Reason-for-banana-slips香蕉皮滑的原因演講

Reasonforbananaslipsyoumayhavelaughedatitinacartoon:Apersoniswalkingalongwhensuddenlyheorsheslipsandfallsonabananapeel.Butarebananasreallyslipperyinreallife?Scientistshavebeentryingtofindout.slips[slips]v.滑〔slip的第三人稱單數(shù)〕，滑脫，下降，〔健康狀況等〕變差同根詞：slipperyadj.滑溜的狡猾的不可靠的Backin2012,“tribologists”(摩擦學(xué)家)inJapan–KiyoshiMabuchiandothersatKitasatoUniversity〔北里大學(xué)〕inMinato–decidedtomeasurehowslipperyabananapeelis,accordingtoKarlKruszelnicki’sbookDrKarl’sShortBack&Science.Tribologylooksatfriction,aswellasmakingitlessstrongthroughlubrication,insurfacesthatmoveagainsteachother.uItwasstartedinthemid-1960sbyphysicistDavidTaborandlubricationexpertPeterJost,buthumanshavebeenusingitsideasforalongtime–forexample,whentheancientEgyptiansusedlubricanttomovegiantstonesandbuildthepyramids.Inthelate1400s,LeonardodaVincicameupwiththefirstlawsoffriction.tribologist

n.摩擦學(xué)家同根詞：friction[?fr?k??n] n.摩擦二十世紀(jì)六十年代中期lubrication[?lubr??ke??n]潤滑劑pyramid[?p?r?m?d]n.金字塔;角錐狀物vt.使…成塔尖形;使…節(jié)節(jié)建立;使…上漲vi.成金字塔狀;漸增;連續(xù)投機(jī)Oneeasywaytomeasurefrictionistheso-called〔所謂的〕“frictionalcoefficient(系數(shù))”.Thinkofablock〔阻礙〕ofleather(皮革),weighing1kg,sittingonwood.Tomoveit,youhavetopushitwithaweightof350g.Thefrictionalcoefficientofleather-on-woodistherefore〔因此〕350dividedby1,000,whichis0.35.Thelowestfrictioncanbefoundinice-on-iceandmetal-on-ice(around0.02)andthecartilage(軟骨)inyourbody’sjoints(關(guān)節(jié))(0.01).TheJapanesetribologistsmeasuredthefrictionalcoefficientofabananapeelonalinoleum(油氈)surfaceas0.07.Thiswasamazinglylow–betterthanmetal-on-metalwithoil.Usingamicroscope〔顯微鏡〕,theresearchersfoundthattherearelittlecontainers〔容器〕calledfolliclesontheinnerbananaskin–thesurfacethattouchesthefruit.vWhenyourfootweighsdownonthesefollicles〔毛囊〕,theyreleasepolysaccharides〔多糖〕(typesofcarbohydrates(碳水化合物))andprotein〔蛋白質(zhì)的〕.Thesethenmixtogetherintoagel〔凝膠〕.Thankstothebumps〔n.隆起，凸起〕onthebananaskin,thisgel(膠體)comesbetweenthebananaandthefloor,leadingtoverylowfriction.Thetribologistsalsomeasuredthefrictionalcoefficientsofafewotherfruits.Applepeelwasnotsoslipperyat0.1,whiletangerine(柑橘)andcitron(similartoalemon)eachcameinaround0.2.Fortheirinterestingyetsillyresearch,theJapanesetribologistswonthelight-heartedIgNobelPrizeinPhysicsin2014.2014年搞笑諾貝爾獎(jiǎng)的物理學(xué)獎(jiǎng)2014年

物理獎(jiǎng)：日本研究學(xué)者獲得物理學(xué)獎(jiǎng)，他的研究課題是：當(dāng)人踩到地上的香蕉皮的時(shí)候，鞋底和香蕉皮之間的摩擦力。

神經(jīng)學(xué)獎(jiǎng)：獲獎(jiǎng)?wù)叽缶植繛槿A裔，研究課題為“當(dāng)人們?cè)诳久姘锟吹揭d基督的臉的時(shí)候，大腦內(nèi)會(huì)有何種反響”。

心理學(xué)獎(jiǎng)：晚睡的人更加自我欣賞。

公共衛(wèi)生獎(jiǎng)：養(yǎng)貓是否對(duì)人心理有影響。

生物學(xué)：狗的排便時(shí)使自己與地球的磁場(chǎng)相近。

藝術(shù)獎(jiǎng)：當(dāng)人們觀看拙劣的畫作時(shí)，用激光照射他

們的手部測(cè)試人們所感受到痛感程度。

經(jīng)濟(jì)學(xué)獎(jiǎng)：由意大利政府國家統(tǒng)計(jì)委員會(huì)獲獎(jiǎng)，理

由是“通過向自愿交易的色情業(yè)、