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Chart of the Nuclides
An interactive chart of all known nuclides (nuclear isotopes), with data on specific nuclides.
High-energy physics literature database. INSPIRE combines the SPIRES database content with the Invenio digital library technology developed at CERN.
International Centre for Theoretic Physics
The Abdus Salam International Centre for Theoretical Physics has been a driving force behind global efforts to advance scientific expertise in the developing world.
Physics and Astronomy Classification Scheme (PACS)
If you are a researcher preparing a manuscript for submission to a journal that requires the author to suggest applicable PACS codes, you may use the provided link to an alphabetical index of the codes included in the latest edition of PACS.
Evaluating Internet Sources
Anyone can publish content on the internet. The questions below will assist you in evaluating web pages for use as academic sources. Evaluate the following criteria before making a decision regarding the quality of a source :
- How accurate is the information presented? Are sources of factual information or statistics cited? Is there a bibliography included?
- Compare the page to related sources, electronic or print, for assistance in determining accuracy.
- Is the author's name visible? Does the author have an affiliation with an organization or institution?
- Does the author list his or her credentials? Are they relevant to the information presented?
- Is there a mailing address or telephone number included, as well as an e-mail address?
- Is the site objective? Is there a reason the site is presenting a particular point of view on a topic?
- Does the page exhibit a particular point of view or bias?
- Does the page contain advertising? This may impact the content of the information included.Look carefully to see if there is a relationship between the advertising and the content, or whether the advertising is simply providing financial support for the page.
- Was it recommended by a faculty member or another reliable source?
- Was it cited in a scholarly or credible source?
- Was it a link from a reputable site?
- Is the information provided current?
- When was the page created?
- Are dates included for the last update or modification of the page?
- Are the links current and functional?
the first American physicist; characterized two kinds of electric charge, which he named ``positive'' and ``negative''
discovered that pressure applied to an enclosed fluid is transmitted undiminished to every part of the fluid and to the walls of its container (Pascal's principle)
Charles Augustin de Coulomb
experiments on elasticity, electricity, and magnetism; established experimentally nature of the force between two charges
proposed a simple geometrical wave theory of light, now known as ``Huygen's principle''; pioneered use of the pendulum in clocks
developed the fundamental relationship of fluid flow now known as Bernoulli's principle
performed fundamental observations, experiments, and mathematical analyses in astronomy and physics; discovered mountains and craters on the moon, the phases of Venus, and the four largest satellites of Jupiter: Io, Europa, Callisto, and Ganymede
discovered Hooke's law of elasticity
Sir Isaac Newton
developed theories of gravitation and mechanics, and invented differential calculus
discovered law of refraction (Snell's law)
hypothesized that the Earth is a giant magnet
Physics Research Laboratories