an atom makes a transition from an excited state with a lifetime of 10^-9 s to the ground state and emits a photon with a wavelength 600 nm. What is the uncertainty in the energy of the excited state

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later