Fayl:PositronDiscovery.jpg

Vikipediya, azad ensiklopediya
Naviqasiyaya keçin Axtarışa keçin

Faylın orijinalı ‎(2.408 × 2.374 piksel, fayl həcmi: 1,91 MB, MIME növü: image/jpeg)

Bu fayl "Vikimedia Commons"dadır
və digər layihələrdə istifadə edilə bilər.
təsvir səhifəsi
təsvir səhifəsi
 Faylın təsvir səhifəsinə get

Xülasə

İzah
English: Cloud chamber photograph of the first positron ever observed. The thick horizontal line is a lead plate. The positron entered the cloud chamber in the lower left, was slowed down by the lead plane, and curved to the upper left. The curvature of the path is caused by an applied magnetic field that acts perpendicular to the image plane. The higher energy of the entering positron resulted in lower curvature of its path.
Original caption: A 63 million volt positron (Hρ = 2.1×105 gauss-cm) passing through a 6 mm lead plate and emerging as a 23 million volt positron (Hρ = 7.5×104 gauss-cm). The length of this latter path is at least ten times greater than the possible length of a proton path of this curvature.
Tarix Photographed 2 avqust 1932. Published 15 mart 1933.
Mənbə Anderson, Carl D. (1933). "The Positive Electron". Physical Review 43 (6): 491–494. DOI:10.1103/PhysRev.43.491.
Müəllif Carl D. Anderson (1905–1991)
İcazə
(Faylın təkrar istifadəsi)		 Obtained from American Physical Society, March 5, 2008. The copyright for the periodical containing this picture, if renewed, would have had to be renewed in 1960 or 1961. I checked the Catalog of copyright entries for Periodicals in 1960 and 1961, http://onlinebooks.library.upenn.edu/cce/, but The Physical Review is not listed there. Therefore, the copyright on the entire issue of The Physical Review, including this picture, has expired.

Lisenziya

Public domain
This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.

العربية ∙ Deutsch ∙ English ∙ español ∙ français ∙ galego ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ português ∙ português do Brasil ∙ русский ∙ sicilianu ∙ slovenščina ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/−

Flag of the United States
Flag of the United States

Captions

Add a one-line explanation of what this file represents
The first cloud chamber photograph of a positron's path

Items portrayed in this file

təsvir edir

materiya

antimaddə

MIME type ingilis

image/jpeg

yaranma tarixi

2 avqust 1932

Faylın tarixçəsi

Faylın əvvəlki versiyasını görmək üçün gün/tarix bölməsindəki tarixlərə klikləyin.

Tarix/VaxtKiçik şəkilÖlçülərİstifadəçiŞərh
indiki19:12, 6 may 201319:12, 6 may 2013 tarixindəki versiyanın kiçildilmiş görüntüsü2.408 × 2.374 (1,91 MB)QuibikCombined with a moire- and halftone-free but blurrier version that was also provided in the article. Much more accurate now.
18:10, 6 may 201318:10, 6 may 2013 tarixindəki versiyanın kiçildilmiş görüntüsü2.500 × 2.500 (1,97 MB)QuibikRe-extracted the image from the source article in greater resolution, removed halftone & moiré and adjusted levels.
16:54, 3 may 200816:54, 3 may 2008 tarixindəki versiyanın kiçildilmiş görüntüsü848 × 755 (71 KB)HPaul{{Information |Description=Cloud chamber photograph of the first positron ever observed |Source=Physical Review, Vol.43, p. 491 |Date=March 15, 1933 |Author=Carl D. Anderson |Permission=obtained from American Physical Society, March 5, 2008 |other_version

Aşağıdakı səhifə bu faylı istifadə edir:

Faylın qlobal istifadəsi

Mənbə — "https://az.wikipedia.org/wiki/Fayl:PositronDiscovery.jpg"