Archiu:FirstNeutrinoEventAnnotated.jpg
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FirstNeutrinoEventAnnotated.jpg ((675 × 506 pixels, tamany de l'archiu: 285 kB, MIME tipo: image/jpeg))
Summary
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English: The first use of a hydrogen bubble chamber to detect neutrinos, on November 13, 1970. A neutrino hit a proton in a hydrogen atom. The collision occurred at the point where three tracks emanate on the right of the photograph.
Français : Photographie historique de la première observation d'un neutrino dans une chambre à bulles d'hydrogène de 12 pieds (3,70 m.) du Zero Gradient Synchrotron, prise le 13 novembre 1970. Sur cette image, un neutrino invisible percute un proton, donnant naissance aux traces des particules résultant de la collision sur la droite de l'image : le neutrino se transforme en méson-mu (nom moderne: muon / lepton mu) (longue trace rectiligne centrale). La trace la plus courte au-dessus matérialise le chemin parcouru par le proton. La troisième trace est celle d'un méson-pi créé par la collision. |
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| Source | Image courtesy of Argonne National Laboratory |
| Author | Argonne National Laboratory |
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Licensing
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Federal Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| Data/Hora | Miniatura | Dimensions | Usuari | Descripció | |
|---|---|---|---|---|---|
| actual | 16:38 25 set 2011 | | 675 × 506 (285 kB) | wikimediacommons>Cropbot | upload cropped version, operated by User:Beao. Summary: cropped |
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