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[cybrxkhan]

metaphysics/cosmology/theology/eschatology

 

[Robert Can't]

http://i.imgur.com/af1VbSx.png

 

[hobbsyoyo]

What's the difference between gauge pressure and absolute pressure?

Is absolute pressure a reading within the reaction chamber while gauge is a measure at the injector/outlet?

just curious

Gauge pressure is the pressure you read on the gauge, which typically aren't 'zeroed' out. When measuring pressure, gauges don't usually account for the pressure of the air. So let's say you have a gauge attached to your car tire and it reads 18psi. That means the pressure in the tire is 18psi above air pressure, which (IIRC) is ~14.7psi) so the actual pressure in the tire is 18psi + 14.7psi = 32.7psi. 32.7psi is the absolute pressure, because it measures from zero pressure, while 18psi is the gauge pressure, because it measures with the 'zero' taken to be the ambient air pressure.

In this case, it would be silly to use 1psi absolute pressure as it would mean the tank is in partial vacuum and would require some serious plumbing to get the gas out of it (or air would back up into the tank and make the rocket inoperable). However, there was so little information in the question that I had to ask.

 

[W|M]

RapidoAzulSonic: We've also tried all government time and time again. Didn't work either.

 

[Arrow Gamer]

"N-no," said Draco. He was looking rather pale, and was still stammering, but had at least stopped the incoherent noises he'd been making earlier. "You're a Parselmouth, you can speak Parseltongue, it's the language of all snakes everywhere. You can understand any snake when it talks, and they can understand when you talk to them... Harry, you can't possibly believe you were Sorted into Ravenclaw! You're the Heir of Slytherin!"

...

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"SNAKES ARE SENTIENT?"

 

[Robert Can't]

http://i.imgur.com/VRtwCkt.png

 

[Bratmon]

Awkward silence is a precursor to adjournment, not an invitation to speak more.

 

[cardgame]

http://www.reddit.com/r/IAmA/comments/1c5zxh/i_am_morgan_freeman_ask_me_anything/

 

[mythmonster2]

http://www.giantitp.com/forums/showthread.php?p=14899302

 

[cardgame]

Engineer.dll

 

[CivDad]

People's Republic of China~46
Greater German Reich ~ 7
Greater East Asian Co-Prosperity Sphere ~ 85

 

[cardgame]

https://www.youtube.com/watch?v=vBBzRxn5Snc

 

[hoplitejoe]

dangerous

 

[W|M]

http://forums.civfanatics.com/showpost.php?p=12361266&postcount=204

 

[cybrxkhan]

10chars <-- not part of ctrl+v

 

[Terrance888]

http://wizards.com/dnd/Article.aspx?x=dnd/toon/TombHorrors

 

[W|M]

https://www.google.com/search?site=...6.636.4j2j1.7.0...0.0...1c.1.9.hp.rRfkeE-kcZE

 

[Robert Can't]

Stephanie Miles

 

[hoplitejoe]

Inginuity

 

[Bratmon]

http://i.imgur.com/mkvoWfv.jpg