David
811 posts


1911年,一个叫查尔斯·凯特林的俄亥俄州工程师解决了一个杀人的问题。
那个年代汽车没有电启动。
要发动一辆车,你得站在车头,拿一根铁摇柄插进发动机里,用力摇。
摇柄随时可能反弹——发动机回火的时候,铁柄会猛地反转,打断你的手腕,甚至砸碎你的下巴。
1910年冬天,凯迪拉克的创始人亨利·利兰的一个朋友,拜伦·卡特,在底特律街头看到一个女人的车熄了火。
他帮她摇车。
摇柄反弹,打碎了他的下颌骨。
几周后,卡特因为并发症死了。
利兰崩溃了。他发誓要找到一种不用手摇就能启动汽车的方法。
他找到了凯特林。
凯特林不是汽车行业的人。他之前在国家收银机公司工作,发明了电动收银机。
利兰问他:"你能不能做一个用电启动汽车发动机的马达?"
所有工程师都说不可能。因为按照当时的物理学常识,一个能推动汽车发动机的电动马达,体积至少得跟发动机一样大。塞不进引擎盖。
凯特林说:"谁告诉你马达必须连续运转的?"
所有人都愣了。
他解释道:启动发动机只需要转三四圈。三四圈只需要几秒钟。一个小马达连续跑一个小时会烧掉,但让它只跑三秒钟,完全撑得住。
你不需要一个能永远运转的大马达。你需要一个只拼三秒钟的小马达。
1912年,凯迪拉克装上了凯特林发明的电启动系统。
世界上第一辆不需要手摇启动的量产汽车。
从此以后,女人可以独自开车了。老人可以开车了。任何人上车、转钥匙、走人。
亨利·福特的妻子克拉拉当时开的就是一辆凯迪拉克,不是福特。
因为福特的Model T直到1919年还在用手摇。
有人问凯特林为什么别的工程师想不到这个方案。
他说:
"因为他们先去查了教科书。 教科书说,马达的功率必须匹配持续负载。 他们被'持续'这两个字困住了。 没人想过,有些问题只需要三秒钟的答案。"
凯特林后来成了通用汽车的研发主管,拥有超过一百八十项专利。
他把自己的座右铭挂在实验室墙上,只有一句话:
"这个问题还没被解决, 是因为它还没被正确地提出来。"
中文

David retweetledi

好了,我帮你们提前悟道了。以后我买的票,你们晚几天买。我卖的票,你们晚几天卖。这样估计想穷都难了,听懂掌声😯
妞姐勇闯缅A冲冲冲 股市 财经@niujie_gg
关于我在推上发过推文让你们建仓的票现在是这样的。 格尔软件,今天还加仓了~利空落地,看看会不会继续放量加速。 金龙羽,没拿了。 岭南,没拿了。 贝岭,没拿了。 国芳,没拿了。 剩几个手里每天BBBBSSSS的票我就不发了,因为我不一定是每天发推你们跟不上盘中的操作~你们就做格尔软件吧慢慢建仓。
中文
David retweetledi

🚨 The CCP’s “Unrestricted War” — Now a Movie 🚨
🔝 Maybe we’ve all heard about the CCP’s “Unrestricted War.” But have you ever watched a movie with exactly that title?
🎦 In the newly released political thriller The Unrestricted War, my followers may notice many familiar scenes and stories: the early days of the COVID-19 outbreak in Wuhan, China; Dr. Li Wenliang, who was arrested for posting a warning about the deadly virus in a private chat group; Falun Gong practitioner Fang Bin, who filmed the now-famous “eight bodies in five minutes” video (you can watch it below, under the trailer of this movie); and PLA general and virologist Chen Wei, who took control of the P4 lab at the Wuhan Institute of Virology as soon as the virus began to spread—and managed to produce a vaccine as early as February 26, 2020.
😉 You might even catch glimpses of what I did during the early outbreak of COVID. (If you spot it, let me know in the comments! If you don’t, it won’t affect your enjoyment of the movie at all.)
🔥This is an incredibly engaging and daring film that exposes the CCP’s “Unrestricted War” against the entire world, based on true events from early 2020. The Wuhan pandemic killed 7 million people worldwide (or more, if we include China’s underreported death toll). Yet, until now, no filmmaker has dared to tackle this politically sensitive and perhaps politically incorrect topic.
😿That’s why Yan Ma, the Canadian director of this film, faced personal harassment from the CCP. Some of his family members in China lost their income, and just three days before filming began, one of the lead actors dropped out after receiving threats from the CCP’s United Front operations in Canada.
😠It didn’t stop there. When the film was first set to premiere in Canada, the event was abruptly cancelled just one day before, due to interference from the Chinese government.
😧The irony is striking: the Canadian filmmaker himself experienced the CCP’s “Unrestricted War” firsthand, simply for making a movie called Unrestricted War.
🚨As a result, Yan Ma decided not to release the film in U.S. theaters. Instead, it is available on the @GanJingWorld GJW+ streaming platform:
gjw.us/jenniferunrest…
🙋Make sure you watch it—and support Yan Ma, along with many others, in their fight against the CCP’s “Unrestricted War” on all of us.
Inconvenient Truths — Jennifer Zeng Reports@jenniferzeng97
8 bodies in 5 minutes! More are lying inside &#武汉肺炎 to be moved out. Somebody secretly shot this video from No. 3 Hopital in #Wuhan during #coronarovirus #武汉肺炎 某網友秘密探訪武漢第三醫院,五分钟功夫就見到八具屍體拉走去火化場,而且里面还有。
English

@TrumpRealDaily The Dow Jones Industrial Average plummeted by over 2000 points in a day, do you still have the face to sit in the position of president?
English

@TrumpRealDaily It is now clear whether you are colluding with Russia.
English

















