Vacuum?

[Bunnykiller]

alien Traveler" data-source="post: 18631443" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch">

Bubbles... Nice bathtub... Good bourbon... Wife arguing goodness of bourbon vs goodness of a married life... What could be better?

a wife that stays away from your bourbon???

 

[Bunnykiller]

The term vacuum is often misunderstood and consequently misapplied when discussing pressure measurements and choosing pressure transducers. By definition, vacuum is a space that is partially exhausted (as to the highest degree possible) by artificial means (such as an air pump). This definition is referring to a high or hard vacuum.

the earliest "vacuum pump" was a tube longer than 36" filled with mercury and then inverted and the opening was placed into a pool of mercury. Magically "air" would form at the top of the tube even no air was present

 

[Bunnykiller]

To have a vacuum it must be devoid of all air and low pressure does not equal a vacuum......... Literally

then how does one pull a vacuum of 2" mercury??

 

[Schlinky]

Ok, I've read three pages.

To my mind if you open a tank the liquid leaks out, that means you're breaking a seal that was previously affecting the flow of the liquid directly indicating that there is a negative pressure acting upon the liquid. Whether you call that negative pressure a vacuum or not is at your personal discretion. People have committed far worse atrocities on the english language

It's great that you're all so civil whilst discussing the minutiae of the terminology but I think the real issue here is... it sure as hell isn't 'steeping', who the hell came up with that?! 'Aging' sure, I'd even go for 'Maturation' but steeping?

If anything needs a pedantic thread it's the term steeping

 

[Schlinky]

the earliest "vacuum pump" was a tube longer than 36" filled with mercury and then inverted and the opening was placed into a pool of mercury. Magically "air" would form at the top of the tube even no air was present

The BBC did a great series on early science, Everything & Nothing I think it was called. It featured the mercury experiment, might still be knocking around somewhere, it's worth a watch.

 

[CMD-Ky]

Ok, I've read three pages.

To my mind if you open a tank the liquid leaks out, that means you're breaking a seal that was previously affecting the flow of the liquid directly indicating that there is a negative pressure acting upon the liquid. Whether you call that negative pressure a vacuum or not is at your personal discretion. People have committed far worse atrocities on the english language

It's great that you're all so civil whilst discussing the minutiae of the terminology but I think the real issue here is... it sure as hell isn't 'steeping', who the hell came up with that?! 'Aging' sure, I'd even go for 'Maturation' but steeping?

If anything needs a pedantic thread it's the term steeping

steep - flavor optimization through entropy; Brownian Movement Flavor Enhancer

 

[Bunnykiller]

Ok, I've read three pages.

To my mind if you open a tank the liquid leaks out, that means you're breaking a seal that was previously affecting the flow of the liquid directly indicating that there is a negative pressure acting upon the liquid. Whether you call that negative pressure a vacuum or not is at your personal discretion. People have committed far worse atrocities on the english language

It's great that you're all so civil whilst discussing the minutiae of the terminology but I think the real issue here is... it sure as hell isn't 'steeping', who the hell came up with that?! 'Aging' sure, I'd even go for 'Maturation' but steeping?

If anything needs a pedantic thread it's the term steeping

I totally agree with you on this one....

tea is steeped, wine is aged

 

[Robino1]

Robin... by chance, do you like Champagne??

Sorry, no. I don't even like wine.

Ok, I've read three pages.

To my mind if you open a tank the liquid leaks out, that means you're breaking a seal that was previously affecting the flow of the liquid directly indicating that there is a negative pressure acting upon the liquid. Whether you call that negative pressure a vacuum or not is at your personal discretion. People have committed far worse atrocities on the english language

It's great that you're all so civil whilst discussing the minutiae of the terminology but I think the real issue here is... it sure as hell isn't 'steeping', who the hell came up with that?! 'Aging' sure, I'd even go for 'Maturation' but steeping?

If anything needs a pedantic thread it's the term steeping

We've had a few threads on this subject