Dear PF members,(adsbygoogle = window.adsbygoogle || []).push({});

I want to know some accurate informations regarding the time-energy uncertainty principle.

From several websites i got that [tex]\Delta[/tex]E[tex]\Delta[/tex]t[tex]\geq[/tex][tex]\hbar[/tex]/2 (for e.g., hyperphysics, wiki, etc.).

But in some books they use [tex]\Delta[/tex]E[tex]\Delta[/tex]t[tex]\geq[/tex][tex]\hbar[/tex].

Can anyone clear this why it is like that...Also is there any small derivation for that?

Thanks.

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Uncertainty rule

Loading...

Similar Threads - Uncertainty rule | Date |
---|---|

I Making sure about the spreads in the Uncertainty Principle | Mar 3, 2018 |

I Why is the Uncertainty principle inherent to particles? | Feb 21, 2018 |

B Uncertainty principle | Feb 16, 2018 |

B Where is the mistake -- violation of Heisenberg uncertainty | Jan 16, 2018 |

I Fermi's golden rule derivation | Jul 19, 2017 |

**Physics Forums - The Fusion of Science and Community**