physics question - coffee related

[irul&ublo]

coffee offgasses over time... this is why gourmet bags have one way valves to let the offgass (CO2 if memory serves) out without letter the flavor destroying O2 in

so yes... trick question

I just offgassed.

[splat]

Check your pant leg. There's a difference between gas, liquid, and solid.

[13]

It really doesn't matter -- it'll still be fresher than the coffee you buy at the local supermarket. It is whole bean, right?

Mr. Barista....could you put that double half caf carmel cappucino up my ass?

Decaf or regular?

[TurxSki]

Real world coffee bean example: Coffee bean bags have one way valves to let gas out but not in.

Ding-Ding we have a winner

this is why gourmet bags have one way valves to let the offgass (CO2 if memory serves)

Well, generally, when the beans get machine-packed, Nitrogen is injected to expel the air, and aid in keeping.
Hand packed though, yeh, I guess.

[The AD]

Chances are equally as good that the coffee was roasted, bagged, and sealed in Lima, at zero altitude, and then shipped back to the highlands for tourist sale.

Good point. I always assume Peru is "at altitude," but then it also has a Pacific Coast. So the usual disclaimer about assuming applies

[rideit]

well, you didn't make an ass out of me!

[Bennett]

Mr. Scruff....

Seriously... the plane will take off!!!!

By Bus!

[rideit]

Ahhh...the Peruvian coast...memories.....

[road trip]

Shoot the hostage?

I think we have as many physicists and engineers on here as we do dentists!

[maniloff]

I think this comes down to details and math or an experiment. And seeing as how I once taught a course titled Physics for Pyros, I like experiments.

People have pretty much hit it. If it's packaged at altitude, or has a valve and taken to altitude, when you take it back to sea level it'll shrivel a bit. The major limiting factor will be that the beans will act as a support lattice. The vacuum isn't all that great (like most things, really good vacuums are expensive), so there's some air in there, but not much. My bet is you don't see much shrinkage because the space between the beans is mostly enough for the air.

Of course, if it's packaged at sea level and has no valve, you won't see change.

I'm so disappointed that the obvious Seinfeld shrinkage jokes were made before I read this thread.

[phUnk]

I think this comes down to details and math or an experiment. And seeing as how I once taught a course titled Physics for Pyros, I like experiments.

People have pretty much hit it. If it's packaged at altitude, or has a valve and taken to altitude, when you take it back to sea level it'll shrivel a bit. The major limiting factor will be that the beans will act as a support lattice. The vacuum isn't all that great (like most things, really good vacuums are expensive), so there's some air in there, but not much. My bet is you don't see much shrinkage because the space between the beans is mostly enough for the air.

Of course, if it's packaged at sea level and has no valve, you won't see change.

I'm so disappointed that the obvious Seinfeld shrinkage jokes were made before I read this thread.

Wow, you're a freaking nerd.






Also, I got the radiator on my CBR fixed.






PS. Tammy says hi.

[maniloff]

Wow, you're a freaking nerd.

Also, I got the radiator on my CBR fixed.

PS. Tammy says hi.

Dude, that's so old news.

Glad to hear it. I'm about to move back downtown (by the wine store). Then I'll stop blowing her off. I'm just too lazy to drive up there from where I'm staying in the burbs.