|I live in Panel F.
||[Jan. 10th, 2008|02:47 am]
My brother has been staying with me all week, which means I have been doing a lot of drinking and not so much drawing. Instead, I leave you with perhaps my favorite comic of all time, a structural geological experiment expressed in six panels of so much pathos:
Figure 6.107 THE FAMOUS BEER CAN EXPERIMENT:
SEE THE FAMOUS BEER CAN EXPERIMENT FOR YOURSELF:
Hubbert and Rubey (1959) demonstrated the fundamentals of the fluid pressure model in their now-famous beer can experiment. Sample preparation consists of drinking two beers, preferably out of nonaluminum cans (Figure 6.107A). Place one of the empties in the freezer (Figure 6.107B), and remove a window from your house or apartment or lab (Figure 6.107C). Clean the glass with detergent, rinse, and leave it wet with a thin film of water. Place the can that is not in the freezer, top down, on the pane of glass. Now lift one end of the glass to form an inclined plane, and, with protractor in hand, measure the angle at which the beer can commences movement down the plane (Figure 6.107D). Hubbert and Rubey report typical angles of about 17° corresponding to a coefficient of sliding friction of metal on wet glass of 0.3. After the can in the freezer has been chilled, quickly pull it out and perform the same exercise (Figure 6.107E). This time the beer can begins to move down the inclined plane at negligible angles of slope (~1°). It moves easily not because the glass is wet; rather it moves because a fluid pressure derived from expansion of the warming air inside the can offsets the normal stress exerted by the can on the glass. Hours can be spent enjoying experiments on the role of fluid pressure in overthrusting (Figure 6.107F).
From: Structural Geology of Rocks and Regions, 2nd Edition, by George H. Davis and Stephen J. Reynolds.
And Hubbert and Rubey were in grad school when they discovered this?
Also, wow, you are the #4 hit already when searching for "Hubbert and Rubey beer" on Google.
2008-01-12 01:07 am (UTC)
Up to #2! Don't stop now!
I can't decide whether I should immediately hide myself from Google searches, or promote myself with further combinations of science and alcohol and comics I did not draw myself.
It's a famous paper. If they were in grad school when they wrote it, their advisor would put his name on it instead.
FUN FACT: The beer can experiment wasn't even Hubbert's claim to fame! Oh, those crazy geologists!
We recreated this experiment in one of my college lectures. It was much less charming in person, I guess.
I'm not intelligent enough to read this post.
It is about beer cans! And overthrusting! And the role of fluid pressure in overthrusting!
I'm sure the results improve after consuming I mean performing the experiment numerous times!
Statistical methods are useless if N is too small!
Thanks for the comic! I had forgotten it so it was a nice surprise to find amongst the overflowing junk mail. The perfect nightcap to a long day. I incorrectly imagined your cross-country move note as your comic-self, on skis, making a comic while intermittently firing your rifle.
your comic-self, on skis, making a comic while intermittently firing your rifle.
That is definitely how I am getting to Texas! Yee-haw!
so it's kind of like an air hockey table, except with a lightly pressurized liquid film cushion reducing the friction... like hydroplaning or something
It's sort of like an air hockey table where the puck pushes its own self up off the table, yes.