Detectors in the U.S. had recorded waves three times since 2015 but only as physical ripples, never optically.

自2015年以来，美国的探测器已经三次捕捉到了引力波，但都物理波纹，没能从光学上捕捉到。

See-through panels contain Optically Variable Devices — holographic-style images that are hard to copy, or take a photo of.

明嵌板包含光学可变图案即难以复制或摄像的全息风格图像。

The ideal e-skin should be ultra-sensitive, self-powered, conformal to human skin, and optically transparent for visual or aesthetic purposes.

理想的电子皮肤应灵敏、自供电、符合人体皮肤的形态的，并在视觉或美学目的上具有光学明性。

But it is what is optically the right thing to say.

但这在视觉上正确的说法。

No optically variable ink, much easier to duplicate, and it's still legal currency.

没有光变油墨 更容易伪，还可以合法流通。

Printed on plastic, it incorporates for the first time anywhere this Optically Variable Device which takes on a different appearance depending on the angle at which you view it.

在塑料上打印的图案首次全面使用了光变图像技术，这样根据你观看的角度不同，图像会呈现各种样子。

To date the new artifacts, the team used a technique called optically stimulated luminescence, or OSL, which reveals the last time a mineral was exposed to sunlight.

迄今为止，团队使用了一种称为光激发光 (OSL) 的技术来确定新人工制品的日期， 技术揭示了矿物最后一次暴露在阳光下的时间。

In the old days before animation software, title sequences were shot " optically" — which is just another way of saying they were made manually, frame-by-frame, with a projector and a camera.

在动画软件出现之前，标题序列“光学” 拍摄的——这只另一种说法， 它们用投影仪和摄影机逐帧手动制作的。

However, in 1995 Optically Stimulated Luminescence(OSL) testing was carried out by the Oxford Archaeological Unit on soil from two of the lower layers of the horse's body, and from another cut near the base.

然，在 1995 年，牛津考古单位对马身体下层的两层土壤和底部附近的另一处切口进行了光激发光 (OSL) 测试。

'When, just now, we had reached a planet whose remoteness is a hundred times the remoteness of the sun from the earth, we were only a two thousandth part of the journey to the spot at which we have optically arrived now'.

“就在刚才，当我们到达一颗行星，其距离太阳距离地球的距离的一百倍时，我们距离我们现在光学到达的地点的路程只有千分之二”。