English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this pedagogical note it is demonstrated how the numeric value of finestructure constant may be established by comparing results following from thecalculations in the framework of Quantum Electrodynamics with the experimentaldata. As an observable, the coefficient of 1/r in the Coulomb law is used.

How the relation e^2/4pi = 1/137 may be obtained in the framework of Quantum Electrodynamics