{"id":530,"date":"2026-03-13T21:12:52","date_gmt":"2026-03-14T01:12:52","guid":{"rendered":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/?p=530"},"modified":"2026-03-13T21:12:52","modified_gmt":"2026-03-14T01:12:52","slug":"class-notes-week-of-3-2-2026-posted-by-abby","status":"publish","type":"post","link":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/2026\/03\/13\/class-notes-week-of-3-2-2026-posted-by-abby\/","title":{"rendered":"Class Notes &#8211; Week of 3\/2\/2026 (Posted by Abby)"},"content":{"rendered":"<p><span style=\"font-weight: 400\">3\/2\/2026<\/span><\/p>\n<p><b>Demonstration: strength of materials\u00a0<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">As crank is turned, tension is placed on the wire<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">A load cell is placed below to measure the force of the pull on the crosshead, measuring the tension in the wire \u2192 Measuring force and displacement<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Device measures \u201cstress and strain,\u201d which is similar to force and displacement<\/span>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Stress is force per unit area<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Strain is how much material deforms fractionally compared to its original form<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">7.8 x 10^-4 in^2 is original measurement made with calipers<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Wire snaps at force of approximately 33 pounds \u2192 means 42300 pounds per square inch can be endured given calculations\u00a0<\/span>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">High strength steel can endure at much as 200,000 pounds per square inch\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">When wire is plastically deforming, graph showing elasticity is no longer displaying a straight line \u2192 eventually reaches crest showing the maximum force of stretch that steel wire can endure<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">This applied to suspension bridge cables and spokes of a wheel<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Wrought iron and other brittle materials snap rather than stretch\u00a0<\/span><\/li>\n<\/ul>\n<p><b>Zen and the art of motorcycle maintenance\u00a0<\/b><\/p>\n<p><b>Chapter 22<\/b><\/p>\n<p><span style=\"font-weight: 400\">Motorcycle references: odometer, Harley High-Miler, and starter button (no need to discuss these)<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Phaedrus has breakthrough about quality<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Talks about Poincare and how science changed: science was no longer exact, but became \u201capproximate\u201d\u00a0<\/span>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Absolute substance arises as idea of matter and intimatter: can convert matter into energy and vice versa<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Absolute magnitude relates to uncertainty principle \u2192 again, showing how science is becoming approximate\u00a0<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Einstein&#8217;s principle of equivalence shows that space is curved and light is curved\u00a0<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Euclid and Reimann geometry creates discussion about what geometry is \u201cright\u201d<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Phaedrus claims that him and Poincare compliment each other in filling in gaps<\/span>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Claims Poincare selects science and interpretation matching his own idea of beauty<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Convenience of mathematical and scientific models makes sense given the application<\/span>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">This ties together classical and romantic<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>Chapter 23<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Displays how narrator feels trapped inside body he has no control over, as if someone else is controlling him<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Feels 2 people living in the same body, with one of these people being taken away from his child<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Could suggest that the narrator has \u201cgone too far\u201d in his pursuit of Phaedrus<\/span><\/li>\n<\/ul>\n<p><b>Chapter 24<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Explaining \u201cstuckness\u201d refers back to the narrator rather than referring to Phaedrus, suggesting that he is aware of his former closeness to Phaedrus<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">3\/4\/2026<\/span><\/p>\n<p><b>Demonstration: spark tester<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Spark tester: one one end is spark plug, connected to in-line tester connected to cable\u00a0<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">If there is a proper spark, there should be an orange spark in in-line tester<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">When 80 volts is hit when the apparatus is hooked up to power supply the tester should light up<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">When 80 volts is hit, the light became orange\u00a0<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">When voltage is dropped any less, the light goes off\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Light contains neon gas discharge, needing from 60-80 volts to light\u00a0<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">When there is spark, current is able to flow through: one side of plug is at ground potential, the other is at high voltage\u00a0<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Bud light sign turns on when connected to power source\u00a0<\/span>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">red\/orange part is neon \u2192 each gas has a characteristic color\u00a0<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">At certain angles with a diffraction grading, can see spectrum of color \u2192 same emission derived from fireworks\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>Zen and the art of motorcycle maintenance: chapter 24<\/b><\/p>\n<p><span style=\"font-weight: 400\">Motorcycle terms: stuck screw analogy is used<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Demonstration: screw extractors serve to drill pilot hole into screw, then jaw extractor and take screw out\u00a0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">Content:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Claims solution for people is caring and having connection to tasks \u2192 passion is imperative when completing a task\u00a0<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Claims scientific method does not contain hypothesis, creating idea that baseline knowledge is necessary<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Gives advice to chris for writing letter to his mother: to optimize quality, he suggests for Chris to write down all of his thoughts at once, and organize later \u2192 illustrates his explanation of stuckness<\/span><\/li>\n<\/ul>\n<p><b>Zen and the art of motorcycle maintenance: chapter 25<\/b><\/p>\n<p><span style=\"font-weight: 400\">Motorcycle terms: N\/A<\/span><\/p>\n<p><span style=\"font-weight: 400\">Content:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Claims technology cannot be separated from art<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Starts discussing zen- ruminating combines classical and romantic by placing thought into both<\/span><\/li>\n<\/ul>\n<p><b>Zen and the art of motorcycle maintenance: chapter 26<\/b><\/p>\n<p><span style=\"font-weight: 400\">Motorcycle terms: overhauling an engine means tuning up the entire machine\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Welders: there are different types of welders, used to merge materials via melting with high current and low voltage within an inner gas chamber containing rare gases (ie argon, neon, xenon, etc) to prevent rusting.\u00a0<\/span>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">A piece of metal has resistance; the amount of resistance increases reciprocally with cross-sectional area\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">Content:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Chapter primarily discusses gumption traps &#8211; gumption traps are phenomena that get in the way of the drive to continue a task\u00a0<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Internal and external gumption traps<\/span>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Internal is more emotional side of traps \u2192 called hang-ups, where someone is getting in their own way<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">External are environment-dependent \u2192 called setbacks\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Monkey getting hand stuck in jar\u00a0 of rice scenario &#8211; can get more value through effort than giving up\u00a0<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Greek concept \u201carite\u201d relates to quality discussion<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>3\/2\/2026 Demonstration: strength of materials\u00a0 As crank is turned, tension is placed on the wire A load cell is placed below to measure the force of the pull on the crosshead, measuring the tension in the wire \u2192 Measuring force and displacement Device measures \u201cstress and strain,\u201d which is similar to force and displacement Stress &hellip; <a href=\"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/2026\/03\/13\/class-notes-week-of-3-2-2026-posted-by-abby\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Class Notes &#8211; Week of 3\/2\/2026 (Posted by Abby)&#8221;<\/span><\/a><\/p>\n","protected":false},"author":7321,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-530","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/wp-json\/wp\/v2\/posts\/530","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/wp-json\/wp\/v2\/users\/7321"}],"replies":[{"embeddable":true,"href":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/wp-json\/wp\/v2\/comments?post=530"}],"version-history":[{"count":1,"href":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/wp-json\/wp\/v2\/posts\/530\/revisions"}],"predecessor-version":[{"id":531,"href":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/wp-json\/wp\/v2\/posts\/530\/revisions\/531"}],"wp:attachment":[{"href":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/wp-json\/wp\/v2\/media?parent=530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/wp-json\/wp\/v2\/categories?post=530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/commons.princeton.edu\/58-tiger-cub-2\/wp-json\/wp\/v2\/tags?post=530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}