Posted on 09/26/2007 8:28:55 AM PDT by rudolfo182
Boulder High School students are planning a protest against the Pledge of Allegiance in the courtyard of their school Thursday morning.
(Excerpt) Read more at dailycamera.com ...
Less oxygen at that altitude.
‘Students with the activist club “Student Worker”’
Nuff said. Communist club.
“She said the group would rather the school hold the recitation — which the school must make available by state law - during lunch break, or at another time when students who don’t participate wouldn’t have to listen to it.”
Ah, YOU get say who hears what and when, huh Comrade?
The other day my son came home and said his teacher told him that glass is a liquid. I immediately commenced to beating the stupid out of my son.
It occurs to me, however, that if “glass is a liquid” is the kind of absolute foolishness being taught in schools today, a protest against the Pledge of Allegiance by the club “Student Worker” makes a lot of sense.
Common sense, right-from-wrong, and the very laws of nature no longer apply.
The rule today is: Question the Answers; Question Authority: As long as you disagree you are challenging POWER and therefore you are right whether you are or not.
The Hippies have taken over, and we’re all the poorer for it.
Shut up and get back to your desks or you're all expelled.
Glass is a liquid.
A super cooled liquid.
Uh, Emma ... it's "one nation under God" ... there's no comma in there.
I’d spank the little Commies and send them scurrying back to their desks.
please explain.
I hope that’s a joke.
Glass is absolutely not a liquid.
No, it's not. It's an urban legend that glass is a liquid. It is not based in science. The molecular structure of glass is that of an amorphous solid. Glass is not a supercooled liquid or a slow flowing liquid or any other kind of liquid.
“No, it’s not. It’s an urban legend that glass is a liquid. It is not based in science.”
Yep. The old “church windows” BS.
Some teachers just get off on the whole “everything you thought you knew is wrong” angle.
COping
Apparently some text books contain the information that glass is a liquid. That's frightening.
Glass flows. Very slowly. What is a liquid is clear enough if you’re talking about water or gasoline, but other materials don’t always fit neatly into the categories. Ice or snow evaporates without going into a liquid state first, sublimation they call it. Materials science is very complicated and not all is known as yet. Good major for college, lots of job opportunity. What about silly putty? Solid and it breaks if hit with a hammer. Bounces if you throw it. Sags into a puddle if you let it sit. In the lab I got water to boil and freeze at the same time. Triple point: hard to say what form water will be in.
I'm wondering what I'd do if my kid came home and told me he was in some commie-wannabe student group, and he was protesting the Pledge of Allegiance.
After suppressing the urge to smack him upside the head, would I take my kid to Pearl Harbor and spend a couple of days? Maybe visit Arlington National Cemetary, or the Vietnam Memorial, or Walter Reed, or Gettysburg...
How would you undo the brainwashing it took to make a kid protest the Pledge of Allegiance? In some ways a teenager probably cannot appreciate the price of freedom, but surely they could grasp more than these young idiots have.
“I’m wondering what I’d do if my kid came home and told me he was
in some commie-wannabe student group, and he was protesting the Pledge
of Allegiance.”
That’s a tough call.
I probably would help the kid find out if what old Communists say after
their countries implode is true:
“But we just didn’t give real Communism a fair chance.”
And say that I was going to help them become the best Communist they
could be.
To make it simple, I would be immediately giving about 90% of their
weekly allowance to their class members...dividing it up as best I could
so that the less-rich and/or the laziest got a better cut.
And no more clothes other than lowest-possible cost T-shirts, blue jeans,
undergarments and shoes.
And any thoughts of any sort of applications to a quality college or
university would be on hold. I wouldn’t want the kid to be tainted by
the faux Communists/Marxists that fill the faculty ranks (but live
in the upper 10% of society).
Maybe the lowest-cost tech school or ditch-digging would be the preferred
job-path.
I know this sounds silly/extreme. But I’d like them to find out what
happens when we follow REAL Communism to the ugly logical end.
UH ... glass IS a liquid ... at least that was what was taught in my engineering classes ... BS and Masters
Glasses are amorphous solids. There is a fundamental structural divide between amorphous solids (including glasses) and crystalline solids. Structurally, glasses are similar to liquids, but that doesn't mean they are liquid. It is possible that the "glass is a liquid" urban legend originated with a misreading of a German treatise on glass thermodynamics.
From a phase-change or thermodynamic point of view, room temperature glass is indistinguishable from molten glass. There is no thermodynamic phase change between the two. For water, as a counterexample, there is a point at which putting energy into the solid form (ice) melts the ice but does not raise the temperature of the water. For glass, there is no such point. The glass just gets softer and softer until it becomes what we’d all agree is molten. The fact that there is no heat of transition associated with this process (i.e. there is no “extra” energy required to transition “solid” glass to “liquid” glass) can accurately be used to note that “solid” glass and “liquid” glass are the same phase. In other words, what we think of as “solid” glass is really just a very viscous liquid (from a thermodynamic point of view).
On the other hand, thermodynamic considerations aside, solid glass just behaves differently from what we’d normally consider “melted” glass. “Common sense” tells us that they are different. The difference is not thermodynamic, but is related to molecular kinetics, i.e. cold glass molecules don’t have the energy to move past each other, and cold glass is therefore a “solid.” Similarly, hot glass is a “liquid.”
Depending on their needs, therefore, many people say that glass is neither a liquid nor a solid, but simply glass in different states of density or viscosity. That’s not necessarily wrong, just a different terminology.
All that stated, however, there are some non-liquid glasses. Impure glass, under the right conditions, can form a crystal, in a process called de-vitrification (de-glassing), and this crystal, while it may look like “glass” is actually a crystal. Crystals are generally considered to be a subcategory of solids, so devitrified “glass” would be a perfectly legitimate solid.
So, it’s not wrong to state that cold glass is a liquid, and, for some applications, it’s actually the most useful way to think of it.
Did they teach you what amorphous solids are, or is that on the PhD level?
Glass isn’t a liquid.
Good idea...Show them the true face of communism as opposed to the theoretical baloney they get in social studies class.
I forgot one more thing in my “action plan” in Post 19.
When I got the “Dad, when am I going to get a car?”, I’d be ready.
“Well, I was going to get you something nice, but fairly humble in
fitting with your Communist devotions.
At first I thought of a New Beetle, but remembered that that’s a
fascist car.
Then I remembered the perfect car for your new Communist lifestyle:
a Trabant from the former East Germany.
But now there’s nostalgia for the things and former Communists have
jacked up the price of existing examples.
And besides, even if we could get one here, the hidden Communists of
the EPA and government safety agencies wouldn’t allow you to drive it,
let alone idle the motor!
So, I guess you’ll have to just walk to school or ride a bike.
I do salute your committment to your Communist ideology.”
If it weren’t for the Communist Republic of Boulder (CRB), Colorado would be a far more conservative State.
P.S. Boulder is the home of CU and there is a high percentage of foreigners there.
Ref post #23
I noticed that the flag they carried had a “peace symbol” on it.
have you ever noticed that the “peace symbol” is actually the footprint of a chicken?
In 8th grade I got into a heated debate with my science teacher about this. But I was on the glass is liquid side. After I brought in an article about it being a super cooled liquid she just kind of stared at me. Then said that for the purposes of 8th grade science it wasn’t really hurting anyone to call glass a solid.
I think you just found the only subject MORE boring than the Internal Revenue Service code.
Full Disclosure: Did anyone bother to come up with an unambiguous definition of liquid more advanced than a General Chemistry text? Say, in terms of mean free path, or rate of deformation under STP and ordinary gravity, or somesuch?
Cheers!
She was right ... especially since glass is a solid. I don't know what paper you brought to her about glass being a supercooled liquid, but it was incorrect.
Solids, liquids and gases have specific physical properties as well as molecular properties. Glass, unfortunately for those of the "glass is a liquid" opinion, contains the physical properties of a solid while, at the same time, contains the molecular properties of an amorphous solid.
Now, for the purposes of 8th grade science, it does hurt folks to call glass a liquid because that's wrong.
ping
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