Science & Tech

How does a 3D TV work ?

3D TV, or three-dimensional television (立體電視), is a type of television that displays a three-dimensional (三維的;立體的) picture to viewers. It used depth perception (深度知覺) techniques to

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What is DNA

DNA is a short nickname for Deoxyribonucleic Acid (去氧核糖核酸). It is the genetic (基因的;遺傳訊息的) material that contains all the information about how a living thing will look and function (運作). For example,

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