-degrees) whereas there can be any degree of phase shift?
>> 
>> -- Tom Fine
> -- 
> Richard L. Hess                   email: [log in to unmask]
> Aurora, Ontario, Canada                             647 479 2800
> http://www.richardhess.com/tape/contact.htm
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