Convert **radian/hour** to **petahertz**

Selected category: frequency and angular frequency.

Radian per hour (rad/hr) is a unit of angular frequency equal to 1/(2 x π x 3600) Hz, or 1/(2 x π x 3600) rps. Angular frequency, or angular speed is the magnitude of the vector quantity angular velocity.

Petahertz (PHz) is a unit of frequency equal to 10^{15} Hz. For example 2.47 PHz is the frequency of Lyman-alpha line, a spectral line of hydrogen, which is emitted when the electron falls from the n = 2 orbital to the n = 1 orbital.

Swap, do a petahertz to radian/hour conversion.