{"id":74444,"date":"2021-10-19T15:15:37","date_gmt":"2021-10-19T12:15:37","guid":{"rendered":"https:\/\/azbuki.bg\/?p=74444"},"modified":"2021-10-19T15:15:37","modified_gmt":"2021-10-19T12:15:37","slug":"problem-of-the-8-th-experimental-physics-olympiad-skopje-8-may-2021-determination-of-planck-constant-by-led","status":"publish","type":"post","link":"https:\/\/bel.azbuki.bg\/en\/uncategorized\/problem-of-the-8-th-experimental-physics-olympiad-skopje-8-may-2021-determination-of-planck-constant-by-led\/","title":{"rendered":"Problem of the 8-th Experimental Physics Olympiad, Skopje, 8 May 2021 Determination of Planck constant by LED"},"content":{"rendered":"

Todor M. Mishonov 1), Aleksander P. Petkov 1), Matteo Andreoni 1), <\/strong>
\nEmil G. Petkov 1), Albert M. Varonov 1), <\/strong>
\nIglika M. Dimitrova 1), 2), Leonora Velkoska 3), <\/strong>
\nRiste Popeski-Dimovski 3)<\/strong>
\n1) Georgi Nadjakov Institute of Solid State Physics \u2013 BAS (Bulgaria)<\/em>
\n2) University of Chemical Technology and Metallurgy (Bulgaria)<\/em>
\n3) \u201cSs. Cyril and Methodius\u201d University \u2013 Skopje (R. N. Macedonia)<\/em><\/p>\n

https:\/\/doi.org\/10.53656\/nat2021-3.03<\/a><\/p>\n

Abstract.<\/strong> This is the problem of the 8th International Experimental Physics Olympiad (EPO8). The task of the EPO8 is to determine Planck constant \u0127 = h\/2p using the given set-up with LED. If you have an idea how to do it, do it and send us the result; skip the reading of the detailed step by step instructions with increasing difficulties. We expect the participants to follow the suggested items \u2013 they are instructive for physics education in general. Only the reading of historical remarks given in the first section can be omitted during the Olympiad without loss of generality. Participants should try solving as much tasks as they can without paying attention to the age categories: give your best.
\nKeywords:<\/em> measurement of Planck constant; light emitting diode (LED); compact disk (CD) diffraction grating; Experimental Physics Olympiad (EPO); current-voltage characteristics I \u2013 V curves<\/p>\nLog in to read the full text<\/a>","protected":false},"excerpt":{"rendered":"

Todor M. Mishonov 1), Aleksander P. Petkov 1), Matteo Andreoni 1), Emil G. Petkov 1), Albert M. Varonov 1), Iglika M. Dimitrova 1), 2), Leonora Velkoska 3), Riste Popeski-Dimovski 3) 1) Georgi Nadjakov Institute of Solid State Physics \u2013 BAS (Bulgaria) 2) University of Chemical Technology and Metallurgy (Bulgaria) 3) \u201cSs. Cyril and Methodius\u201d University […]<\/p>","protected":false},"author":124332423426818,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":{"subtitle":"","format":"standard","video":"","gallery":"","source_name":"","source_url":"","via_name":"","via_url":"","override_template":"0","override":[{"single_blog_custom":"","parallax":"0","fullscreen":"0","sidebar":"","second_sidebar":"","sticky_sidebar":"0","share_position":"","share_float_style":"","show_share_counter":"0","show_view_counter":"0","show_featured":"0","show_post_meta":"0","show_post_author":"0","show_post_author_image":"0","show_post_date":"0","post_date_format":"","post_date_format_custom":"","show_post_category":"0","show_post_reading_time":"0","post_reading_time_wpm":"","show_post_tag":"0","show_prev_next_post":"0","show_popup_post":"0","number_popup_post":"1","show_author_box":"0","show_post_related":"0","show_inline_post_related":"0"}],"override_image_size":"0","image_override":[{"single_post_thumbnail_size":"","single_post_gallery_size":""}],"trending_post":"0","trending_post_position":"","trending_post_label":""},"jnews_primary_category":{"id":""}},"categories":[1],"tags":[],"yoast_head":"\nProblem of the 8-th Experimental Physics Olympiad, Skopje, 8 May 2021 Determination of Planck constant by LED - \u0410\u0437-\u0431\u0443\u043a\u0438<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/newspaper.azbuki.bg\/uncategorized\/problem-of-the-8-th-experimental-physics-olympiad-skopje-8-may-2021-determination-of-planck-constant-by-led\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Problem of the 8-th Experimental Physics Olympiad, Skopje, 8 May 2021 Determination of Planck constant by LED - \u0410\u0437-\u0431\u0443\u043a\u0438\" \/>\n<meta property=\"og:description\" content=\"Todor M. 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