When a wave travels uniformly in all directions from a small source, the intensity varies inversely as the square of the distance.

当波从小扰动源向各个方向均匀传播时，其强度的变化与距离的平方成反比。

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Nor is it possible simply to crank up the power of the source beam, because infra-red light at high intensity can cause eye damage.

他说，“多数光不会你想让它到哪它就到里”。 也不可能简单地增强光束的强度，因为高强度的红外光会伤害人眼。

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They create a black and white mask of the contribution of each single light, allowing us to boost or decrease the intensity and color correct separately every single light source.

它们给每束光创建了一个黑白遮罩，可以允许我们增加或减少亮度，并给每束光源单独纠正颜色。

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"It's correlating the increasing intensity in different bands that provides really important clues about the structure of the source, " Prof Madejski - a co-investigator on the NuStar X-ray telescope, told BBC News.

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Mr. KAISER: Well, Ike is moved off-shore of south of Cuba, into the Caribbean, and back over water which means perhaps a little bit of intensity increase as it again joins that source of energy over those warm waters.

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