Датотека:PositronDiscovery.jpg

Величина овог приказа: 608 × 599 пиксела. 5 других резолуција: 243 × 240 пиксела | 487 × 480 пиксела | 779 × 768 пиксела | 1.039 × 1.024 пиксела | 2.408 × 2.374 пиксела.

Оригинална датотека ‎(2.408 × 2.374 пиксела, величина датотеке: 1,91 MB, MIME тип: image/jpeg)

Ово је датотека са Викимедијине оставе. Информације са њене странице са описом приказане су испод.
Викимедијина остава је складиште слободно лиценциралних мултимедијалних датотека. И Ви можете да помогнете.

Опис измене

ОписPositronDiscovery.jpg	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 (H_ρ = 2.1×10⁵ gauss-cm) passing through a 6 mm lead plate and emerging as a 23 million volt positron (H_ρ = 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.
Датум	Photographed 2. август 1932.. Published 15. март 1933..
Извор	Anderson, Carl D. (1933). "The Positive Electron". Physical Review 43 (6): 491–494. DOI:10.1103/PhysRev.43.491.
Аутор	Carl D. Anderson (1905–1991)
Дозвола (Поновно коришћење ове датотеке)	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.

Лиценцирање

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

Историја датотеке

Кликните на датум/време да бисте видели тадашњу верзију датотеке.

	Датум/време	Димензије	Корисник	Коментар
тренутна	21:12, 6. мај 2013.	2.408 × 2.374 (1,91 MB)	Quibik	Combined with a moire- and halftone-free but blurrier version that was also provided in the article. Much more accurate now.
	20:10, 6. мај 2013.	2.500 × 2.500 (1,97 MB)	Quibik	Re-extracted the image from the source article in greater resolution, removed halftone & moiré and adjusted levels.
	18:54, 3. мај 2008.	848 × 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