Here's an old post for you.

[BillyMac]

Originally Posted by bob jenkins

It's possible that under a very strict definition, a "full moon" lasts only an instant. The moon would be a waxing gibbous the instant earlier and a waning gibbous an instant after.

Yes. However a specific phase, like full, first quarter, last quarter, or new, is often considered to last one day. Cool reference to waxing gibbous, and waning gibbous. I wish more people were as scientifically literate.

Originally Posted by 26 Year Gap

But it is also factual that a lunar eclipse is a subset of the full moon.

Sounds good.

[bob jenkins]

Originally Posted by 26 Year Gap

But it is also factual that a lunar eclipse is a subset of the full moon.

Right. And Billy said that "full moon and lunar eclipse" was redundant. He meant "wordy." Just saying "lunar eclipse" would be sufficient.

[mbyron]

Originally Posted by 26 Year Gap

But it is also factual that a lunar eclipse is a subset of the full moon.

No it's not. Neither a lunar eclipse nor a full moon is a set, so neither can be a subset of the other.

Perhaps you mean that the set of lunar eclipses is a proper subset of the set of full moons? It makes more sense to say this without set theory, IMO.

I think I'm going to have a great game tonight. This thread is making me a better official.

[Camron Rust]

Originally Posted by BillyMac

All lunar eclipses occur during a full moon. Every single one of them. No such thing as a crescent, gibbous, first quarter, last quarter, or new moon, lunar eclipse.

Of course...just like a solar eclipse can only happen during a new moon.

[BillyMac]

Originally Posted by 26 Year Gap

With the full moon & lunar eclipse.

Originally Posted by BillyMac

Redundant. Lunar eclipse will suffice.

Originally Posted by 26 Year Gap

No, they're not.

Originally Posted by BillyMac

All lunar eclipses occur during a full moon. Every single one of them. No such thing as a crescent, gibbous, first quarter, last quarter, or new moon, lunar eclipse.

Originally Posted by Snaqwells

Rule reference?

My B.S and M.S. in Earth Science. Twenty years of teaching high school Earth Science.

Originally Posted by 26 Year Gap

However, a full moon can occur without a lunar eclipse.

Correct. It happens quite often. Ten to thirteen times a year, usually eleven per year.

Originally Posted by 26 Year Gap

And there was a full moon before and after the event.

As well as during the event. The moon was still in its full phase during the entire eclipse.

Originally Posted by Camron Rust

Of course, just like a solar eclipse can only happen during a new moon.

Correct.

OK. Maybe redundant was the wrong word. "With the full moon & lunar eclipse" is kind of like saying, "I've got a five cent nickel (referring to 21st century American coins). I'm sure that mbyron will be along shortly to tell us what was wrong, if anything, with the statement, "With the full moon & lunar eclipse".