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淺談虛擬現實(shí)技術(shù)的物理實(shí)驗模擬
摘要
如今，我們已經(jīng)能夠在計算機中以3維的方式真實(shí)地模擬現實(shí)世界的物理實(shí)驗。這意味著(zhù)，我們完全不用那些笨重、昂貴的設備，就可以隨時(shí)做你想做的實(shí)驗。這其中的關(guān)鍵技術(shù)是VR。
VR（虛擬現實(shí)）是計算機應用中快速發(fā)展的1種技術(shù)。用這種技術(shù)，人們可以用3維的形狀和場(chǎng)景描述身邊的世界。它有著(zhù)廣泛的適應性。作為VR技術(shù)中的1種，VRML（虛擬現實(shí)模型語(yǔ)言）由于它的簡(jiǎn)便易學(xué)，擁有著(zhù)大量的用戶(hù)群。它是1種在網(wǎng)頁(yè)上的國際化3維描述語(yǔ)言標準。
在這份報告中，我將展示VRML語(yǔ)言及用該語(yǔ)言編寫(xiě)物理力學(xué)虛擬實(shí)驗的方式。下面是關(guān)于選題的更詳細的說(shuō)明。
所選的第1個(gè)實(shí)驗是關(guān)于平拋運動(dòng)。通過(guò)路徑上1些點(diǎn)的坐標，我們可以計算出小球離開(kāi)軌道時(shí)的初速度。
第2個(gè)實(shí)驗是單擺。通過(guò)對測出1次全振動(dòng)花費的時(shí)間，我們可以算出重力加速度的值。
最后1個(gè)實(shí)驗是自由落體運動(dòng)。
所有這些將用VRML實(shí)現，其中JavaScript語(yǔ)言控制了其大部分功能。
關(guān)鍵詞：虛擬現實(shí) 虛擬現實(shí)模型語(yǔ)言 物理 力學(xué)
Abstract
Now, we can simulate the experiments of physics in 3-D mode in computer like it is in the real world. It means we can do the experiment without those heavy, expensive equipments just at any moment you want. The key technology is VR.
VR（Virtual Reality）is a fast developing technology in the application of computer. With this technology, people can describe the world around in 3-D shapes and scenery. It has very broad applicability as one of the VRs technologies. VRML (the Virtual Reality Modeling Language) has plenty of users, as it is very easy to learn. It is an international standard in 3-D description language on the World Wide Web.
In this report, I will show the language VRML and the way that I use it to build a 3-D scene in mechanics experiment of physics. Below this are the explication of the theme I chose.
The first production chosen is about horizontal projectile motion[7]，from the coordinates of the points in the path，we might come to the conclusion of the original speed that the ball leaves from the track。
The topic of the second one is single pendulum.After taking count of the time it finishes a complete vibration，we can get the value of the acceleration due to gravity.
The last one is about the free fall motion..All above I will achieve in VRML，in which language JavaScript controls a majority of function.
Keywords：VR，VRML，physics，mechanics
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