Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

FAQ Obtener premium

Create a timeline

Public timelines

About & Feedback Acuerdo Privacidad FAQ

Cabinet Get premium

Donate

1 ene 1967 año - Seconds - A Second is formally defined not trough movements of celestial bodies but as 9,192,631,770 vibrations of the cesium atom.

Añadido al timeline:

Maths - History of time

ByCharlotte Best

21 nov 2019

0

0

455

fecha:

1 ene 1967 año

Ahora mismo

~ 58 years ago

About & Feedback Acuerdo Privacidad FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL