The Basic Principles Of هوک
Wiki Article
He also collaborated with Wren on the design of St Paul's Cathedral; Hooke decided the ideal shape of an arch is definitely an inverted catenary and thence that a round series of these types of arches would make a super shape for your cathedral's dome.[109]
هوک در سن ۱۸ سالگی وارد دانشگاه آکسفورد شد و به زودی استعداد خود را در زمینهٔ مکانیک به جامعهٔ علمی آن زمان از جمله تامس ویلیس و رابرت بویل ثابت کرد. در هنگامی که بویل بر روی قانون مشهور خود کار می‌کرد، هوک به عنوان دستیار با او همکاری داشت.
جان هوک مسئول مدرسهٔ محلی نیز بود، بنابراین می‌توانست شاید به دلیل ضعف جسمی فرزندش حداقل نیمی از دروس را در خانه به رابرت تعلیم دهد. او یک سلطنت‌طلب بود و هنگامی که به جزیرهٔ وایت فرار کرد یقیناً عضو گروهی بود که برای ادای احترام به چارلز یکم به دیدارش رفتند. رابرت نیز، به عنوان یک سلطنت‌طلب وفادار بزرگ شد .
In 1660, Hooke found out the law of elasticity that bears his name and describes the linear variation of stress with extension within an elastic spring. Hooke first explained this discovery within an anagram "ceiiinosssttuv", whose solution he released in 1678 as Ut tensio, sic vis ("Because the extension, Therefore the force").[103] His Focus on elasticity culminated in his advancement from the stability spring or hairspring, which for The very first time enabled a conveyable timepiece – a watch – to keep time with reasonable precision.
In keeping with Stephen Peter Rigaud, Clairaut wrote: "The example of Hooke Which of Kepler [serves] to point out what a distance There is certainly amongst a truth of the matter that is definitely glimpsed and also a reality which is demonstrated".[p][one hundred thirty] I. Bernard Cohen stated: "Hooke's assert to the inverse-square law has masked Newton's much more elementary personal debt to him, the Examination of curvilinear orbital motion. In requesting an excessive amount credit score, Hooke successfully denied to himself the credit score due him for a seminal notion".[131]
در نوامبر سال ۱۶۷۹، هوک به‌طور گسترده شروع به نامه‌نگاری با نیوتون کرد (که متن آن‌ها منتشر شده‌است). هدف آشکار هوک از این کار این بود که به نیوتن اطلاع دهد که از وی خواسته شده‌است که مکاتبات «انجمن سلطنتی» را تنظیم نماید، از این‌روست که هوک از اعضا می‌خواهد تا پژوهش‌های خود یا دیدگاهشان در مورد پژوهش‌های سایر اعضا را به وی اطلاع دهند. وی به منظور تحریک کردن علاقهٔ نیوتون از او خواست هوک تا نظر خود را در مورد مسائل مختلف بیان دارد.
mg=−k Δx→m=∣g−kΔx∣
As to his Man or woman he was but despicable, staying incredibly crooked, tho' I've read from himself, and Many others, that he was strait until about 16 Yrs of Age when he first grew awry, by Recurrent practising, which has a Turn-Lath ... He was usually incredibly pale and lean, and laterly nothing but Skin and Bone, using a Meagre Component, his Eyes gray and total, with a sharp ingenious Glimpse while young; his nose but skinny, of the moderate top and length; his Mouth meanly wide, and upper lip slim; his Chin sharp, and Forehead huge; his Head of the middle dimension.
متن و دلنوشته های احساسی و زیبا برای گربه + عکس پروفایل زیبا برای گربه ام
Hooke's job for the Royal Culture was to display experiments from his personal methods or with the suggestion of users. Among his earliest demonstrations ended up conversations of the nature of air along with the implosion of glass bubbles that were sealed with enclosed warm air.[fifty seven] He also demonstrated that a Pet can be stored alive with its thorax opened, furnished air was pumped out and in of its lungs.[86][l] He famous the difference between venous and arterial blood, and so demonstrated that the Pabulum vitae ("food items of everyday living")[m] and flammae [flames] have been exactly the same thing.
دانلود آهنگ علیرضا قربانی یازده ماه و بیست و نه روز و چند هزار ساعت
Montagu located The 2 contemporaneous published descriptions of Hooke's physical appearance agree with each other but that neither matches the portrait in Time.[one hundred eighty]
سخنرانی هوک در ۱۶۷۰ در کالج گرشام، این مسئله را روشن ساخت که قانون گرانش در مورد «تمام اجرام آسمانی» صدق می‌کند و این اصول را مطرح کرد که نیروی جاذبه با افزایش فاصله کاهش می‌یابد و در صورت عدم وجود چنین نیرویی، اجسام در خط مستقیم حرکت می‌کنند.
۱ A rudimentary prototype of internal combustion piston motor. ۲ An early sensible variety of فراتاب as well as a precursor to both equally the fashionable اسلاید پروژکتور plus the فیلم پروژکتور.