In an undated picture, a mock-up of the A-12 spy plane sits perched upside down on a testing pylon at Area 51-part of radar tests to reveal revealed how visible, or invisible, the design was to radar.

在一张未标明日期的图片中，一架实物模型的A - 12间谍飞机倒挂着停放在51区的一个测试塔上，这是为了测试该飞机的外观在雷达上可视或不可视的程度。

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Impossible to see in the picture: the coordinated shout and semi-bow toward the plane when the fueling was done.

还有图片上看不到的东西：加完油后，他们会齐声大喊，并向飞机半鞠躬。

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One thing that's on this picture that I haven't drawn down is the normal vector to the plane.

图上有个东东我没画,就是这个平面的法向量。

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And when we look at this, it's actually split by what's called a nodal plane, which is pointed out in light orange here on this picture, but what we just mean is that there is this whole plane that separates the two lobes where there is absolutely no electron density.

我们来看这里，实际上它被一个节面分开，在这图里用淡黄色表示，这意味着这个分开,两个叶瓣的平面上,是完全没有电子密度的。

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Our picture now is going to be some particle that's traveling in the x-y plane.

我们现在的情景是在 x-y 平面内,运动的质点

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Cubists focused on the two dimensional picture plane, attempting visual deception by combining geometric shapes to portray real objects, oft incorporating fragments of reproduced pop culture.

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Where the first is expansive, with figures pointing out of the picture plane and with food arranged on the table in the manner of a still-life, the second is more restrained and internal, concentrating on the mystery surrounding Christ, rather than on the dramatic moment of recognition.

ECONOMIST: Caravaggio

The process of turning 18 holes into an immersive digital experience begins by shooting up to 300, 000 photos with high-definition and laser cameras, on land and from a helicopter and plane, each picture attached to an exact location using GPS. Imaging can take two to three weeks and cost hundreds of thousands of dollars per course.

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