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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The product of the frequency and wavelength of the  i  th  hyperfine component of the 11-5, R(127) transition of  127 I 2  yields a value for the speed of visible red light. This value of  c , the most accurate ever measured for visible light, agrees with the value defined in the redefinition of the meter within the 3 σ  error limits of the krypton length standard.

The continuity of the meter - the redefinition of the meter and the speed of visible-light