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Metric Measurement
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Nov 18, 2023 11:49:25   #
Stephan G
 
BebuLamar wrote:
I show the kids how to answer many geometric questions with multiple choices by drawing the figure and use the ruler.


Did you use the trick of using a map, two sticks, two wells, two triangles, and the sun to work out the circumference of the earth?

My college Calc prof spent the first two days showing how Einstein could have skipped five mathematical steps when working on his E=MC Squared concept. (It was the prof's thesis! Don't ask me, I lost my notes over a half century ago.)

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Nov 18, 2023 11:56:27   #
BebuLamar
 
Stephan G wrote:
Did you use the trick of using a map, two sticks, two wells, two triangles, and the sun to work out the circumference of the earth?

My college Calc prof spent the first two days showing how Einstein could have skipped five mathematical steps when working on his E=MC Squared concept. (It was the prof's thesis! Don't ask me, I lost my notes over a half century ago.)


No! I wouldn't know how to do that. But for example if you have a right triangle and know the 2 perpendicular sides you can find the hypertenuse by drawing it and measure it. I want them to be able to solve a problem by whatever mean. In life it's more important that you can solve the problem.

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Nov 18, 2023 12:45:11   #
jlg1000 Loc: Uruguay / South America
 
Stephan G wrote:
Did you use the trick of using a map, two sticks, two wells, two triangles, and the sun to work out the circumference of the earth?

My college Calc prof spent the first two days showing how Einstein could have skipped five mathematical steps when working on his E=MC Squared concept. (It was the prof's thesis! Don't ask me, I lost my notes over a half century ago.)


I've heard something about that as graduate student... What was your professor's name?

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Nov 18, 2023 13:11:35   #
Stephan G
 
jlg1000 wrote:
I've heard something about that as graduate student... What was your professor's name?


Off the top of my head, something like "Duesenberg".

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Nov 20, 2023 21:17:15   #
bikinkawboy Loc: north central Missouri
 
Stephan G wrote:
Did you use the trick of using a map, two sticks, two wells, two triangles, and the sun to work out the circumference of the earth?

My college Calc prof spent the first two days showing how Einstein could have skipped five mathematical steps when working on his E=MC Squared concept. (It was the prof's thesis! Don't ask me, I lost my notes over a half century ago.)


After Thomas Edison failed about 40 times before successfully finding that tungsten made great light bulb filaments, I’m sure someone else said that he could have saved 40 failures had he only tried tungsten the first time. Hindsight is always 20-20. I suspect your professor had perfect hindsight as well.

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Nov 20, 2023 21:18:21   #
jlg1000 Loc: Uruguay / South America
 
bikinkawboy wrote:
After Thomas Edison failed about 40 times before successfully finding that tungsten made great light bulb filaments, I’m sure someone else said that he could have saved 40 failures had he only tried tungsten the first time. Hindsight is always 20-20. I suspect your professor had perfect hindsight as well.


He did not use tungsten but vegetal carbon fibers.

Tungsten requires a very complex technology and was mastered after Edison's death.

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