Eventually, she and her colleagues worked out that the dragonfish reflects just one in every 2,000 photons incident upon it-an absorbance of 99.95%.

最终，她和她的同事发现深海龙鱼仅反射入射到其表面的1/2000的—吸为99.95%。

In addition, the sun's increasing luminosity will cause severe effects on Earth.

此外，太阳的持续增加将对地球造成严重的影响。

After that, we'll pass it through the spectrometer to measure how much glucose is present.

之后我们再使用分计来测定其中含有多少葡萄糖。

Unfortunately with this comparison, the searchlight is not nearly bright enough to represent fully the gamma-ray burst and in fact we would need a hundred billion such searchlights to have an adequate comparison.

人遗憾的是这个对比，探照灯的几乎还不足以充分代表伽玛射线爆发，事实上我们需要1000亿个这样的探照灯才能够进行恰当的对比。

Whether you're looking at somebody from far away or even at a low resolution, eyebrows are often still visible and continue to make an important contribution to the geometric and photometric structure of an observed image.

无论你是从远处看还是在低分辨率下看，眉毛通常仍然是见的，并且继续对观察到的图像的几何和结构做出重要贡献。

" A common misunderstanding is that a surgery can cure myopia, but in fact, the procedure can only remove the need for glasses, or apply the refractive function of glasses to the eyeball, " he said.

“目前最常见的误区是很多人都认为手术以治愈近视，实际上严格来讲，手术仅仅是‘摘镜’，也就是说，通过手术的手段，把眼镜的施加到眼球上，让我们的眼球能够匹配过生长的数。

The cuvette is used with a machine known as a spectrophotometer which analyzes the liquid by measuring the amount of light that is absorbed by it.

比色杯要跟一种名为分计的机器一起使用。分计以分析样本的液体，方法是测量样本吸收的量。

He came up with a system called magnitudes, where the brightest stars were 1st magnitude, the next brightest were 2nd magnitude, down to 6th magnitude.

他提出了一个叫做量级的系统，其中最亮的恒星是1级，其次是2级，一直到最后是6级。

The device also has a diopter adjustment built in, so people who wear glasses or contact can use it without wearing additional vision correction.

该设备还内置了调节功能，因此佩戴眼镜或接触的人无需佩戴额外的视力矫正即使用它。

No, sir, I answered with conviction. Not even angel-wing clams or salps have ever given off such a powerful light.

不，我很有把握地答，富拉得或沙尔已之类的动物决不能发出这么强的。

The company uses a tool called the Spectrophotometer to compare the same color on different surfaces.

潘通公司会使用一种名为分计的工具来比较不同表面上的相同颜色。

One is to look for stars in the nearby universe whose absolute luminosity we know.

一种是在附近的中寻找我们知道其绝对的恒星。

These are called Cepheid variables, and they were critically important, because it was known that the time it took them to pulse was directly related to their luminosity, how much energy they emitted.

这些被称为造父变星，它们非常重要，因为我们知道它们产生脉冲的时间与它们的直接相关，也就是它们释放的能量。

Wei Wenbin, a senior ophthalmologist at Beijing Tongren Hospital, told a recent news conference that laser eye surgeries are recommended for people age 18 and above to ensure stable refraction, but rigorous pre-operation evaluations should be carried out.

北京同仁医院资深眼科专家魏文斌在最近的新闻发布会上表示，建议18岁及以上的人接受近视激手术，确保稳定的，但应进行严格的术前评估。

Set astern of the pilothouse is a powerful electric reflector whose rays light up the sea for a distance of half a mile.

在领航人的笼间后面，装有一座很强的电探照灯，半海里以内的海洋都以照亮。

By connecting the spectrophotometer to a smartphone, a smartphone app is used to show the results.

将分计和智能手机连接后，智能手机上就以显示结果。

Finally in 1 billion years the sun's luminosity will have increased 10% from its current state.

最后，在十亿年后，太阳的将比目前的状态增加 10%。

The sun was already sending sufficient light under these waves. The tiniest objects remained visible.

太阳已经把足够的照到水底下来，最微小的物体也以看见。

The HR diagram plots stars' luminosity versus temperature, and most stars fall along the main sequence, where they live most of their lives.

HR 图描绘了恒星的与温的关系，大多数恒星沿着主序下落，它们大部分的生命都在主序中过。

We were not 100 feet from the blazing core of light, whose glow grew stronger and dazzled the eyes.

人们距白热的焦点不到一百英尺了，更强起来，照得我们的眼睛发昏。