Editing 941: Depth Perception
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==Explanation== | ==Explanation== | ||
− | This comic is one of those that is | + | This comic is very self-explanatory as it explains what is being done every step of the way. This is one of those xkcds that is all about emotion and feeling for both [[Cueball]] and the reader. |
− | + | Ancient stargazers thought the sky was simply a domed ceiling like the second frame on the top line. | |
− | + | In the first frame of the second line, Cueball puts HD webcams on the tops of football uprights, so "hundreds of feet" apart would be 120 yards (360 feet) apart exactly. | |
− | + | Cueball uses strong reading glasses and side-by-side webcam images to greatly expand his {{w|Depth perception|depth perception}} using the principle of {{w|Parallax|parallax}}. Presumably the reversal of the "right camera" and "left camera" panes on the smartphone screen is just a mistake rather than an arcane technical requirement. | |
− | The | + | The title text is a line from "{{w|Both Sides Now}}" by Joni Mitchell. |
− | + | It's worth noting that, although the trick may work with clouds, the stars will still look like they are simply painted onto a dome. | |
==Transcript== | ==Transcript== | ||
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:[In the top part of the 2ns panel stands Cueball on a flat disk inside a hemispherical dome with the front half cut away. The dome is about three times as tall as Cueball. Above the dome there is one frame with text. There is also two labeled arrows pointing to the dome and the disk.] | :[In the top part of the 2ns panel stands Cueball on a flat disk inside a hemispherical dome with the front half cut away. The dome is about three times as tall as Cueball. Above the dome there is one frame with text. There is also two labeled arrows pointing to the dome and the disk.] | ||
:Stars are the same way. | :Stars are the same way. | ||
− | + | :Arrow up: Sky | |
− | + | :Arrow down: Ground | |
:[Text in between the top and the bottom panels:] | :[Text in between the top and the bottom panels:] | ||
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:And fed one stream to each of my eyes. | :And fed one stream to each of my eyes. | ||
:The parallax expanded my depth perception by a thousand times, | :The parallax expanded my depth perception by a thousand times, | ||
− | : | + | <br> |
− | : | + | :Label top left: Right camera |
− | : | + | :Label top right: Smartphone |
− | : | + | :Label bottom left: Very strong reading glasses |
+ | :Label bottom right: Left camera | ||
:[Cueball stands wearing the phone glasses assembly, one hand held up to the device, staring into the sky. There are two frames one above and one below with two lines of text each:] | :[Cueball stands wearing the phone glasses assembly, one hand held up to the device, staring into the sky. There are two frames one above and one below with two lines of text each:] |