https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&feedformat=atom&user=TestudoHanrowexplain xkcd - User contributions [en]2026-05-03T23:53:59ZUser contributionsMediaWiki 1.30.0https://www.explainxkcd.com/wiki/index.php?title=1733:_Solar_Spectrum&diff=1270311733: Solar Spectrum2016-09-15T13:16:56Z<p>TestudoHanrow: </p>
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<div>{{comic<br />
| number = 1733<br />
| date = September 15, 2016<br />
| title = Solar Spectrum<br />
| image = solar_spectrum.png<br />
| titletext = I still don't understand why the Sun paid the extra money for Transitions lenses.<br />
}}<br />
<br />
==Explanation==<br />
{{incomplete|Examples of such advertisements needed}}<br />
This is a reference to pictures / clipart of the sun wearing sunglasses, often used to denote good weather. The title text is most likely a reference to a specific advert using this image.<br />
<br />
Transitions are a type of coating used prescription spectacles that allow the lens to turn dark when exposed to UV light such as that found in sunlight. The sun choosing to get transition lens would prove a waste of money as the lenses would be permanently transitioned to be dark, so a pair of ordinary sunglasses would likely have proved more cost effective.<br />
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==Transcript==<br />
{{incomplete transcript}}<br />
[A graph, showing the sun's spectral lines. The graph is a typical spectral lines chart, with a long rainbow band (from purple on the left to red on the right) with black lines in it, indicating the traces of different elements.]<br />
<br />
[The labels match these lines from left to right:]<br />
<br />
*Calcium<br />
*Calcium<br />
*Hydrogen<br />
*Calcium<br />
*Iron<br />
*Hydrogen<br />
*Iron<br />
*Iron<br />
*Unlabeled<br />
*Hydrogen<br />
*Iron<br />
*Unlabeled<br />
*Magnesium<br />
*Magnesium<br />
*Iron<br />
*Unlabeled<br />
*Unlabeled<br />
*Unlabeled<br />
*Those giant sunglasses<br />
*Sodium<br />
*Sodium<br />
*Oxygen<br />
*Those giant sunglasses<br />
*Those giant sunglasses<br />
*Unlabeled<br />
*Those giant sunglasses<br />
*Oxygen<br />
*Those giant sunglasses<br />
<br />
{{comic discussion}}</div>TestudoHanrow