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[Mike Sokol]

Somebody say something before I go "Two-Phase" crazy again....

[Jonathan Johnson]

Somebody say something before I go "Two-Phase" crazy again....

When you scope across two "hot" legs of a three-phase wye service (with common neutral), you will see a single-phase signal on your scope screen.

[Chris Jensen]

Somebody say something before I go "Two-Phase" crazy again....

For someone with very little education on the topic two phase makes a ton of sense for casual understanding.  When you describe a single phase 250V system you pluralize the word phase.  Wouldn't you say it's two legs 180deg out of phase or the phases are 180deg of each other?  Based on a graph my brain says one trace one phase, two traces two phases and three traces three phases.

[Cailen Waddell]

For someone with very little education on the topic two phase makes a ton of sense for casual understanding.  When you describe a single phase 250V system you pluralize the word phase.  Wouldn't you say it's two legs 180deg out of phase or the phases are 180deg of each other?  Based on a graph my brain says one trace one phase, two traces two phases and three traces three phases.

Due respect this was recently explained quite adequately.  The legs are bout out of phase with eachother.  You are measuring it backwards with your meter.  The phases are in phase otherwise they would cancel out.


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[Jeff Bankston]

I'm out of phase right now. Women have 2 phases. Left leg and right leg.

[Mike Sokol]

OK, let's close this topic for now...

[David Buckley]

You started it

We could, of course, extend this to audio and ask about that button  on the mixer with the Greek "Phi" on it, and ask is it a phase reverse button, or a polarity invert......

[John Roberts {JR}]

You started it

We could, of course, extend this to audio and ask about that button  on the mixer with the Greek "Phi" on it, and ask is it a phase reverse button, or a polarity invert......

He was trolling his own forum. 

"Polarity" has too many letters to squeeze onto a tight console faceplate, "Phase" is just wrong, "Pol" is not likely to be understood, so Phi wins.

JR 

[Mike Sokol]

He was trolling his own forum. 

Yup... That's what I do when I'm bored. An idle mind is the devil's playground. 

[Jay Barracato]

So I just found out after 30 years that the "del" function ( as used in the Laplacian) is also called a " nabla".

There was also a chemist I know that was trying to get phi adapted as a symbol for moles. Kind of amazing in chemistry our most fundamental unit doesn't have a symbol.

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