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| + | And we are back! Sorry for the database issues! --[[User:Jeff|Jeff]] ([[User talk:Jeff|talk]]) 13:16, 4 October 2012 (UTC) | ||
== Latest comic == | == Latest comic == | ||
Revision as of 13:16, 4 October 2012
Welcome to the explain xkcd wiki! We already have 12 comic explanations!
(But there are still 3170 to go. Come and add yours!)
And we are back! Sorry for the database issues! --Jeff (talk) 13:16, 4 October 2012 (UTC)
Latest comic
| Telescope Types |
 Title text: I'm trying to buy a gravitational lens for my camera, but I can't tell if the manufacturers are listing comoving focal length or proper focal length. |
Explanation
This comic shows diagrams of a number of different types of telescope, some real and others made up by Randall. It includes both refracting and reflecting designs; see 1791: Telescopes: Refractor vs Reflector for the important differences between them.
| Type | Real? | Refractor/Reflector | Description |
|---|---|---|---|
| Prime Focus | Yes | Reflector | |
| Herschelian | Yes | Reflector | |
| Newtonian | Yes | Reflector | |
| Galilean | Yes | Refractor | |
| Keplerian | Yes | Refractor | |
| Gregorian | Yes | Reflector | |
Transcript
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- List of all comics contains a complete table of all xkcd comics so far and the corresponding explanations. The red links (like this) are missing explanations. Feel free to help out by creating them!
Rules
Don't be a jerk. There are a lot of comics that don't have set in stone explanations, feel free to put multiple interpretations in the wiki page for each comic.
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