{"id":2047,"date":"2026-04-06T00:25:35","date_gmt":"2026-04-05T16:25:35","guid":{"rendered":"https:\/\/oknomad.blog\/?p=2047"},"modified":"2026-04-06T03:06:42","modified_gmt":"2026-04-05T19:06:42","slug":"image-from-bigger-gravity-or-d_u-and-a-thought-experiment-about-speed-of-light","status":"publish","type":"post","link":"https:\/\/oknomad.blog\/?p=2047","title":{"rendered":"image from bigger gravity or d_u and a thought experiment about speed of light"},"content":{"rendered":"\n<p>1. a correction for image from region of bigger gravity or d_u (interior length).<\/p>\n\n\n\n<p>An observor shall see space or objects in a region of bigger gravity\/d_u being smaller than they actually look like by another observer in the region. Also an observor shall see space or objects in a region of smaller gravity\/d_u being bigger than they actually look like by another observer in the region.<\/p>\n\n\n\n<p>This is because: <\/p>\n\n\n\n<p>for light to travel smoothly between space units of different d_u (interior lengths), all space units must be treated as same standard outerior frame\/grid size d_p for light to transpassing between, so space unit of bigger d_u will look like shrinking to d_p when light transpass to other space unit of smaller d_u,<\/p>\n\n\n\n<p>so when oberver is in a region of smaller d_u to see light from another region of bigger d_u, the image of space and objects in another region will look like being shrinked when light transpass to the region of observer, <\/p>\n\n\n\n<p>but when observer is in a region to see light from another region of same d_u, the image and space in another region will look as exactly same size,<\/p>\n\n\n\n<p>so in fact d_u=c\/f_g which means space interior length increase proportional to 1\/f_g can also be interpreted as the length of a singal\/object inside a space unit shrink proportional to f_g\/f_p.<\/p>\n\n\n\n<p>2. a thought experiment of light speed  <\/p>\n\n\n\n<p>I have an argue with Grok about an thought experiment of light speed, in which we can not convince each other.<\/p>\n\n\n\n<p>Supposing there is an oberser on the surface of SUN. There are 2 points A and B far away from the observer. The light needs exactly same time from A and B to SUN. There is extremely low or 0 gravity field on the direct route from A to B.<\/p>\n\n\n\n<p>And there is a semi-reflection mirror at A, and a light entering A will partially pass througth to B and partially be reflected to the observer, and light from A to B will be reflected by B to observer.<\/p>\n\n\n\n<p>So the observer can know the time that light needs to travel from A to B by the interval that the observer receive the light from A and B. <\/p>\n\n\n\n<p>And the observer knows the accurate distance from A to B.<\/p>\n\n\n\n<p>I told Grok: by the interval between receiving light from A and B, the observer will measure that light speed from A to B is faster than constant c, for the observer&#8217;s local f_s is much lower than the local f_s on the route from A to B.<\/p>\n\n\n\n<p>But Grok cant agree and think that the observer will measure that light speed is still no more than constant c. <\/p>\n\n\n\n<p>What&#8217;s your opinion?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. a correction for image from region of bigger gravity or d_u (interior length). An observor shall see space or objects in a region of&#8230;<\/p>\n<div class=\"more-link-wrapper\"><a class=\"more-link\" href=\"https:\/\/oknomad.blog\/?p=2047\">Continue reading<span class=\"screen-reader-text\">image from bigger gravity or d_u and a thought experiment about speed of light<\/span><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2047","post","type-post","status-publish","format-standard","hentry","category-uncategorized","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/oknomad.blog\/index.php?rest_route=\/wp\/v2\/posts\/2047","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oknomad.blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/oknomad.blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/oknomad.blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/oknomad.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2047"}],"version-history":[{"count":4,"href":"https:\/\/oknomad.blog\/index.php?rest_route=\/wp\/v2\/posts\/2047\/revisions"}],"predecessor-version":[{"id":2052,"href":"https:\/\/oknomad.blog\/index.php?rest_route=\/wp\/v2\/posts\/2047\/revisions\/2052"}],"wp:attachment":[{"href":"https:\/\/oknomad.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2047"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oknomad.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2047"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oknomad.blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2047"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}