Any metal contains positive ions & free electrons which can move around inside the metal but can not leave it due to the attractive forces of the surface which may be represented by a...
Quantum physics is the physics that allows us to study and explain scientific phenomena that might not be directly observed in our daily life especially when we deal with atomic and subatomic systems such...
The solar cells or the photovoltaic cells are the electrical devices that convert the energy of sunlight into the electricity by the photovoltaic effect which is the ability of matter to emit the electrons...
