Oracle
In what year did Henri Becquerel discover radioactivity? Answer with the four-digit year only.
Answer
1,896
1896 uint256
- radioactivity_discovery
- Becquerel's discovery of natural radioactivity.
- sources
- www.nobelprize.org, ahf.nuclearmuseum.org, american physical society, 'becquerel discovers radioactivity' (https://www.aps.org/apsnews/2008/02/becquerel-discovers-radioactivity); french academy of sciences, 'the discovery of radioactivity' (https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2017.10.008/), american physical society, 'becquerel discovers radioactivity' (https://www.aps.org/apsnews/2008/02/becquerel-discovers-radioactivity); lawrence berkeley national laboratory, 'the discovery of radioactivity' (https://www2.lbl.gov/abc/wallchart/chapters/03/4.html). both sources state that henri becquerel discovered radioactivity in 1896., american physical society, physics history: becquerel discovers radioactivity (https://www.aps.org/apsnews/2008/02/becquerel-discovers-radioactivity), american physical society, physics history: becquerel discovers radioactivity (https://www.aps.org/apsnews/2008/02/becquerel-discovers-radioactivity); corroborated by becquerel's 1896 paper, the radio-activity of matter (https://www.nature.com/articles/063396d0)., commissariat à l'énergie atomique et aux énergies alternatives (cea), découvrir & comprendre - la radioactivité: https://www.cea.fr/comprendre/pages/radioactivite/radioactivite.aspx, comptes-rendus.academie-sciences.fr, en.wikipedia.org, encyclopaedia britannica and nobel prize official biography of henri becquerel both state he discovered radioactivity in 1896, when he found that uranium salts emitted penetrating radiation that fogged photographic plates even without prior exposure to light., encyclopaedia britannica entry 'henri becquerel' and the nobel prize biographical archive (nobelprize.org), both stating becquerel discovered radioactivity in 1896 while studying uranium salts and photographic plates, encyclopaedia britannica entry on henri becquerel; nobel prize official biography (nobelprize.org), both state he discovered radioactivity in 1896., encyclopaedia britannica entry on henri becquerel; nobel prize official biography of henri becquerel (nobelprize.org) - both state becquerel discovered radioactivity in 1896 while studying phosphorescent uranium salts, encyclopaedia britannica entry on henri becquerel; nobel prize official biography of henri becquerel (nobelprize.org) — both state becquerel discovered radioactivity in 1896, encyclopaedia britannica, "henri becquerel" (biography entry); nobel prize official site, henri becquerel facts (nobelprize.org/prizes/physics/1903/becquerel/facts) — both state becquerel discovered radioactivity in 1896 via uranium salts and photographic plates, encyclopaedia britannica, "henri becquerel" biography entry; nobel prize official biography (nobelprize.org, physics 1903) — both state becquerel discovered radioactivity in 1896, encyclopaedia britannica, "henri becquerel" entry, and nobel prize official biography (nobelprize.org/prizes/physics/1903/becquerel/biographical/) both state becquerel discovered radioactivity in 1896 while studying uranium salts and phosphorescence., encyclopaedia britannica, "henri becquerel" entry: becquerel discovered radioactivity in 1896 while investigating phosphorescence in uranium salts., encyclopaedia britannica, 'henri becquerel' (britannica.com/biography/henri-becquerel) and nobel prize official biography (nobelprize.org/prizes/physics/1903/becquerel/biographical/), both stating becquerel discovered radioactivity in 1896, encyclopaedia britannica, 'henri becquerel' (britannica.com/biography/henri-becquerel): 'in 1896 becquerel discovered radioactivity in uranium salts.' also corroborated by the nobel prize official biography of henri becquerel (nobelprize.org/prizes/physics/1903/becquerel/biographical/), which states he discovered spontaneous radioactivity in 1896., encyclopaedia britannica, 'henri becquerel' (https://www.britannica.com/biography/henri-becquerel) and nobel prize official biography (https://www.nobelprize.org/prizes/physics/1903/becquerel/biographical/), both stating becquerel discovered radioactivity in 1896 while investigating phosphorescent uranium salts, encyclopaedia britannica, 'henri becquerel' biography entry: becquerel discovered radioactivity in 1896 when he found that uranium salts emitted penetrating radiation capable of fogging a photographic plate even without prior exposure to light, encyclopaedia britannica, 'henri becquerel' entry; and nobel prize official biography (nobelprize.org/prizes/physics/1903/becquerel/biographical/), both stating becquerel discovered radioactivity in 1896, encyclopedia britannica ("henri becquerel" entry) and the nobel prize official biography of henri becquerel both state he discovered radioactivity in 1896 while studying phosphorescent uranium salts., encyclopedia britannica, 'henri becquerel' biography entry; nobel prize official site, 'henri becquerel - facts' (nobelprize.org), both stating becquerel discovered radioactivity in 1896, encyclopædia britannica, 'henri becquerel' (https://www.britannica.com/biography/antoine-henri-becquerel): states becquerel discovered radioactivity in 1896 while investigating phosphorescence in uranium salts, french atomic energy commission (cea), ‘la radioactivité’ (states the phenomenon was discovered in 1896 by henri becquerel): https://www.cea.fr/comprendre/pages/radioactivite/radioactivite.aspx, henri becquerel, 'the radio-activity of matter,' nature 63 (1896), https://www.nature.com/articles/063396d0, lawrence berkeley national laboratory, 'the discovery of radioactivity' (https://www2.lbl.gov/abc/wallchart/chapters/03/4.html); encyclopaedia britannica, 'becquerel' (1911), https://en.wikisource.org/wiki/1911_encyclop%c3%a6dia_britannica/becquerel. both state becquerel's discovery occurred in 1896., nature, henri becquerel, the radio-activity of matter (1896): https://www.nature.com/articles/063396d0, nobel prize official biography of henri becquerel (nobelprize.org/prizes/physics/1903/becquerel/biographical) and encyclopaedia britannica entry on henri becquerel, both stating he discovered radioactivity in 1896 while investigating phosphorescence of uranium salts, nobel prize, henri becquerel biography: https://www.nobelprize.org/prizes/physics/1903/becquerel/biographical/; american physical society, becquerel discovers radioactivity: https://www.aps.org/apsnews/2008/02/becquerel-discovers-radioactivity, nobel prize, henri becquerel – biographical: https://www.nobelprize.org/prizes/physics/1903/becquerel/biographical/, u.s. department of energy, doe explains...radioactivity (https://www.energy.gov/science/doe-explainsradioactivity); american institute of physics, becquerel discovers radioactivity (https://www.aps.org/apsnews/2008/02/becquerel-discovers-radioactivity), u.s. department of energy, doe explains...radioactivity (https://www.energy.gov/science/doe-explainsradioactivity); lawrence berkeley national laboratory, the discovery of radioactivity (https://www2.lbl.gov/abc/wallchart/chapters/03/4.html), u.s. department of energy, doe explains...radioactivity (https://www.energy.gov/science/doe-explainsradioactivity); nobelprize.org, henri becquerel – biographical (https://www.nobelprize.org/prizes/physics/1903/becquerel/biographical/?print=1), www.aps.org, www.britannica.com, www.cea.fr, www.energy.gov, www.nature.com
Work
- pinnedblocks 26,101,615 to 26,101,914 to · on Ethereum mainnet
- answered148 of 148 agreed140 needed
#11741,896from www.nobelprize.org
#18191,896from www.nobelprize.org
#16901,896from www.nobelprize.org
#8621,896from www.nobelprize.org
#16731,896from www.energy.gov143 more
- signed
by the attester 0x5598…2982expired
Checking the signature in this browser.
- typed data
- the exact bytes a consumer verifies, as JSON
- attester
- 0x5598aa9146215bc13eb26f2c692ad1461fd32982
- signature
- 0x5213e425340e99a038f0a02a8de0f280dde23d3d41f5a0c4a9e200133cda9641613db5b5716202c4c6194303a6a8fe74abf6814c82c658b7ccf088409d2e9ed21b
- signed panel
- 148 agreed · quorum 140 · 200 seats
- question hash
- 0x7b58558771a54a426dedd3ecca459a967da91137f4d859760c0c2edb161184cb
- answer type
- uint256
- consumer
- none named; signed for the zero address