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Nov. 19th, 2007 05:34 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
phthalombrageThings that are amusing at 5:3X AM when you realize you don't actually have to have your interp paper done by tomorrow, but should still finish matsci:
General commentary on caseousness (blah, freerice! this is like "trite coffee"):
Seriously fucking ridiculous.
I know the street names for carbonated beverages.
Why did they go with "pop"? Just why?
Also, they forgot "coke" for the Texans.
It's like when Stan used to want to include colloquial phrases in his letter to clients and would write that they would use a "belt and suspenders" approach, etc.
And I totally know what it means for soda to go flat.
Strange formatting:
The author did not use the literal string method for quotes. It may be correct, but it's worth noting (CMU tv is broadcasting the Randall Munroe talk this week!)
The author did not know how to use proper punctuation in compound sentences (there are two!).
The author confused "loose" for "lose".
At least the author used "its" correctly; otherwise I'd have a conniption or something.
Seriously fucking ridiculous!
The scary part:
This exercise defines shelf-life for a soda as determined by the resistance of its container to carbon dioxide diffusion... because the soda will go flat.
What about the expiration of its contents?
Is this the truth about soda expiration dates?
Soda is weird chemicals, people.
It packs the power to clean the crud out of tank treads (sweet, sweet alliteration) and quite possibly might never go bad.
Seriously fucking ridiculous.
MSE book, Example Problem 14.3 (verbatim)
Computations of Diffusion Flux of Carbon Dioxide Through a Plastic Beverage Container and Beverage Shelf Life
The clear plastic bottles used for carbonated beverages (sometimes also called "soda," "pop," or "soda pop") are made from poly(ethylene terepthalate)(PET). The "fizz" in pop results from dissolved carbon dioxide (C02); and, because PET is permeable to CO2, pop stored in PET bottles will eventually go "flat" (i.e., loose its "fizz"). A 20 oz. bottle of pop has a CO2 pressure of about 400 kPa inside the bottle and the CO2 pressure outside the bottle is 0.4 kPa.
(a) Assuming conditions of steady state, calculate the diffusion flux of CO2 through the wall of the bottle.
(b) If the bottle must lose 750 (cm^3 STP) of CO2 before the pop tastes flat, what is the shelf-life for a bottle of pop?
Note: Assume that each bottle has a surface area of 500 cm^2 and a wall thickness of 0.05 cm.
General commentary on caseousness (blah, freerice! this is like "trite coffee"):
Seriously fucking ridiculous.
I know the street names for carbonated beverages.
Why did they go with "pop"? Just why?
Also, they forgot "coke" for the Texans.
It's like when Stan used to want to include colloquial phrases in his letter to clients and would write that they would use a "belt and suspenders" approach, etc.
And I totally know what it means for soda to go flat.
Strange formatting:
The author did not use the literal string method for quotes. It may be correct, but it's worth noting (CMU tv is broadcasting the Randall Munroe talk this week!)
The author did not know how to use proper punctuation in compound sentences (there are two!).
The author confused "loose" for "lose".
At least the author used "its" correctly; otherwise I'd have a conniption or something.
Seriously fucking ridiculous!
The scary part:
This exercise defines shelf-life for a soda as determined by the resistance of its container to carbon dioxide diffusion... because the soda will go flat.
What about the expiration of its contents?
Is this the truth about soda expiration dates?
Soda is weird chemicals, people.
It packs the power to clean the crud out of tank treads (sweet, sweet alliteration) and quite possibly might never go bad.
Seriously fucking ridiculous.
