811: Starlight

Explain xkcd: It's 'cause you're dumb.
Revision as of 19:11, 23 February 2013 by Divad27182 (Talk | contribs)

Jump to: navigation, search
Starlight
Don't worry! From the light's point of view, home and your eye are in the same place, and the journey takes no time at all! Relativity saves the day again.
Title text: Don't worry! From the light's point of view, home and your eye are in the same place, and the journey takes no time at all! Relativity saves the day again.

Explanation

In this comic, Megan talks with Beret Guy about the journey of light through universe from its source to our eyes. In Megan opinion, it is very sad that this journey is pointless - light travel ends only with us seeing "pretty dot" - stars in the sky. Beret Guy then try to return light to its birth place by using a mirror, which reflects light back to its source. Title text is a reference to special relativity, which states, that from the position of a observer moving at a speed of light, the time around him should be static, so it takes no time to go anywhere.

Transcript

[Megan and Beret Guy stand under the stars]
Megan: The starlight falls on our eyes after a journey across trillions of miles - dying here at last, so far from home, all so we can see some pretty dots.
[Beret Guy think for a moment, then runs away, comes back with a mirror, and holds it up towards the stars]
comment.png add a comment!

Discussion

I thought that was a picture frame, a mirror makes more sense. 184.66.160.91 08:40, 17 July 2013 (UTC)

From the light's point of view, EVERYTHING is in the same place. The whole universe in one point. 108.162.238.114 (talk) (please sign your comments with ~~~~)
Personal tools
Namespaces

Variants
Actions
Navigation
Tools

It seems you are using noscript, which is stopping our project wonderful ads from working. Explain xkcd uses ads to pay for bandwidth, and we manually approve all our advertisers, and our ads are restricted to unobtrusive images and slow animated GIFs. If you found this site helpful, please consider whitelisting us.

Want to advertise with us, or donate to us with Paypal or Bitcoin?