340:
264:, additional Western countries had joined the IPhO, and the Eastern Bloc countries decided in 1977 that they would only host every other IPhO. As the Western countries were not yet ready with the necessary long-term preparation effort, no IPhO was held in 1978 and in 1980. The first Western Country to host the IPhO was the Federal Republic of Germany in 1982. Since then, the IPhO has been held regularly every year except 2020 due to the pandemic, and the organization has become a prestigious endeavor that many countries are happy to take.
297:
172:
439:
180:
284:
size was finally set to five students in 1971, and in 1976 the number of experimental problems was set to one or two, while there are three theoretical problems in each competition. In 1984, the IPhO established a permanent secretariat and a president's office. This position was held by
Waldemar Gorzkowski until the 2007 Olympiad, then Maija Ahtee (2007–2008), Hans Jordens (2008–2018) and Rajdeep Singh Rawat (2018 onwards). Since 1984 the IPhO has collaborated with
1000:
670:
1099:
472:
406:
1033:
868:
802:
571:
967:
736:
1066:
934:
637:
604:
505:
25:
1132:
769:
703:
835:
373:
901:
538:
279:
countries have been joining since the 2000s. After accession into IPhO, every country must notify the others within five years about its willingness to host the IPhO. The venue of the
Olympiad is decided for years ahead. With over 80 actively participating countries today, each IPhO is a big event
283:
The formal structure of the IPhO was established in 1968 at a dedicated meeting in
Czechoslovakia, soon after the second IPhO. There the statutes and the syllabus were officially accepted by the International Board, which consists of the delegation heads from all participating countries. The team
304:
The minimal scores required for
Olympiad medals and honourable mentions are chosen by the organizers according to the following rules: A gold medal should be awarded to the top 8% of the participants. A silver medal or better should be awarded to the top 25%. A bronze medal or better should be
151:
Each national delegation is made up of at most five student competitors plus two leaders, selected on a national level. Observers may also accompany a national team. The students compete as individuals, and must sit for intensive theoretical and laboratory examinations. For their efforts the
251:
as the first non-European country. With growing size and organizational effort (and no participation fee at that time), no country was willing to arrange an IPhO in 1973. To hold up the competition, Poland volunteered to host another IPhO in 1974, but the problem soon reappeared: With the
305:
awarded to the top 50%. An honourable mention or better should be awarded to the top 67%. All other participants receive certificates of participation. The participant with the highest score (absolute winner) receives a special prize, in addition to a gold medal.
223:
participated. Each country sent a delegation of three students and one supervisor. Already in this first edition, the competition consisted of two exams, one theoretical and one experimental, and the students went on excursions while their exams were marked.
280:
with around 700 attendees and a total budget of several million euros. A small fraction of the cost is covered by a participation fee of around €3500 per team, which was introduced in 1997 on a voluntary basis and made obligatory in 2013.
3424:
267:
The number of participating countries has grown steadily over the years. After the initial set of
Eastern Bloc countries, many European countries joined since the 1970s, as well as
3499:
2866:
42:
3210:
2856:
3417:
3224:
3179:
239:. Subsequent editions were carried out in the following years in Czechoslovakia, the Soviet Union, Bulgaria and Romania. At that sixth IPhO in 1972,
236:
3525:
3410:
3042:
2851:
3489:
3459:
89:
3494:
61:
3444:
192:
3484:
68:
3469:
108:
1501:
Not held as no non-socialist country was ready to organise the competition without a prior, necessary long-time preparation effort.
1463:
Not held as no non-socialist country was ready to organise the competition without a prior, necessary long-time preparation effort.
3149:
3479:
3474:
3454:
2542:
204:
75:
208:
3464:
3433:
137:
46:
212:
57:
3520:
220:
195:. Poland seemed to offer the best conditions at the time, and so the first IPhO was held in Warsaw in 1967, organized by
163:
examination may consist of one laboratory examination of five hours, or two, which together take up the full five hours.
1747:
253:
288:
for moral support and publicity. An advisory committee, consisting of 14 experienced people, was introduced in 1996.
216:
196:
159:
examination lasts 5 hours and consists of three questions. Usually these questions involve more than one part. The
228:
275:
countries starting in the 1980s. Between 1990 and 2000 alone, the total number increased from 32 countries to 63.
35:
2498:
Not held due to the COVID-19 pandemic. A Russia-organized IdPhO 2020 was held instead as an IPhO endorsed event.
3153:
1595:
82:
3049:
3530:
2861:
1817:
2219:
1396:
3325:
1442:
160:
296:
171:
179:
156:
133:
3012:
Participation statistics in the
International Physics Olympiads, prepared by the IPhO Secretariat
3043:"Final report of the 47th International Physics Olympiad in Switzerland and Liechtenstein 2016"
1742:
1915:
1518:
308:
The current ten countries with the best all-time results are as follows as of July 2024:
3157:
1643:
1104:
1005:
200:
3514:
2541:
Held online; Belarus was supposed to be host but cancelled due to involvement in the
1720:
477:
675:
244:
232:
188:
1939:
3402:
3321:
152:
students can be awarded gold, silver, or bronze medals or an honourable mention.
3225:"Indonesia Wins Two Gold, Three Silver Medals at International Physics Olympiad"
1619:
411:
24:
3211:"Indonesian students win gold, silver medals in International Physics Olympiad"
3028:
2911:
2435:
Not published due to inconsistent marking by organisers, among other reasons.
2423:
2323:
1391:
1038:
227:
The second IPhO was held in
Hungary, with the additional participation of the
2144:
2117:
1992:
1944:
1691:
1566:
1327:
873:
807:
576:
3130:
2966:
2949:
2398:
3238:
3197:"Minutes of the Meetings of the International Board during the IPhO 2017"
3196:
3102:
3088:
3073:
3011:
2477:
1867:
1793:
1418:
1227:
972:
741:
272:
187:
The idea of creating the
International Physics Olympiad was conceived in
183:
Singaporean IPhO team with the current IPhO president
Rajdeep Singh Rawat
2932:
3337:
3074:
Minutes of the
Meetings of the International Board during the IPhO 2013
2593:
2515:
2298:
2269:
2169:
2017:
1843:
1590:
1542:
1071:
939:
774:
642:
609:
510:
261:
130:
2912:"iPhO - Statutes of the International Physics Olympiads and Syllabus"
2838:
2452:
2373:
2348:
2244:
2092:
2067:
1967:
1769:
1715:
1480:
1365:
1277:
1203:
1137:
840:
444:
378:
285:
276:
257:
240:
145:
141:
2623:
2568:
2294:
2194:
1301:
906:
543:
345:
295:
178:
170:
2042:
1891:
1667:
1253:
708:
268:
248:
3406:
18:
2944:
2942:
175:
Students at the opening ceremony of the 2018 IPhO in Portugal
2886:
3365:
3089:"Secretariat, Advisory Committee & International Board"
2987:
3281:
3395:
3351:
3306:
3263:
2887:"IPhO - The International Physics Olympiad, Singapore"
2867:
International Olympiad on Astronomy and Astrophysics
3023:
3021:
3019:
49:. Unsourced material may be challenged and removed.
1348:Not held as no country was willing to organise it.
3029:"Statutes of the International Physics Olympiads"
2857:International Young Physicists' Tournament (IYPT)
16:Physics competition for secondary school students
2961:
2959:
3083:
3081:
203:countries were invited, and the five countries
3322:"（IPhO準備会議終了．国際物理オリンピックは2022年に東京で開催．出題委員長を拝命）"
3418:
332:Gold in Last 10 Contests (updated till 2024)
8:
2988:"International Physics Olympiad (IPhO) 2021"
199:. Some months prior to the competition, all
191:countries, inspired by the 1959 established
2852:International Olympiads in various sciences
3425:
3411:
3403:
310:
3320:ryugo hayano 💉💉😷 (25 December 2015).
109:Learn how and when to remove this message
3239:"Minute of the International Board 2017"
3150:"IPhO 2000 Results – Gold Medal Holders"
1167:
2878:
2841:uses Chinese Taipei as their team name.
3144:
3142:
3140:
2950:"IPhO Documentations, History of IPhO"
3125:
3123:
3121:
3119:
2933:"IPhO history By Waldemar Gorzkowski"
2432:Akihiro Watanabe (Japan), experiment
7:
2149:Jonathan Pradana Mailoa (Indonesia)
243:joined the competition as the first
134:competition for high school students
47:adding citations to reliable sources
676:Union of Soviet Socialist Republics
193:International Mathematical Olympiad
2072:Pavel Batrachenko (United States)
1696:Conrad McDonnell (United Kingdom)
14:
3500:Astronomy and Astrophysics (IOAA)
1774:Timour Tchoutenko (Soviet Union)
1523:Aleksandr Goutine (Soviet Union)
1282:Mikhaïl Volochine (Soviet Union)
1234:Mojmír Simerský (Czechoslovakia)
2543:2022 Russian invasion of Ukraine
2097:Alexander Mikhalychev (Belarus)
1130:
1097:
1064:
1031:
998:
965:
932:
899:
866:
833:
800:
767:
734:
701:
668:
635:
602:
569:
536:
503:
470:
437:
404:
371:
338:
58:"International Physics Olympiad"
23:
1624:Patrik Španĕl (Czechoslovakia)
138:International Science Olympiads
34:needs additional citations for
3526:International Science Olympiad
3434:International Science Olympiad
2579:35.60 / 25.20 / 17.40 / 13.40
2463:35.00 / 27.20 / 17.80 / 14.05
2438:28.01 / 21.30 / 14.70 / 11.12
2409:39.80 / 30.70 / 22.70 / 17.50
2395:Switzerland and Liechtenstein
2384:42.20 / 30.00 / 24.00 / 18.00
2280:41.10 / 34.50 / 24.62 / 18.00
2255:38.10 / 30.95 / 22.35 / 16.80
2230:33.35 / 25.10 / 17.45 / 13.05
1485:Maksim Tsipine (Soviet Union)
1447:Jiří Svoboda (Czechoslovakia)
1306:Karel Šafařík (Czechoslovakia)
140:. The first IPhO was held in
123:International Physics Olympiad
1:
2604:33.92 / 19.35 / 12.49 / 9.03
2554:23.75 / 16.05 / 11.65 / 7.15
2527:33.37 / 23.74 / 14.50 / 9.15
2359:27.21 / 18.40 / 12.70 / 9.15
2174:Choi Youngjoon (South Korea)
1972:Konstantin Kravtsov (Russia)
2378:Taehyoung Kim (South Korea)
2022:Daniyar Nourgaliev (Russia)
1672:Catalin Malureanu (Romania)
1547:Manfred Lehn (West Germany)
1258:Mojmír Šob (Czechoslovakia)
1153:
1147:
1144:
1141:
1120:
1114:
1111:
1108:
1087:
1081:
1078:
1075:
1054:
1048:
1045:
1042:
1021:
1015:
1012:
1009:
988:
982:
979:
976:
955:
949:
946:
943:
922:
916:
913:
910:
889:
883:
880:
877:
856:
850:
847:
844:
823:
817:
814:
811:
790:
784:
781:
778:
757:
751:
748:
745:
724:
718:
715:
712:
691:
685:
682:
679:
658:
652:
649:
646:
625:
619:
616:
613:
592:
586:
583:
580:
559:
553:
550:
547:
526:
520:
517:
514:
493:
487:
484:
481:
460:
454:
451:
448:
427:
421:
418:
415:
394:
388:
385:
382:
361:
355:
352:
349:
3131:"www.ipho-new.org official"
2521:Kyungmin Kim (South Korea)
2430:Haoyang Gao (China), theory
1648:Oleg Volkov (Soviet Union)
300:Gold medal of the IPhO 2019
254:Federal Republic of Germany
3549:
2801:
2769:
2737:
2705:
2673:
2641:
2607:
2582:
2557:
2530:
2504:
2466:
2441:
2412:
2387:
2362:
2337:
2334:38.6 / 29.5 / 21.5 / 16.7
2312:
2309:31.0 / 23.9 / 17.2 / 12.4
2283:
2258:
2233:
2208:
2183:
2158:
2133:
2106:
2081:
2056:
2047:Ngoc Duong Dang (Vietnam)
2031:
2006:
1981:
1956:
1928:
1920:Sayed Mehdi Anvari (Iran)
1904:
1880:
1856:
1832:
1824:Harald Pfeiffer (Germany)
1806:
1782:
1758:
1731:
1704:
1680:
1656:
1632:
1608:
1579:
1555:
1531:
1507:
1469:
1431:
1407:
1380:
1354:
1316:
1308:Ádám Tichy-Rács (Hungary)
1290:
1266:
1242:
1232:Tomasz Kręglewski (Poland)
1216:
1192:
229:German Democratic Republic
3440:
2496:
1600:Sorin Spânoche (Romania)
1499:
1461:
1370:Jarosław Deminet (Poland)
1346:
1189:Medal cutoffs (G/S/B/HM)
3180:"Official final ranking"
2124:Lin Ying-hsuan (Taiwan)
1372:Jerzy Tarasiuk (Poland)
1208:Sándor Szalay (Hungary)
709:Islamic Republic of Iran
3154:University of Leicester
2967:"IPho - Documentations"
2328:Attila Szabó (Hungary)
2303:Attila Szabó (Hungary)
1571:Ivan Ivanov (Bulgaria)
1332:Zoltán Szabó (Hungary)
2862:Asian Physics Olympiad
2274:Hsu Tzu-ming (Taiwan)
2122:Gábor Halász (Hungary)
301:
292:Distribution of medals
184:
176:
3490:Junior Science (IJSO)
2598:Zhang Xinrui (China)
2482:Xiangkai Sun (China)
2457:Yang Tianhua (China)
1423:Rafał Łubis (Poland)
299:
182:
174:
3521:Physics competitions
3495:Earth Science (IESO)
3352:"IPhO 2023 homepage"
3160:on 20 September 2000
2403:Mao Chenkai (China)
2199:Tan Longzhi (China)
1748:Alexander H. Barnett
43:improve this article
3282:"IPhO 2022 Website"
3243:IPhO Documentations
3103:"List of Countries"
2224:Shi Handuo (China)
1848:Yang Liang (China)
1822:Zhang Junan (China)
136:. It is one of the
2837:In some contests,
2548:Guowei Xu (China)
2353:Xiaoyu Xu (China)
2249:Yu Yichao (China)
2205:33 / 26 / 21 / 14
2180:44 / 38 / 33 / 22
2155:37 / 29 / 21 / 14
2130:45 / 41 / 33 / 21
2103:39 / 34 / 25 / 18
2078:33 / 27 / 22 / 16
2053:36 / 32 / 24 / 16
2028:42 / 36 / 30 / 23
2003:37 / 32 / 27 / 20
1978:43 / 37 / 31 / 24
1953:42 / 36 / 30 / 23
1896:Liu Yurun (China)
1872:Yu Haitao (China)
329:Honorable mentions
302:
197:Czesław Ścisłowski
185:
177:
3508:
3507:
3485:Linguistics (IOL)
3460:Informatics (IOI)
3445:Mathematics (IMO)
2834:
2833:
2573:Bowen Yu (China)
1798:Chen Han (China)
1750:(United Kingdom)
1161:
1160:
119:
118:
111:
93:
3538:
3475:Geography (iGeo)
3470:Philosophy (IPO)
3455:Chemistry (IChO)
3427:
3420:
3413:
3404:
3399:
3398:
3396:Official website
3381:
3380:
3378:
3376:
3362:
3356:
3355:
3348:
3342:
3341:
3335:
3333:
3317:
3311:
3310:
3303:
3297:
3296:
3294:
3292:
3278:
3272:
3271:
3260:
3254:
3253:
3251:
3249:
3235:
3229:
3228:
3221:
3215:
3214:
3207:
3201:
3200:
3193:
3187:
3186:
3184:
3176:
3170:
3169:
3167:
3165:
3156:. Archived from
3146:
3135:
3134:
3127:
3114:
3113:
3111:
3109:
3099:
3093:
3092:
3085:
3076:
3071:
3065:
3064:
3062:
3060:
3054:
3048:. Archived from
3047:
3039:
3033:
3032:
3025:
3014:
3009:
3003:
3002:
3000:
2998:
2984:
2978:
2977:
2975:
2973:
2963:
2954:
2953:
2946:
2937:
2936:
2929:
2923:
2922:
2920:
2918:
2908:
2902:
2901:
2899:
2897:
2891:www.ipho-new.org
2883:
1997:Lu Ying (China)
1723:(United States)
1397:Sergey Korshunov
1183:Absolute winner
1168:
1136:
1134:
1133:
1103:
1101:
1100:
1070:
1068:
1067:
1037:
1035:
1034:
1004:
1002:
1001:
971:
969:
968:
938:
936:
935:
905:
903:
902:
872:
870:
869:
839:
837:
836:
806:
804:
803:
773:
771:
770:
740:
738:
737:
707:
705:
704:
674:
672:
671:
641:
639:
638:
608:
606:
605:
575:
573:
572:
542:
540:
539:
509:
507:
506:
476:
474:
473:
443:
441:
440:
410:
408:
407:
377:
375:
374:
344:
342:
341:
311:
201:Central European
114:
107:
103:
100:
94:
92:
51:
27:
19:
3548:
3547:
3541:
3540:
3539:
3537:
3536:
3535:
3511:
3510:
3509:
3504:
3480:Astronomy (IAO)
3436:
3431:
3394:
3393:
3390:
3385:
3384:
3374:
3372:
3370:www.ipho2024.ir
3364:
3363:
3359:
3350:
3349:
3345:
3331:
3329:
3328:) (in Japanese)
3319:
3318:
3314:
3305:
3304:
3300:
3290:
3288:
3280:
3279:
3275:
3262:
3261:
3257:
3247:
3245:
3237:
3236:
3232:
3223:
3222:
3218:
3209:
3208:
3204:
3195:
3194:
3190:
3182:
3178:
3177:
3173:
3163:
3161:
3148:
3147:
3138:
3129:
3128:
3117:
3107:
3105:
3101:
3100:
3096:
3087:
3086:
3079:
3072:
3068:
3058:
3056:
3055:on 13 July 2019
3052:
3045:
3041:
3040:
3036:
3027:
3026:
3017:
3010:
3006:
2996:
2994:
2992:www.ipho2021.lt
2986:
2985:
2981:
2971:
2969:
2965:
2964:
2957:
2948:
2947:
2940:
2931:
2930:
2926:
2916:
2914:
2910:
2909:
2905:
2895:
2893:
2885:
2884:
2880:
2875:
2848:
2431:
2429:
2123:
1989:United Kingdom
1823:
1640:United Kingdom
1599:
1439:Czechoslovakia
1399:(Soviet Union)
1371:
1307:
1250:Czechoslovakia
1233:
1166:
1131:
1129:
1098:
1096:
1065:
1063:
1032:
1030:
999:
997:
966:
964:
933:
931:
900:
898:
867:
865:
834:
832:
801:
799:
768:
766:
735:
733:
702:
700:
669:
667:
636:
634:
603:
601:
570:
568:
537:
535:
504:
502:
471:
469:
438:
436:
405:
403:
372:
370:
339:
337:
294:
245:Western country
169:
129:) is an annual
115:
104:
98:
95:
52:
50:
40:
28:
17:
12:
11:
5:
3546:
3545:
3542:
3534:
3533:
3528:
3523:
3513:
3512:
3506:
3505:
3503:
3502:
3497:
3492:
3487:
3482:
3477:
3472:
3467:
3462:
3457:
3452:
3450:Physics (IPhO)
3447:
3441:
3438:
3437:
3432:
3430:
3429:
3422:
3415:
3407:
3401:
3400:
3389:
3388:External links
3386:
3383:
3382:
3357:
3343:
3312:
3307:"IPhO Belarus"
3298:
3273:
3255:
3230:
3216:
3202:
3188:
3171:
3136:
3115:
3094:
3077:
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2686:
2681:
2678:
2672:
2671:
2669:
2664:
2659:
2654:
2649:
2646:
2640:
2639:
2637:
2632:
2627:
2620:
2615:
2612:
2606:
2605:
2602:
2599:
2596:
2591:
2588:
2585:
2581:
2580:
2577:
2574:
2571:
2566:
2563:
2560:
2556:
2555:
2552:
2549:
2546:
2539:
2536:
2533:
2529:
2528:
2525:
2522:
2519:
2513:
2510:
2507:
2503:
2502:
2500:
2495:
2492:
2489:
2488:
2486:
2483:
2480:
2475:
2472:
2469:
2465:
2464:
2461:
2458:
2455:
2450:
2447:
2444:
2440:
2439:
2436:
2433:
2426:
2421:
2418:
2415:
2411:
2410:
2407:
2404:
2401:
2396:
2393:
2390:
2386:
2385:
2382:
2379:
2376:
2371:
2368:
2365:
2361:
2360:
2357:
2354:
2351:
2346:
2343:
2340:
2336:
2335:
2332:
2329:
2326:
2321:
2318:
2315:
2311:
2310:
2307:
2304:
2301:
2292:
2289:
2286:
2282:
2281:
2278:
2275:
2272:
2267:
2264:
2261:
2257:
2256:
2253:
2250:
2247:
2242:
2239:
2236:
2232:
2231:
2228:
2225:
2222:
2217:
2214:
2211:
2207:
2206:
2203:
2200:
2197:
2192:
2189:
2186:
2182:
2181:
2178:
2175:
2172:
2167:
2164:
2161:
2157:
2156:
2153:
2150:
2147:
2142:
2139:
2136:
2132:
2131:
2128:
2125:
2120:
2115:
2112:
2109:
2105:
2104:
2101:
2098:
2095:
2090:
2087:
2084:
2080:
2079:
2076:
2073:
2070:
2065:
2062:
2059:
2055:
2054:
2051:
2048:
2045:
2040:
2037:
2034:
2030:
2029:
2026:
2023:
2020:
2015:
2012:
2009:
2005:
2004:
2001:
1998:
1995:
1990:
1987:
1984:
1980:
1979:
1976:
1973:
1970:
1965:
1962:
1959:
1955:
1954:
1951:
1948:
1942:
1937:
1934:
1931:
1927:
1926:
1924:
1921:
1918:
1913:
1910:
1907:
1903:
1902:
1900:
1897:
1894:
1889:
1886:
1883:
1879:
1878:
1876:
1873:
1870:
1865:
1862:
1859:
1855:
1854:
1852:
1849:
1846:
1841:
1838:
1835:
1831:
1830:
1828:
1825:
1820:
1815:
1814:United States
1812:
1809:
1805:
1804:
1802:
1799:
1796:
1791:
1788:
1785:
1781:
1780:
1778:
1775:
1772:
1767:
1764:
1761:
1757:
1756:
1754:
1751:
1745:
1740:
1737:
1734:
1730:
1729:
1727:
1724:
1718:
1713:
1710:
1707:
1703:
1702:
1700:
1697:
1694:
1689:
1686:
1683:
1679:
1678:
1676:
1673:
1670:
1665:
1662:
1659:
1655:
1654:
1652:
1649:
1646:
1641:
1638:
1635:
1631:
1630:
1628:
1625:
1622:
1617:
1614:
1611:
1607:
1606:
1604:
1601:
1593:
1588:
1585:
1582:
1578:
1577:
1575:
1572:
1569:
1564:
1561:
1558:
1554:
1553:
1551:
1548:
1545:
1540:
1537:
1534:
1530:
1529:
1527:
1524:
1521:
1516:
1513:
1510:
1506:
1505:
1503:
1498:
1495:
1492:
1491:
1489:
1486:
1483:
1478:
1475:
1472:
1468:
1467:
1465:
1460:
1457:
1454:
1453:
1451:
1448:
1445:
1443:Hradec Králové
1440:
1437:
1434:
1430:
1429:
1427:
1424:
1421:
1416:
1413:
1410:
1406:
1405:
1403:
1400:
1394:
1389:
1386:
1383:
1379:
1378:
1376:
1373:
1368:
1363:
1360:
1357:
1353:
1352:
1350:
1345:
1342:
1339:
1338:
1336:
1333:
1330:
1325:
1322:
1319:
1315:
1314:
1312:
1309:
1304:
1299:
1296:
1293:
1289:
1288:
1286:
1283:
1280:
1275:
1272:
1269:
1265:
1264:
1262:
1259:
1256:
1251:
1248:
1245:
1241:
1240:
1238:
1235:
1230:
1225:
1222:
1219:
1215:
1214:
1212:
1209:
1206:
1201:
1198:
1195:
1191:
1190:
1187:
1184:
1181:
1178:
1175:
1172:
1165:
1162:
1159:
1158:
1155:
1152:
1149:
1146:
1143:
1140:
1126:
1125:
1122:
1119:
1116:
1113:
1110:
1107:
1105:United Kingdom
1093:
1092:
1089:
1086:
1083:
1080:
1077:
1074:
1060:
1059:
1056:
1053:
1050:
1047:
1044:
1041:
1027:
1026:
1023:
1020:
1017:
1014:
1011:
1008:
1006:Czechoslovakia
994:
993:
990:
987:
984:
981:
978:
975:
961:
960:
957:
954:
951:
948:
945:
942:
928:
927:
924:
921:
918:
915:
912:
909:
895:
894:
891:
888:
885:
882:
879:
876:
862:
861:
858:
855:
852:
849:
846:
843:
829:
828:
825:
822:
819:
816:
813:
810:
796:
795:
792:
789:
786:
783:
780:
777:
763:
762:
759:
756:
753:
750:
747:
744:
730:
729:
726:
723:
720:
717:
714:
711:
697:
696:
693:
690:
687:
684:
681:
678:
664:
663:
660:
657:
654:
651:
648:
645:
631:
630:
627:
624:
621:
618:
615:
612:
598:
597:
594:
591:
588:
585:
582:
579:
565:
564:
561:
558:
555:
552:
549:
546:
532:
531:
528:
525:
522:
519:
516:
513:
499:
498:
495:
492:
489:
486:
483:
480:
466:
465:
462:
459:
456:
453:
450:
447:
433:
432:
429:
426:
423:
420:
417:
414:
400:
399:
396:
393:
390:
387:
384:
381:
367:
366:
363:
360:
357:
354:
351:
348:
334:
333:
330:
327:
324:
321:
318:
315:
293:
290:
209:Czechoslovakia
168:
165:
117:
116:
31:
29:
22:
15:
13:
10:
9:
6:
4:
3:
2:
3544:
3543:
3532:
3531:Annual events
3529:
3527:
3524:
3522:
3519:
3518:
3516:
3501:
3498:
3496:
3493:
3491:
3488:
3486:
3483:
3481:
3478:
3476:
3473:
3471:
3468:
3466:
3465:Biology (IBO)
3463:
3461:
3458:
3456:
3453:
3451:
3448:
3446:
3443:
3442:
3439:
3435:
3428:
3423:
3421:
3416:
3414:
3409:
3408:
3405:
3397:
3392:
3391:
3387:
3371:
3367:
3361:
3358:
3353:
3347:
3344:
3339:
3327:
3323:
3316:
3313:
3308:
3302:
3299:
3287:
3283:
3277:
3274:
3269:
3265:
3259:
3256:
3244:
3240:
3234:
3231:
3226:
3220:
3217:
3212:
3206:
3203:
3198:
3192:
3189:
3181:
3175:
3172:
3159:
3155:
3151:
3145:
3143:
3141:
3137:
3132:
3126:
3124:
3122:
3120:
3116:
3104:
3098:
3095:
3090:
3084:
3082:
3078:
3075:
3070:
3067:
3051:
3044:
3038:
3035:
3030:
3024:
3022:
3020:
3016:
3013:
3008:
3005:
2993:
2989:
2983:
2980:
2968:
2962:
2960:
2956:
2951:
2945:
2943:
2939:
2934:
2928:
2925:
2913:
2907:
2904:
2892:
2888:
2882:
2879:
2872:
2868:
2865:
2863:
2860:
2858:
2855:
2853:
2850:
2849:
2845:
2840:
2836:
2835:
2830:
2828:
2825:
2823:
2820:
2818:
2815:
2813:
2810:
2807:
2805:
2802:
2798:
2796:
2793:
2791:
2788:
2786:
2783:
2781:
2778:
2775:
2773:
2770:
2766:
2764:
2761:
2759:
2756:
2754:
2751:
2749:
2746:
2743:
2741:
2738:
2734:
2732:
2729:
2727:
2724:
2722:
2719:
2717:
2714:
2711:
2709:
2706:
2702:
2700:
2697:
2695:
2692:
2690:
2687:
2685:
2682:
2679:
2677:
2674:
2670:
2668:
2665:
2663:
2660:
2658:
2655:
2653:
2650:
2647:
2645:
2642:
2638:
2636:
2633:
2631:
2628:
2626:
2625:
2621:
2619:
2616:
2613:
2611:
2608:
2603:
2600:
2597:
2595:
2592:
2589:
2586:
2583:
2578:
2575:
2572:
2570:
2567:
2564:
2561:
2558:
2553:
2550:
2547:
2544:
2540:
2537:
2534:
2531:
2526:
2523:
2520:
2517:
2514:
2511:
2508:
2505:
2501:
2499:
2493:
2491:
2490:
2487:
2484:
2481:
2479:
2476:
2473:
2470:
2467:
2462:
2459:
2456:
2454:
2451:
2448:
2445:
2442:
2437:
2434:
2427:
2425:
2422:
2419:
2416:
2413:
2408:
2405:
2402:
2400:
2397:
2394:
2391:
2388:
2383:
2380:
2377:
2375:
2372:
2369:
2366:
2363:
2358:
2355:
2352:
2350:
2347:
2344:
2341:
2338:
2333:
2330:
2327:
2325:
2322:
2319:
2316:
2313:
2308:
2305:
2302:
2300:
2296:
2293:
2290:
2287:
2284:
2279:
2276:
2273:
2271:
2268:
2265:
2262:
2259:
2254:
2251:
2248:
2246:
2243:
2240:
2237:
2234:
2229:
2226:
2223:
2221:
2218:
2215:
2212:
2209:
2204:
2201:
2198:
2196:
2193:
2190:
2187:
2184:
2179:
2176:
2173:
2171:
2168:
2165:
2162:
2159:
2154:
2151:
2148:
2146:
2143:
2140:
2137:
2134:
2129:
2126:
2121:
2119:
2116:
2113:
2110:
2107:
2102:
2099:
2096:
2094:
2091:
2088:
2085:
2082:
2077:
2074:
2071:
2069:
2066:
2063:
2060:
2057:
2052:
2049:
2046:
2044:
2041:
2038:
2035:
2032:
2027:
2024:
2021:
2019:
2016:
2013:
2010:
2007:
2002:
1999:
1996:
1994:
1991:
1988:
1985:
1982:
1977:
1974:
1971:
1969:
1966:
1963:
1960:
1957:
1952:
1949:
1946:
1943:
1941:
1938:
1935:
1932:
1929:
1925:
1922:
1919:
1917:
1914:
1911:
1908:
1905:
1901:
1898:
1895:
1893:
1890:
1887:
1884:
1881:
1877:
1874:
1871:
1869:
1866:
1863:
1860:
1857:
1853:
1850:
1847:
1845:
1842:
1839:
1836:
1833:
1829:
1826:
1821:
1819:
1816:
1813:
1810:
1807:
1803:
1800:
1797:
1795:
1792:
1789:
1786:
1783:
1779:
1776:
1773:
1771:
1768:
1765:
1762:
1759:
1755:
1752:
1749:
1746:
1744:
1741:
1738:
1735:
1732:
1728:
1725:
1722:
1721:Steven Gubser
1719:
1717:
1714:
1711:
1708:
1705:
1701:
1698:
1695:
1693:
1690:
1687:
1684:
1681:
1677:
1674:
1671:
1669:
1666:
1664:East Germany
1663:
1660:
1657:
1653:
1650:
1647:
1645:
1644:London-Harrow
1642:
1639:
1636:
1633:
1629:
1626:
1623:
1621:
1618:
1615:
1612:
1609:
1605:
1602:
1598:(Netherlands)
1597:
1594:
1592:
1589:
1586:
1583:
1580:
1576:
1573:
1570:
1568:
1565:
1562:
1559:
1556:
1552:
1549:
1546:
1544:
1541:
1539:West Germany
1538:
1535:
1532:
1528:
1525:
1522:
1520:
1517:
1514:
1511:
1508:
1504:
1502:
1496:
1494:
1493:
1490:
1487:
1484:
1482:
1479:
1477:Soviet Union
1476:
1473:
1470:
1466:
1464:
1458:
1456:
1455:
1452:
1449:
1446:
1444:
1441:
1438:
1435:
1432:
1428:
1425:
1422:
1420:
1417:
1414:
1411:
1408:
1404:
1401:
1398:
1395:
1393:
1390:
1388:East Germany
1387:
1384:
1381:
1377:
1374:
1369:
1367:
1364:
1361:
1358:
1355:
1351:
1349:
1343:
1341:
1340:
1337:
1334:
1331:
1329:
1326:
1323:
1320:
1317:
1313:
1310:
1305:
1303:
1300:
1297:
1294:
1291:
1287:
1284:
1281:
1279:
1276:
1274:Soviet Union
1273:
1270:
1267:
1263:
1260:
1257:
1255:
1252:
1249:
1246:
1243:
1239:
1236:
1231:
1229:
1226:
1223:
1220:
1217:
1213:
1210:
1207:
1205:
1202:
1199:
1196:
1193:
1188:
1185:
1182:
1179:
1177:Host country
1176:
1173:
1170:
1169:
1163:
1156:
1150:
1139:
1128:
1127:
1123:
1117:
1106:
1095:
1094:
1090:
1084:
1073:
1062:
1061:
1057:
1051:
1040:
1029:
1028:
1024:
1018:
1007:
996:
995:
991:
985:
974:
963:
962:
958:
952:
941:
930:
929:
925:
919:
908:
897:
896:
892:
886:
875:
864:
863:
859:
853:
842:
831:
830:
826:
820:
809:
798:
797:
793:
787:
776:
765:
764:
760:
754:
743:
732:
731:
727:
721:
710:
699:
698:
694:
688:
677:
666:
665:
661:
655:
644:
633:
632:
628:
622:
611:
600:
599:
595:
589:
578:
567:
566:
562:
556:
545:
534:
533:
529:
523:
512:
501:
500:
496:
490:
479:
478:United States
468:
467:
463:
457:
446:
435:
434:
430:
424:
413:
402:
401:
397:
391:
380:
369:
368:
364:
358:
347:
336:
335:
331:
328:
325:
322:
319:
316:
313:
312:
309:
306:
298:
291:
289:
287:
281:
278:
274:
270:
265:
263:
259:
255:
250:
246:
242:
238:
234:
230:
225:
222:
218:
214:
210:
206:
202:
198:
194:
190:
181:
173:
166:
164:
162:
158:
153:
149:
147:
143:
139:
135:
132:
128:
124:
113:
110:
102:
91:
88:
84:
81:
77:
74:
70:
67:
63:
60: –
59:
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
3449:
3373:. Retrieved
3369:
3360:
3346:
3336:– via
3330:. Retrieved
3315:
3301:
3289:. Retrieved
3286:ipho2022.com
3285:
3276:
3267:
3258:
3246:. Retrieved
3242:
3233:
3219:
3205:
3191:
3174:
3162:. Retrieved
3158:the original
3106:. Retrieved
3097:
3069:
3057:. Retrieved
3050:the original
3037:
3007:
2995:. Retrieved
2991:
2982:
2970:. Retrieved
2927:
2915:. Retrieved
2906:
2894:. Retrieved
2890:
2881:
2826:
2821:
2816:
2811:
2803:
2794:
2789:
2784:
2779:
2771:
2762:
2757:
2752:
2747:
2739:
2730:
2725:
2720:
2715:
2707:
2698:
2693:
2688:
2683:
2675:
2666:
2661:
2656:
2651:
2643:
2634:
2629:
2622:
2617:
2609:
2538:Switzerland
2497:
2089:South Korea
1818:Williamsburg
1739:Netherlands
1500:
1462:
1347:
307:
303:
282:
266:
233:Soviet Union
226:
189:Eastern Bloc
186:
154:
150:
126:
122:
120:
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
3366:"IPhO 2024"
3268:i20.mipt.ru
3248:30 November
2716:South Korea
2345:Kazakhstan
1616:Yugoslavia
1596:Jan de Boer
412:South Korea
157:theoretical
3515:Categories
2997:15 October
2972:15 October
2873:References
2812:Bangladesh
2512:Lithuania
2424:Yogyakarta
2420:Indonesia
2324:Copenhagen
2141:Singapore
2039:Indonesia
1864:Australia
1180:Host city
1039:Kazakhstan
237:Yugoslavia
99:March 2018
69:newspapers
3332:3 October
2601:46.38/50
2576:45.20/50
2551:43.20/50
2524:46.25/50
2518:(online)
2485:43.50/50
2460:46.80/50
2449:Portugal
2428:Uncertain
2406:48.10/50
2381:48.30/50
2356:41.20/50
2331:47.00/50
2306:45.80/50
2277:48.60/50
2266:Thailand
2252:48.65/50
2227:48.20/50
2202:44.60/50
2177:48.80/50
2152:47.20/50
2145:Singapore
2127:49.50/50
2118:Salamanca
2100:47.70/50
2075:42.30/50
2050:45.40/50
2025:47.55/50
2000:43.40/50
1993:Leicester
1975:49.80/50
1950:47.50/50
1945:Chen Yuao
1940:Reykjavík
1923:47.25/50
1899:47.50/50
1827:40.65/50
1743:Groningen
1726:46.33/50
1699:39.38/50
1692:Bad Ischl
1574:43.75/50
1567:Bucharest
1515:Bulgaria
1328:Bucharest
1298:Bulgaria
874:Hong Kong
808:Indonesia
577:Singapore
161:practical
148:in 1967.
3164:12 March
2846:See also
2652:Colombia
2478:Tel Aviv
2320:Denmark
2291:Estonia
2241:Croatia
2191:Vietnam
1947:(China)
1936:Iceland
1868:Canberra
1851:44.3/50
1794:Helsinki
1790:Finland
1777:48.2/50
1753:45.7/50
1688:Austria
1651:37.9/50
1627:42.5/50
1620:Portorož
1563:Romania
1426:47.5/50
1419:Budapest
1415:Hungary
1324:Romania
1311:48.6/60
1228:Budapest
1224:Hungary
973:Bulgaria
742:Thailand
273:American
205:Bulgaria
3338:Twitter
3291:27 July
3108:29 July
3059:31 July
2748:Ecuador
2684:Hungary
2594:Isfahan
2516:Vilnius
2474:Israel
2299:Tallinn
2270:Bangkok
2216:Mexico
2170:Isfahan
2064:Taiwan
2018:Antalya
2014:Turkey
1916:Sudbury
1912:Canada
1888:Norway
1875:95/100
1844:Beijing
1712:Poland
1591:Sigtuna
1587:Sweden
1543:Malente
1392:Güstrow
1362:Poland
1200:Poland
1171:Number
1164:Summary
1072:Belarus
940:Ukraine
775:Germany
643:Vietnam
610:Hungary
511:Romania
323:Bronze
314:Country
277:African
262:Finland
221:Romania
213:Hungary
167:History
131:physics
83:scholar
3375:10 May
3264:"Home"
2917:3 July
2896:3 July
2839:Taiwan
2780:Russia
2618:France
2565:Japan
2453:Lisbon
2399:Zürich
2374:Mumbai
2370:India
2349:Astana
2245:Zagreb
2220:Mérida
2114:Spain
2093:Pohang
2068:Taipei
1968:Padova
1964:Italy
1840:China
1801:44/50
1770:Havana
1716:Warsaw
1675:49/50
1603:43/50
1550:43/50
1526:47/50
1488:43/50
1481:Moscow
1450:49/50
1402:43/50
1375:46/50
1366:Warsaw
1335:57/60
1285:57/60
1278:Moscow
1261:48/48
1237:35/40
1211:39/40
1204:Warsaw
1186:Score
1138:Turkey
1135:
1102:
1069:
1036:
1003:
970:
937:
904:
871:
841:Poland
838:
805:
772:
739:
706:
673:
640:
607:
574:
541:
508:
475:
445:Taiwan
442:
409:
379:Russia
376:
343:
320:Silver
286:UNESCO
258:Sweden
241:France
231:, the
217:Poland
146:Poland
142:Warsaw
85:
78:
71:
64:
56:
3326:Tweet
3183:(PDF)
3053:(PDF)
3046:(PDF)
2808:2041
2776:2030
2744:2029
2712:2028
2680:2027
2648:2026
2624:Paris
2614:2025
2590:Iran
2587:2024
2569:Tokyo
2562:2023
2535:2022
2509:2021
2494:2020
2471:2019
2446:2018
2417:2017
2392:2016
2367:2015
2342:2014
2317:2013
2295:Tartu
2288:2012
2263:2011
2238:2010
2213:2009
2195:Hanoi
2188:2008
2166:Iran
2163:2007
2138:2006
2111:2005
2086:2004
2061:2003
2036:2002
2011:2001
1986:2000
1961:1999
1933:1998
1909:1997
1885:1996
1861:1995
1837:1994
1811:1993
1787:1992
1766:Cuba
1763:1991
1736:1990
1709:1989
1685:1988
1661:1987
1637:1986
1613:1985
1584:1984
1560:1983
1536:1982
1519:Varna
1512:1981
1497:1980
1474:1979
1459:1978
1436:1977
1412:1976
1385:1975
1359:1974
1344:1973
1321:1972
1302:Sofia
1295:1971
1271:1970
1247:1969
1221:1968
1197:1967
1174:Year
907:Japan
544:India
346:China
326:Total
269:Asian
90:JSTOR
76:books
3377:2024
3334:2021
3293:2022
3250:2022
3166:2015
3110:2023
3061:2019
2999:2021
2974:2021
2919:2022
2898:2022
2297:and
2043:Bali
1892:Oslo
1668:Jena
1254:Brno
620:102
317:Gold
271:and
260:and
249:Cuba
247:and
235:and
219:and
155:The
127:IPhO
121:The
62:news
2827:TBD
2822:TBD
2817:TBD
2795:TBD
2790:TBD
2785:TBD
2763:TBD
2758:TBD
2753:TBD
2731:TBD
2726:TBD
2721:TBD
2699:TBD
2694:TBD
2689:TBD
2667:TBD
2662:TBD
2657:TBD
2635:TBD
2630:TBD
2584:54
2559:53
2532:52
2506:51
2468:50
2443:49
2414:48
2389:47
2364:46
2339:45
2314:44
2285:43
2260:42
2235:41
2210:40
2185:39
2160:38
2135:37
2108:36
2083:35
2058:34
2033:33
2008:32
1983:31
1958:30
1930:29
1906:28
1882:27
1858:26
1834:25
1808:24
1784:23
1760:22
1733:21
1706:20
1682:19
1658:18
1634:17
1610:16
1581:15
1557:14
1533:13
1509:12
1471:11
1433:10
1151:146
1148:53
1118:149
1115:83
1085:102
1082:53
1049:28
1025:NA
1016:29
986:146
983:85
953:137
950:60
926:11
917:20
893:11
884:27
854:160
851:84
821:117
818:46
788:194
785:80
761:12
755:109
752:22
722:148
719:39
695:NA
686:22
662:29
656:147
653:49
623:215
596:24
590:123
587:27
563:23
557:118
554:14
530:26
524:213
521:62
497:32
491:158
488:29
464:35
458:132
455:18
431:47
425:140
422:24
398:48
392:153
389:10
365:55
359:181
350:151
45:by
3517::
3368:.
3284:.
3266:.
3241:.
3152:.
3139:^
3118:^
3080:^
3018:^
2990:.
2958:^
2941:^
2889:.
2804:71
2772:60
2740:59
2708:58
2676:57
2644:56
2610:55
2545:.
1409:9
1382:8
1356:7
1318:6
1292:5
1268:4
1244:3
1218:2
1194:1
1157:3
1154:32
1145:53
1142:13
1124:2
1121:22
1112:53
1109:13
1091:5
1088:25
1079:35
1076:14
1058:6
1055:25
1052:93
1046:46
1043:14
1022:27
1019:68
1013:24
1010:15
992:1
989:62
980:46
977:15
959:4
956:13
947:58
944:19
920:81
914:40
911:21
887:91
881:43
878:21
860:3
857:68
848:52
845:24
827:6
824:24
815:43
812:28
794:3
791:27
782:83
779:31
758:18
749:50
746:37
728:7
725:12
716:72
713:37
692:12
689:89
683:26
680:41
659:18
650:54
647:44
629:6
626:35
617:68
614:45
593:25
584:47
581:49
551:53
548:51
527:30
518:89
515:61
494:11
485:51
482:78
452:34
449:80
419:28
416:88
386:47
383:96
356:9
353:21
256:,
215:,
211:,
207:,
144:,
3426:e
3419:t
3412:v
3379:.
3354:.
3340:.
3324:(
3309:.
3295:.
3270:.
3252:.
3227:.
3213:.
3199:.
3185:.
3168:.
3133:.
3112:.
3091:.
3063:.
3031:.
3001:.
2976:.
2952:.
2935:.
2921:.
2900:.
923:4
890:3
560:7
461:8
428:7
395:4
362:2
125:(
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
39:.
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