The following warnings occurred:
Warning [2] Undefined variable $awaitingusers - Line: 33 - File: global.php(779) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/global.php(779) : eval()'d code 33 errorHandler->error
/global.php 779 eval
/showthread.php 24 require_once
Warning [2] Undefined array key "style" - Line: 837 - File: global.php PHP 8.1.27 (Linux)
File Line Function
/global.php 837 errorHandler->error
/showthread.php 24 require_once
Warning [2] Undefined property: MyLanguage::$lang_select_default - Line: 4950 - File: inc/functions.php PHP 8.1.27 (Linux)
File Line Function
/inc/functions.php 4950 errorHandler->error
/global.php 837 build_theme_select
/showthread.php 24 require_once
Warning [2] Undefined variable $visibleonly - Line: 412 - File: showthread.php PHP 8.1.27 (Linux)
File Line Function
/showthread.php 412 errorHandler->error
Warning [2] Undefined array key 1 - Line: 1394 - File: inc/functions.php PHP 8.1.27 (Linux)
File Line Function
/inc/functions.php 1394 errorHandler->error
/inc/functions.php 1359 fetch_forum_permissions
/inc/functions.php 2862 forum_permissions
/showthread.php 616 build_forum_jump
Warning [2] Undefined array key 1 - Line: 1394 - File: inc/functions.php PHP 8.1.27 (Linux)
File Line Function
/inc/functions.php 1394 errorHandler->error
/inc/functions.php 1359 fetch_forum_permissions
/inc/functions.php 2862 forum_permissions
/showthread.php 616 build_forum_jump
Warning [2] Undefined array key "mybb" - Line: 1907 - File: inc/functions.php PHP 8.1.27 (Linux)
File Line Function
/inc/functions.php 1907 errorHandler->error
/inc/functions_indicators.php 41 my_set_array_cookie
/showthread.php 624 mark_thread_read
Warning [2] Undefined property: MyLanguage::$ratings_update_error - Line: 5 - File: showthread.php(727) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(727) : eval()'d code 5 errorHandler->error
/showthread.php 727 eval
Warning [2] Undefined variable $postsdone - Line: 858 - File: showthread.php PHP 8.1.27 (Linux)
File Line Function
/showthread.php 858 errorHandler->error
Warning [2] Trying to access array offset on value of type null - Line: 858 - File: showthread.php PHP 8.1.27 (Linux)
File Line Function
/showthread.php 858 errorHandler->error
Warning [2] Undefined array key 460 - Line: 858 - File: showthread.php PHP 8.1.27 (Linux)
File Line Function
/showthread.php 858 errorHandler->error
Warning [2] Undefined array key 461 - Line: 858 - File: showthread.php PHP 8.1.27 (Linux)
File Line Function
/showthread.php 858 errorHandler->error
Warning [2] Undefined array key 463 - Line: 858 - File: showthread.php PHP 8.1.27 (Linux)
File Line Function
/showthread.php 858 errorHandler->error
Warning [2] Undefined variable $lang - Line: 2 - File: showthread.php(1563) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1563) : eval()'d code 2 errorHandler->error
/showthread.php 1563 eval
/showthread.php 870 buildtree
Warning [2] Attempt to read property "by" on null - Line: 2 - File: showthread.php(1563) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1563) : eval()'d code 2 errorHandler->error
/showthread.php 1563 eval
/showthread.php 870 buildtree
Warning [2] Undefined variable $posts - Line: 2 - File: showthread.php(1563) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1563) : eval()'d code 2 errorHandler->error
/showthread.php 1563 eval
/showthread.php 870 buildtree
Warning [2] Undefined variable $lang - Line: 2 - File: showthread.php(1559) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1559) : eval()'d code 2 errorHandler->error
/showthread.php 1559 eval
/showthread.php 1568 buildtree
/showthread.php 870 buildtree
Warning [2] Attempt to read property "by" on null - Line: 2 - File: showthread.php(1559) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1559) : eval()'d code 2 errorHandler->error
/showthread.php 1559 eval
/showthread.php 1568 buildtree
/showthread.php 870 buildtree
Warning [2] Undefined variable $posts - Line: 2 - File: showthread.php(1559) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1559) : eval()'d code 2 errorHandler->error
/showthread.php 1559 eval
/showthread.php 1568 buildtree
/showthread.php 870 buildtree
Warning [2] Undefined array key 460 - Line: 1566 - File: showthread.php PHP 8.1.27 (Linux)
File Line Function
/showthread.php 1566 errorHandler->error
/showthread.php 1568 buildtree
/showthread.php 870 buildtree
Warning [2] Undefined variable $lang - Line: 2 - File: showthread.php(1563) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1563) : eval()'d code 2 errorHandler->error
/showthread.php 1563 eval
/showthread.php 1568 buildtree
/showthread.php 870 buildtree
Warning [2] Attempt to read property "by" on null - Line: 2 - File: showthread.php(1563) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1563) : eval()'d code 2 errorHandler->error
/showthread.php 1563 eval
/showthread.php 1568 buildtree
/showthread.php 870 buildtree
Warning [2] Undefined array key 461 - Line: 1566 - File: showthread.php PHP 8.1.27 (Linux)
File Line Function
/showthread.php 1566 errorHandler->error
/showthread.php 1568 buildtree
/showthread.php 870 buildtree
Warning [2] Undefined variable $lang - Line: 2 - File: showthread.php(1563) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1563) : eval()'d code 2 errorHandler->error
/showthread.php 1563 eval
/showthread.php 1568 buildtree
/showthread.php 870 buildtree
Warning [2] Attempt to read property "by" on null - Line: 2 - File: showthread.php(1563) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1563) : eval()'d code 2 errorHandler->error
/showthread.php 1563 eval
/showthread.php 1568 buildtree
/showthread.php 870 buildtree
Warning [2] Undefined array key 463 - Line: 1566 - File: showthread.php PHP 8.1.27 (Linux)
File Line Function
/showthread.php 1566 errorHandler->error
/showthread.php 1568 buildtree
/showthread.php 870 buildtree
Warning [2] Undefined array key "additionalgroups" - Line: 6846 - File: inc/functions.php PHP 8.1.27 (Linux)
File Line Function
/inc/functions.php 6846 errorHandler->error
/inc/functions_user.php 734 is_member
/inc/functions_post.php 398 purgespammer_show
/showthread.php 871 build_postbit
Warning [2] Undefined array key "profilefield" - Line: 6 - File: inc/functions_post.php(466) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/inc/functions_post.php(466) : eval()'d code 6 errorHandler->error
/inc/functions_post.php 466 eval
/showthread.php 871 build_postbit
Warning [2] Undefined array key "canonlyreplyownthreads" - Line: 641 - File: inc/functions_post.php PHP 8.1.27 (Linux)
File Line Function
/inc/functions_post.php 641 errorHandler->error
/showthread.php 871 build_postbit
Warning [2] Undefined array key "showimages" - Line: 699 - File: inc/functions_post.php PHP 8.1.27 (Linux)
File Line Function
/inc/functions_post.php 699 errorHandler->error
/showthread.php 871 build_postbit
Warning [2] Undefined array key "showvideos" - Line: 704 - File: inc/functions_post.php PHP 8.1.27 (Linux)
File Line Function
/inc/functions_post.php 704 errorHandler->error
/showthread.php 871 build_postbit
Warning [2] Undefined array key "invisible" - Line: 1491 - File: showthread.php PHP 8.1.27 (Linux)
File Line Function
/showthread.php 1491 errorHandler->error
Warning [2] Undefined variable $threadnotesbox - Line: 30 - File: showthread.php(1518) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1518) : eval()'d code 30 errorHandler->error
/showthread.php 1518 eval
Warning [2] Undefined variable $multipage - Line: 33 - File: showthread.php(1518) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1518) : eval()'d code 33 errorHandler->error
/showthread.php 1518 eval
Warning [2] Undefined variable $multipage - Line: 65 - File: showthread.php(1518) : eval()'d code PHP 8.1.27 (Linux)
File Line Function
/showthread.php(1518) : eval()'d code 65 errorHandler->error
/showthread.php 1518 eval




Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
How big can a space colony get?
#2
Surface to dispose of waste heat scales with R^2. Internal passages for access imply a similar limit on how much hardware you stuff inside.

Pressure vessel loading is as you describe.

The gotcha may be centrifugal stress, scaling with radius and gravity. Beyond a certain scale you are forced to reduce artificial gravity or get clever in your engineering, or the weight of the structural elements opposing gravity exceeds their own strength.
Reply


Messages In This Thread
RE: How big can a space colony get? - hanelyp - 08-17-2016, 03:18 PM

Forum Jump:


Users browsing this thread: 1 Guest(s)