咩系相對論？

相對論就係........
簡單D講。　
當你好悶冇野做個時，你會覺得時間好長好似度日如年。
不過當你有好多野做（例如：打機），你有時會覺得時間好似過得好快，一下過左幾個鍾。
Ｅ　Ｄ就叫相對論
明唔明？

The "Theory of Relativity"(相對論) composes of "Special Relativity"(特殊相對論，又名 狹義相對論) and "General Relativity"(廣義相對論).

Special relativity is based on two basic assumptions: (i) the speed of light is independent of the motion of source and observor, and (ii) the laws of physics are the same in all inertia reference frames.

Special relativity deals with the fundamental physical quantities: time, length and mass and shows how these quantities vary with the velocity of one reference frame realtive to the other. The famous mass-energy equivalence equation E = mc^2 was published as a supplement to the Special Relativity theory.

General Relativity mainly deals with gravity. The question why there exists gravity was unanswered by Newton. General Relativity explains the origin of gravity as warpping of space near a mass. It has been shown by astronomical observation that such theory does agree with observational results.

愛因斯坦提出的，是研究時間和空間相對關係的物理學說。分狹義相對論和廣義相對論。 相對論（Principle of relativity relativism[5relEtivizEm] relativity[7relE5tiviti] theory of relativity）相對論相對論是關於時空和引力的基本理論，主要由愛因斯坦(Albert Einstein)創立，分為狹義相對論(特殊相對論)和廣義相對論(一般相對論)。相對論的基本假設是相對性原理，即物理定律與參照系的選擇無關。狹義相對論和廣義相對論的區別是，前者討論的是勻速直線運動的參照系（慣系參照系）之間的物理定律，後者則推廣到具有加速度的參照系中（非慣性系），並在等效原理的假設下，廣泛應用於引力場中。相對論和量子力學是現代物理學的兩大基本支柱。奠定了經典物理學基礎的經典力學，不適用於高速運動的物體和微觀領域。相對論解決了高速運動問題；量子力學解決了微觀亞原子條件下的問題。相對論顛覆了人類對宇宙和自然的“常識性”觀念，提出了“時間和空間的相對性”、“四維時空”、“彎曲空間”等全新的概念。狹義相對論最著名的推論是質能公式，它可以用來計算核反應過程中所釋放的能量，並導致了原子彈的誕生。而廣義相對論所預言的引力透鏡和黑洞，也相繼被天文觀測所證實。