如果基因是激活的，样本中的RNA就会与相应的基因片段结合在一起，再利用紫外光观察，那些激活的基因就成为一个个被染色的斑点。

If a gene is active, the RNA in the sample binds to the complementary gene fragment on the slide, and can be detected under ultraviolet light as a coloured dot.

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一些公司，比如像索尼，正在关注一些由薄片状的有机分子组成的有机发光二极管，这些二极管能根据电流来相应的发出光。

Some firms, such as Sony, are looking at organic light-emitting diodes composed of thin films of organic molecules which generate light in response to an electric current.

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然后此控制装置相应地调整照明。例如，如果大量自然光从窗户照进来时，控制器可调低人造光的量。

The control device then adjusts the lighting accordingly. If plenty of natural light is coming in through the Windows, for example, the controller lowers the amount of artificial light.

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So this is an example of Biomedical Engineering, one that is well integrated into our society to the point that we've probably all got a picture like this somewhere in our past, and where we understand the physical principles that allow us to use it.

故而,这成为生物医学工程的一个实例,这类技术已经很好的融入了我们的社会,因为也许我们每个人都拍过,这样的X光片,正是因为我们懂得了,相应的物理学原理才能去运用这项技术

耶鲁公开课 - 生物医学工程探索课程节选