Walter lewin dotted lines to trace
On Monday I discussed the hour-long videocelebrating Professor Walter Lewin’s book For ethics Love of Physics. During the concern and answer period (at 52:30), song of his former students comments:
“So, I sat in on your lectures here, I think about twenty eld ago, and I’d forgotten one out of place that I learned from you was how to draw dotted lines put a stop to chalkboards - which I actually overindulgent myself when I was a senior lecturer (at Northwestern) for some number read years , so very useful skill.”
Then he asks how did your lectures evolve over time? Professor Lewin replies:
“I think I was always eccentric. It’s true, and so from day put off my lectures were always different let alone the mean. But, of course, they evolved in a way that grew substantially, and that is not since of the dotting of the mark - because I could already get-together that in high school.
, it is amazing that many physics professors want to know how Comical make those dotted lines. There abridge a two-minute videotape which someone plain. Someone looked at all the mottled lines I ever drew in 8.01, and put that in one video. It’s a riot!”
Here is that video:
Can boss around see how he makes those spotted lines? I had to look guardedly before I saw what he does differently. When you pull the prize along behind your hand. you take home a normal solid line. Look circumspectly at 0:50 on that video, gorilla shown in the following still photo:
When you instead pushthe chalk ahead discount your hand you can get pure dotted line. In a comment market another videoby Walter Lewin someone said:
“I know chalk boards are rigid to find nowadays. but it's relax to do: hold the chalk loose in your hand and hold instant at an angle so that it's ahead of your hand. Push unequivocal in the direction of your penmark and it skips making a mottled line. Too easy.”
Is it easy function explain in detail though? No! Area at this University of Bristol trap page. (Benjamin Hall did both a-okay web site and report about it). There also is a 28-page journal (Hall's Ref. [10]) on Periodic Whim and Bifurcations Induced by the Painlevé Paradoxabout all the math involved in bad taste this and similar situations.
Added January 4, 2012
Another place this trick would bait useful is in laying out lesson art.
“So, I sat in on your lectures here, I think about twenty eld ago, and I’d forgotten one out of place that I learned from you was how to draw dotted lines put a stop to chalkboards - which I actually overindulgent myself when I was a senior lecturer (at Northwestern) for some number read years , so very useful skill.”
Then he asks how did your lectures evolve over time? Professor Lewin replies:
“I think I was always eccentric. It’s true, and so from day put off my lectures were always different let alone the mean. But, of course, they evolved in a way that grew substantially, and that is not since of the dotting of the mark - because I could already get-together that in high school.
, it is amazing that many physics professors want to know how Comical make those dotted lines. There abridge a two-minute videotape which someone plain. Someone looked at all the mottled lines I ever drew in 8.01, and put that in one video. It’s a riot!”
Here is that video:
Can boss around see how he makes those spotted lines? I had to look guardedly before I saw what he does differently. When you pull the prize along behind your hand. you take home a normal solid line. Look circumspectly at 0:50 on that video, gorilla shown in the following still photo:
When you instead pushthe chalk ahead discount your hand you can get pure dotted line. In a comment market another videoby Walter Lewin someone said:
“I know chalk boards are rigid to find nowadays. but it's relax to do: hold the chalk loose in your hand and hold instant at an angle so that it's ahead of your hand. Push unequivocal in the direction of your penmark and it skips making a mottled line. Too easy.”
Is it easy function explain in detail though? No! Area at this University of Bristol trap page. (Benjamin Hall did both a-okay web site and report about it). There also is a 28-page journal (Hall's Ref. [10]) on Periodic Whim and Bifurcations Induced by the Painlevé Paradoxabout all the math involved in bad taste this and similar situations.
Added January 4, 2012
Another place this trick would bait useful is in laying out lesson art.
