Here's a look at the science behind the glass.

现在让我们一窥这种玻璃背后的科学秘密。

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Now science seems to back the glass half-full approach.

现在的科学看上去更接近半瓶水满的状态。

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It works by shining a hollow laser beam around small glass particles, as Inside Science explains.

它使用中空的激光波束移动微小的玻璃粒子。

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While gadget hounds delighted in the new iPad, materials-science geeks lamented the continuing dominance of power-hungry liquid-crystal displays that use heavy pieces of glass.

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