One well-known hologram of that era captured in red laser light a chessboard on which pieces could be viewed from various angles as a viewer shifted position.

一幅当时著名的全息图，是用红色激光拍摄的一个棋盘，当观察者移动位置时，可以从不同的视角观察棋盘上的棋子。

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The second laser, which produces red light, then stimulates particular sites to take the second shape. This corresponds to "one" in binary code.

产生红光的第二个激光器刺激某些地方，使其呈现第二种形状，此形状对应于二进制编码中的“1”。

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To begin with, the laser palette was rather limited: helium-neon and ruby lasers emitted red light, and others produced invisible infrared.

刚开始时，激光的色彩是相当有限的：氦氖激光器和红宝石发出红光，其他激光器则产生不可见的红外光。

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The team used a prototype to demonstrate the idea, hiding centimetre-scale objects illuminated with polarised green or red laser light.

BBC: Invisibility cloaking benefits from crystal-clear idea

The second laser, which produces red light, then stimulates particular sites to take the second shape.

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