In the Bohr model of a pie-mesic atom, a pie meson of mass m pie and of the same charge as the electron is in a circular orbit of radius r about the nucleus with an orbital angular momentum h/2pie. a pie meson of mass m pie and of the same charge as the electron is in a circular orbit of radius r about the nucleus with an orbital angular momentum h/2pie. In the Bohr model of a pie-mesic atom October 16, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related