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Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

ceramics.org

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Re: Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

#91
post #57

Earlier quoted context omitted.

This idea of a shadowy unified people that control everything is a poor way to try to make sense of the world.

“They” refers to the teachers in this context. Sorry to assume you spoke English as a first language.

Who hurt you? Seriously, what's your problem?

Re: Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

#92
post #61

Earlier quoted context omitted.

He must not have been the top of his class if he had ended up a HS teacher. Which is actually kinda sad. Pay and working conditions for teachers shouldn't be so that being a teacher is regarded as a failure.

Is it regarded as a failure? Teachers in public schools work part time for 25 years and get a scaling pension they “negotiated” with the politicians their union dues elected. I’d call them fantastic winners. Grifters? Sure. But certainly not losers.

My parents, both with master’s degrees, worked at least eight hours every day teaching, grading assignments, and then preparing for the following day. I would guess about ten hours on average, seeing as I was mostly left alone as a child while my parents worked over the kitchen table. Yes, they don’t teach during the summer. Their pay reflects that. I won’t even touch on personal expenditures for supplies. Grifters?! My lord. Teachers are criminally underpaid, highly educated adults who shape society’s future while fighting its current failures. All while being inexplicably hated and ridiculed by students, parents, and I guess HN.

No need to take my word for it: https://www.cnn.com/2018/04/15/us/teacher-pay-myth-misconcep...

Re: Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

#93
post #78
post #73

Earlier quoted context omitted.

Good lord this comment is condescending. Some people are teachers because they want to be teachers, period. They find fulfillment in it. That’s not even touching the unnecessary dig at public institutions.

Did you go to public schools? I did. The student body is mainly uninterested, incapable, or irredeemable. Some great diamonds in the ruff to be sure. But certainly these people would excel regardless of a 1-off actual good teacher seeing as most of them are just mailing it in, like their student body. Why go to the trouble of getting a masters to waste it like this? FWIW I don’t believe teachers should need a bachelo…

I went to public schools. The majority of teachers worked hard and did well with what they had. And many of them had masters.

Re: Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

#94

Earlier quoted context omitted.

What other unsubstantiated claims did she make?

Not the OP, but a fourth grade substitute teacher made the claim that we always saw the same side of the moon because it didn't rotate. I don't know what got to me the most: that she didn't understand, that my attempt to explain it didn't go over, or that the other kids in the class didn't get it either. In any case, I've been working on improving my explanations ever since.

And your beef is that it does rotate, at a rate of one rotation per revolution?

Sounds kind of pedantic to me, and confusing (certainly to kids).

Re: Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

#95
post #88
post #42

Earlier quoted context omitted.

Most school teachers are full of it, but they don’t mean to. They are simply low level clerics in the church of truth. They recite a very lossy account of what they were ordained with at a likely low level institution. It’s not really their fault - people need jobs, the ministry needs repeaters, and the pay is bad. Your teachers weren’t the disease - they were just a symptom.

If only teachers were as intelligent and wise as HN’s anonymous commenters.

If only all people were as intelligent and wise as HN’s anonymous commenters (I wish I would too). When you think about this, it's almost like instagram but for knowledge.

Re: Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

#96

>Their measurements reveal that medieval glass has a much lower viscosity than expected at room temperature—16 orders of magnitude less than previous estimates It's pretty rare to read an article in which the degree of previous error is sixteen orders of magnitude.

The way viscosity is measured doesn't follow naive expectation though.

Water at 0C has over six times the viscosity of water at 100C, yet to the untrained human they seen to flow about the same. Olive oil is 100 times more viscous that water. Yoghurt about 10000 times more viscous than water.

Re: Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

#97
post #85

Earlier quoted context omitted.

> You are simply full of it Except your calculations support exactly what I said. > It’s 3 months off. Yes, it's typically 3 months off if they don't work summer session in a traditional schedule. Which most who are able to (there are reduced available positions) do. Hence, the full-time but, for some, 3/4-year seasonal full-time that I stated.

They get paid for that extra time if they choose to work it. Otherwise a teacher works 30 hours a week when normalized to a 48 hour work year. This is part-time work. But they get golden health care, pension, and early retirement. Good for them. This is why teachers aren’t suckers as the OP suggested. They’re in on a great scam. Good for them. The sucker working retail could only dream.

A typical English teacher who works 2200 hours whereas a full time worker with 2 weeks paid vacation works 2000.

https://www.weareteachers.com/teacher-overtime/

Re: Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

#98

Finally! I always knew my 7th grade science teacher was full of shit on that one, she was so adamant about some things that turned out to be wrong. This one was maybe more excusable because it was common to teach at the time. Maybe it ended up making us better students in the end because we learned to fact-check our teachers, and not to be adamant about things we only think are true (though I'm still guilty of that m…

The problem is that it's obviously wrong with a simple experiment - just look at a few really old windows. I live about 1/4 mile from a church that was built 1300 years ago (https://en.wikipedia.org/wiki/St_Peter%27s_Church,_Monkwearm...). There's not much of the original glass left but where there is the thicker part is occasionally at the top of the pane because that's how it was originally mounted.

Teachers (and everyone else) will be wrong about things. That's OK. The problems happen when people don't bother to do any simple checks themselves, and just accept things as fact without doing any critical thinking or experimentation of their own.

Re: Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

#99
post #78
post #73

Earlier quoted context omitted.

Good lord this comment is condescending. Some people are teachers because they want to be teachers, period. They find fulfillment in it. That’s not even touching the unnecessary dig at public institutions.

Did you go to public schools? I did. The student body is mainly uninterested, incapable, or irredeemable. Some great diamonds in the ruff to be sure. But certainly these people would excel regardless of a 1-off actual good teacher seeing as most of them are just mailing it in, like their student body. Why go to the trouble of getting a masters to waste it like this? FWIW I don’t believe teachers should need a bachelo…

It's "diamonds in the rough" not "ruff". Sorry to assume you spoke English as a first language ;-)

Re: Glass viscosity calculations debunk the myth of flow in medieval windows (2017)

#100
post #92
post #61

Earlier quoted context omitted.

Is it regarded as a failure? Teachers in public schools work part time for 25 years and get a scaling pension they “negotiated” with the politicians their union dues elected. I’d call them fantastic winners. Grifters? Sure. But certainly not losers.

My parents, both with master’s degrees, worked at least eight hours every day teaching, grading assignments, and then preparing for the following day. I would guess about ten hours on average, seeing as I was mostly left alone as a child while my parents worked over the kitchen table. Yes, they don’t teach during the summer. Their pay reflects that. I won’t even touch on personal expenditures for supplies. Grifters?!…

The article cites the BLS for other professions so why not take the BLS's word for teachers, too?

https://www.bls.gov/opub/mlr/2008/03/art4full.pdf

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