How can I create a UV map of my arm?

我如何创建一个紫外线的地图我的胳膊吗？

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But don't buy a UV light for the nursery just yet.

但是，可千万别放个紫外线灯在保育室。

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We have a UV lamp right here, which is centered at a wavelength of 254 nanometers.

我们有一个紫外灯在这里，波长集中在254纳米处。

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We have a UV lamp right here, which is centered at a wavelength of 254 nanometers.

我们有一个紫外灯在这里，波长集中在254纳米处。

麻省理工公开课 - 化学原理课程节选

So, ideally what we did see was, in fact, it does have enough energy with the UV lamp, it wasn't a dramatic shift you saw because we didn't start very high and then it went to that stuck point.

所以，理想上我们所看到的，事实上，紫外灯没有足够的能力，因为我们没有从非常高开始,所以它没有一个特别显著的移动,然后它又回到了黏着点。

麻省理工公开课 - 化学原理课程节选

We can think about the Lyman series, which is 1 where n equals 1. We know that that's going to be a higher energy difference, so that means that we're going to be in the UV range.

我们可以来看看Lyman系,也就是n等于,我们知道它的能量差更大,所以它在紫外光区内。

麻省理工公开课 - 化学原理课程节选

However there are lots of commercial issues with a UV optical disc besides creating inexpensive devices to generate this wavelength of light.

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Nano bar codes are the molecular versions of traditional bar codes--metal nano-particles that have specific, recognizable chemical fingerprints that can be read by a machine, perhaps a UV lamp or optical microscope.

FORBES: Safer And Guilt-Free Nano Foods

Only a limited number meet Food and Drug Administration standards for "Class 1" protection, in which 90% of UV-A radiation is blocked and 99% of UV-B radiation is blocked.

WSJ: Contacts Lenses That Let In Sun, But Block UV Rays