{"id":421936,"date":"2025-02-17T08:33:32","date_gmt":"2025-02-17T08:33:32","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-analyse-the-luminous-intensity-at-various-distances-from-the-light-source\/"},"modified":"2025-02-27T08:00:12","modified_gmt":"2025-02-27T08:00:12","slug":"how-to-analyse-the-luminous-intensity-at-various-distances-from-the-light-source","status":"answered","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-analyse-the-luminous-intensity-at-various-distances-from-the-light-source\/","title":{"rendered":"How to analyse the luminous intensity at various distances from the light source"},"content":{"rendered":"<pre>Hello,&lt;br&gt;&lt;br&gt;In Ansys SPEOS 2024 R1,&lt;br&gt;&lt;br&gt;I created two intensity sensors (same origin axis) at differenent distances from the source.&lt;br&gt;&lt;br&gt;One is located at a distance of 480 mm and the other is located at 1000 mm.&lt;br&gt;&lt;br&gt;I checked the intensity values after the simulation. Both of them showed the same intensity in candelas (cross checked with various measurement positions).&lt;br&gt;&lt;br&gt;But, according to the inverse square law, the luminous intensity must fall with greater distances right (intensity &prop; 1\/d2) ?&lt;br&gt;&lt;br&gt;Why i did not see any change in intensity ? suppose if i had done a wrong sensor construction in SPEOS, kindly correct me.&lt;br&gt;&lt;br&gt;Thanks &amp; Regards&lt;br&gt;Manu Varshan<\/pre>\n<p>&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/02\/17-02-2025-1739780803-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-421936","topic","type-topic","status-answered","hentry","topic-tag-3d-simulation","topic-tag-speos"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27816"],"_bbp_topic_id":["421936"],"_bbp_subscription":["504943","47486","10369","276106"],"_bbp_author_ip":["163.116.195.121"],"_bbp_last_reply_id":["423663"],"_bbp_last_active_id":["423663"],"_bbp_last_active_time":["2025-02-28 09:39:00"],"_bbp_reply_count":["4"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["3"],"_bbp_engagement":["504943","47486","10369"],"_btv_view_count":["443"],"_bbp_topic_status":["answered"]},"test":"s-manuvarshantvsmotor-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/421936","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/421936\/revisions"}],"predecessor-version":[{"id":423490,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/421936\/revisions\/423490"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=421936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}