Taw qhia rau Tus qauv Zoo
Tus qauv zoo tsis tu ncua yog qhov tseem ceeb ntawm qhov tsis pom kev hauv lub cev, feem ntau yog qhia los ntawm Greek tsab ntawv α. Tus qauv zoo tsis tu ncua piv txog qhov sib piv ntawm qhov nrawm nrawm ntawm hluav taws xob txav ntawm thawj Bohr orbit thiab qhov ceev ntawm lub teeb nyob hauv lub tshuab nqus tsev. Tus qauv ntsuas yog α=e2 / (4πε0cħ) (qhov twg e yog lub luag haujlwm ntawm lub tshuab hluav taws xob, ε0 yog qhov dielectric tas li ntawm lub nqus tsev, thiab H yog kwv yees li Planck tas mus li, c yog qhov ceev ntawm lub teeb hauv lub nqus tsev).
Tus qauv zoo tsis tu ncua yog tus naj npawb nrog qhov loj me ntawm 1 (lossis tsis siv) 1/7137 (ntau kwv yees li 137.03599976)