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

The mass-energy formula E=mc^2 is thought to be derived by Einstein fromspecial relativity. The present study shows that since the formula has alsobeen derived from classical physics by Einstein, it is not an exclusivelyrelativistic result. The formula is implied by the classical electromagneticmomentum P=E/c and the Newtonian definition of momentum P=mv. Like momentumP=mv, E=mc^2 applies to both classical physics and special relativity, ifrelativistic mass is used in the equation. The derivation by Einstein in 1905is logically flawed as a relativistic proof and the truly relativistic formulashould be E=(E0)/(1-v^2/c^2)^(1/2) derived by Laue in 1911 and Klein in 1918.If the energy measured in one reference frame is E0, it isE=(E0)/(1-v^2/c^2)^(1/2) in a reference frame moving at velocity v relative tothe first frame.

Is E=mc^2 an exclusively relativistic result?