this post was submitted on
14 points (79% like it)
19 up votes 5 down votes

pics

subscribe2,531,102 readers

4,647 users here now

Submit your Halloween pumpkin pics to /r/horror's carving competition!

A place to share interesting photographs and pictures. Feel free to post your own, but please read the rules first (see below), and note that we are not a catch-all for general images (of screenshots, comics, etc.)

Spoiler code

Please mark spoilers like this:
[text here](/spoiler)

Hover over to read.

Rules

  1. No screenshots, or pictures with added or superimposed text. This includes image macros, comics, info-graphics and most diagrams. Text (e.g. a URL) serving to credit the original author is exempt.

  2. No gore or porn. NSFW content must be tagged.

  3. No personal information. This includes anything hosted on Facebook's servers, as they can be traced to the original account holder. Stalking & harassment will not be tolerated.

  4. No solicitation of votes (including "cake day" posts), posts with their sole purpose being to communicate with another redditor, or [FIXED] posts. DAE posts go in /r/DoesAnybodyElse. "Fixed" posts should be added as a comment to the original image.

  5. Submissions must link directly to a specific image file or to an image hosting website with minimal ads. We do not allow blog hosting of images ("blogspam"), but links to albums on image hosting websites are okay. URL shorteners are prohibited.

  • If your submission appears to be filtered but definitely meets the above rules, please send us a message with a link to the comments section of your post (not a direct link to the image). Don't delete it as that just makes the filter hate you!

  • If you come across any rule violations, please report the submission or message the mods and one of us will remove it!

Please also try to come up with original post titles. Submissions that use certain clichés/memes will be automatically tagged with a warning.

Links

If your post doesn't meet the above rules, consider submitting it on one of these other subreddits:

Comics  
/r/comics /r/webcomics
/r/vertical /r/f7u12
/r/ragenovels /r/AdviceAtheists
Image macros Screenshots/text
/r/lolcats /r/screenshots
/r/AdviceAnimals /r/desktops
/r/Demotivational /r/facepalm (Facebook)
/r/reactiongifs /r/DesktopDetective
Wallpaper Animals
/r/wallpaper /r/aww
/r/wallpapers /r/cats
The SFWPorn Network /r/TrollingAnimals
  /r/deadpets
  /r/birdpics
  /r/foxes
Photography Un-moderated pics
/r/photography /r/AnythingGoesPics
/r/photocritique /r/images
/r/HDR
/r/windowshots
/r/PictureChallenge
Misc New reddits
/r/misc /r/britpics
/r/gifs Imaginary Network
/r/dataisbeautiful /r/thennnow
/r/picrequests /r/SpecArt
/r/LookWhoIMet
  /r/timelinecovers
  /r/MemesIRL
  /r/OldSchoolCool
  /r/photoshopbattles
  /r/PastAndPresentPics .

Also check out http://irc.reddit.com

a community for

reddit is a source for what's new and popular online. vote on links that you like or dislike and help decide what's popular, or submit your own! learn more ›

all 5 comments

[–]mailman35 0 points1 point ago

sorry, this has been archived and can no longer be voted on

This photo was on a science book I had in 4th grade!

[–]MinkyBoodle[S] 0 points1 point ago

sorry, this has been archived and can no longer be voted on

Science!

[–]TheEllimist 0 points1 point ago

sorry, this has been archived and can no longer be voted on

This photo was in an aerodynamics textbook I had in college :)

[–]mailman35 0 points1 point ago

sorry, this has been archived and can no longer be voted on

My 4th grade book was obviously more advanced for the time

[–]TheEllimist 0 points1 point ago

sorry, this has been archived and can no longer be voted on

Interesting fact: the reason that you see winglets on the wingtips of planes (they're those vertical bits on the ends) or planes with really high wing aspect ratios (such as the U2 spy plane) is to mitigate the effect of these vortices. Essentially, because you have this air flowing that way over the tip of the wing, it cuts down on the amount of lift that the affected section of the wing can provide, which is called lift-induced drag. Winglets simply try to block part of that spanwise flow over the wing, and a high aspect ratio increases the proportion of the wing that isn't affected the by the vortices.