Change search
ReferencesLink to record
Permanent link

Direct link
Discovery of Cosmic Rays
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
2013 (English)In: Centenary Symposium 2012: Discovery Of Cosmic Rays / [ed] Ormes, JF, American Institute of Physics (AIP), 2013, 9-16 p.Conference paper (Refereed)
Abstract [en]

The mysterious invisible radiation that ionized air was studied a century ago by many scientists. Finally, on 7 August 1912, Victor Hess in his seventh balloon flight that year, reached an altitude of about 5000 m. With his electroscopes on board the hydrogen-filled balloon he observed that the ionization instead of decreasing with altitude increased significantly. Hess had discovered cosmic rays, a discovery that gave him the 1936 Nobel Prize in physics. When research resumed after World War I focus was on understanding the nature of the cosmic radiation. Particles or radiation? Positive or negative? Electrons, positrons or protons? Progress came using new instruments like the Geiger-Muller tube and around 1940 it was clear that cosmic rays were mostly protons.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2013. 9-16 p.
, AIP Conference Proceedings, ISSN 0094-243X ; 1516
Keyword [en]
Cosmic rays. Hess
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-121623DOI: 10.1063/1.4792532ISI: 000316575600002ScopusID: 2-s2.0-84874896827ISBN: 978-0-7354-1137-1OAI: diva2:619367
Centenary Symposium on Discovery of Cosmic Rays, JUN 26-28, 2012, Denver, CO

QC 20130503

Available from: 2013-05-03 Created: 2013-05-03 Last updated: 2013-05-03Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Carlson, Per
By organisation
Particle and Astroparticle Physics
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 16 hits
ReferencesLink to record
Permanent link

Direct link