He also collaborated with Wren on the look of St Paul's Cathedral; Hooke established The perfect condition of the arch is undoubtedly an inverted catenary and thence that a round series of this sort of arches helps make a perfect shape to the cathedral's dome.[109]

Nevertheless am I not beholden to him for virtually any mild into that small business ... but only for the diversion he gave me from my other studies to Feel on these things & for his dogmaticalness in producing as if he experienced observed the movement in the Ellipsis, which inclined me to test it.[129]

In 2019, Larry Griffing, an associate professor in Biology at Texas A&M College, proposed that a portrait by Mary Beale of an unfamiliar sitter and referred to as Portrait of a Mathematician – is really of Hooke, noting the Bodily options of your sitter from the portrait match Hooke's. The figure points to a drawing of elliptical movement that seems to match an unpublished manuscript developed by him. The portray also incorporates an orrery depicting the same basic principle. According to Griffing, properties A part of the graphic are of Lowther Castle, now in Cumbria, and its Church of St Michael.

On 8 July 1680, Hooke observed the nodal designs linked to the modes of vibration of glass plates. He ran a bow together the edge of a flour-covered glass plate and noticed the nodal designs arise.

I will explain a system of the globe pretty distinctive from any however received. It is Started on the subsequent positions. one. That each one the heavenly bodies have not merely a gravitation in their sections to their unique good centre, but that they also mutually catch the attention of each other in just their spheres of motion. two. That all bodies having a easy movement, will keep on to maneuver inside of a straight line, Except regularly deflected from it by some extraneous power, resulting in them to describe a circle, an ellipse, or Several other curve.

مثال ۱: با استفاده از قانون هوک و یک فنر که از قانون هوک پیروی می‌کند، چگونه می‌توان جرم یک جسم را محاسبه کرد؟

خاطره‌انگیزها مرور نقدهای قدیمی و واکنش‌ها به فیلم جریان‌ساز احمدرضا درویش

بیشترین سرعتی که این جسم تجربه می‌کند، چه قدر است (از نیروی مقاومت هوا صرف نظر کنید)؟

صفحه‌هایی که از جعبه اطلاعات فیلم با پارامترهای خالی استفاده می‌کنند

صفحه‌هایی برای ویرایشگرانی که از سامانه خارج شدند بیشتر بدانید مشارکت‌ها

برای دسترسی به نسخه آنلاین مطلب، استفاده از کلیه امکانات آن و داشتن تجربه کاربری بهتر اینجا کلیک کنید.

تک‌چهره‌ای که گمان می‌رود هوک باشد. (۱۶۸۰) در سال ۲۰۰۳، ریتا گریر که نقاش چهره‌های تاریخی است، با هزینهٔ خود پروژه‌ای برای ایجاد یادبودی از هوک آغاز کرد.

مُهری که هوک از آن استفاده می‌کرد به شکل سر یک مرد بود که برخی معتقدند احتمالاً تصویر خود هوک را نشان می‌دهد.

One of many observations in Micrographia is of fossil wood, the microscopic framework of which Hooke as compared to that of everyday Wooden. This led him to conclude that fossilised objects like petrified wood and fossil shells like ammonites were the remains of residing things which had been soaked in mineral-laden petrifying hook h2o.[143] He believed that these kinds of fossils furnished trusted clues with regards to the historical past of daily life on this planet and, Regardless of the objections of present-day naturalists like John Ray – who identified the strategy of extinction theologically unacceptable – that occasionally they might characterize species that experienced develop into extinct through some geological catastrophe.