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體和落體的研究，提出慣性定律并用以解釋地面上的物體和的運(yùn)動(dòng)。17世紀(jì)末提出力動(dòng)的三條基本定律，使經(jīng)典力學(xué)形成的理論。根據(jù)三條定律和萬有引力定律成功地解釋了地球上的落體運(yùn)動(dòng)規(guī)律和行星的運(yùn)動(dòng)軌道。 頭的便是，他是人類歷個(gè)國(guó)葬的自然科學(xué)家。他的墓地位于威斯敏斯特教堂正面大廳的，也就是中殿(ne)那里，墓地上方聳立著一尊的雕像，其石像倚坐在一堆書籍上，雙手沒有合十。身邊有兩位天使，還有一個(gè)巨
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以，力是那樣自然地反映到人的意識(shí)中來的。但是人們從直覺意識(shí)到“力”的概念到“力”的嚴(yán)格科學(xué)定義，卻經(jīng)歷了長(zhǎng)期的斗爭(zhēng)。在，力的概念在物理科學(xué)中提出以前。首先在哲學(xué)中發(fā)生爭(zhēng)論。古希臘的宇宙論學(xué)派的泰勒斯 是說：“若物體保持靜止或勻速直線運(yùn)動(dòng)狀態(tài)，它所受到的力一定是平衡力（或不受力）�！倍ζ胶鈼l件1.力的大小相同；2.方向相反；3.作用（點(diǎn)）在同一直線上；4.作用（點(diǎn)）在同一物體上。作用使物體（）保持靜止或勻速直線
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[4]光學(xué)成就曾致力于顏色的現(xiàn)象和光的本性的研究。1666年，他用三棱鏡研究日光，得出結(jié)論：白光是由不同顏色（即不同波長(zhǎng)）的光混合而成的，不同波長(zhǎng)的光有不同的折射率。在可見光中，紅光波長(zhǎng)長(zhǎng)，折射率；紫光波長(zhǎng)短，折 于合外力產(chǎn)生的加速度。適用范圍：①只適用于低速運(yùn)動(dòng)的物體（與光速比速度較低）。②只適用于宏觀物體，第二定律不適用于微觀原子。③參照系應(yīng)為慣性系。兩個(gè)物體之間的作和反作，在同一直線上，大小相等，方向相
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，而是形成了一套研究事物的論體系，提出了幾條論原理。在《原理》一書中集中體現(xiàn)了以下幾種科學(xué)：①實(shí)驗(yàn)——理論——應(yīng)用的。在《原理》序言中說：“哲學(xué)的全部任務(wù)看來就在于從各種運(yùn)動(dòng)現(xiàn)象來研究各 生中許多重要發(fā)現(xiàn)和研究成果，其中包括上述關(guān)于物體運(yùn)動(dòng)的定律。他說，該書“所研究的主要是關(guān)于重、輕流體抵抗力及其他吸引運(yùn)動(dòng)的力的狀況，所以我們研究的是自然哲學(xué)的數(shù)學(xué)原理�！痹摃鴤魅牒蟆�
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并且把時(shí)空、化，企圖把粒子說外推到一切領(lǐng)域（如連他自己也不能解釋他所發(fā)現(xiàn)的“環(huán)”），這些都是他的致命傷。在看到事物的“原因”“不一定是機(jī)械的”時(shí)，提出了“這些事情都是這樣地井井有條……是否好像有一位 他們同米的換算關(guān)系如下：1光年=9.46PM（約）1PM=10×10^15m1Mm=1×10^6m1km=1×10^3m1dm=1×10^(-1)m1cm=1×10^(-2)m1mm=1×10^(-3)m1dmm=1×10^(-4)m1cmm=1×10^(-5)m1μm=1×10^(-6)m1nm=1×10^(-9)m1pm=1×10^(-12)m1fm=1
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反響。學(xué)說在的傳播決不只是影響了學(xué)術(shù)界，喚醒了人們對(duì)于科學(xué)真理的認(rèn)識(shí)。更重要的是，也為資產(chǎn)階級(jí)改革派發(fā)起的戊戌變法（1898年）提供了一種。這個(gè)運(yùn)動(dòng)的主將康有為、梁?jiǎn)⒊妥T嗣同等人，無一例外地從學(xué)說 不管二力的性質(zhì)如何。作與反作具有同時(shí)性，同時(shí)產(chǎn)生，同時(shí)變化，同時(shí)消失；二力平衡不具有這一特點(diǎn)。二力平衡編輯一個(gè)物體受到兩個(gè)力的作用，保持靜止?fàn)顟B(tài)或勻速直線運(yùn)動(dòng)狀態(tài)，這兩個(gè)力是一對(duì)平衡力，叫二力平衡。也就