When a metal is heated to very high temperatures, Cloze (1): JXUwMDNkJXUwMDA5JXUwMDA5JXUwMDA2JXUwMDE3JXUwMDA2JXUwMDFkJXUwMDAxJXUwMDFk may be emitted from its surface. This is because electrons gain enough energy to break loose from the force of attraction of the Cloze (2): JXUwMDM2JXUwMDFiJXUwMDE2JXUwMDBmJXUwMDA5JXUwMDBj . this process is referred to as Cloze (3): JXUwMDJjJXUwMDFjJXUwMDBkJXUwMDE3JXUwMDFmJXUwMDA0JXUwMDA2JXUwMDAxJXUwMDA3JXUw MDBhJXUwMDQzJXUwMDQ1JXUwMDA4JXUwMDA0JXUwMDFhJXUwMDAwJXUwMDFhJXUwMDA2JXUwMDAx . the electrons are rays produced by the cathode and are therefore referred to as Cloze (4): JXUwMDNiJXUwMDAyJXUwMDE1JXUwMDFjJXUwMDA3JXUwMDBiJXUwMDAxJXUwMDQ1JXUwMDUyJXUw MDEzJXUwMDE4JXUwMDBh . they are produced in a tube called the Cloze (5): JXUwMDNiJXUwMDAyJXUwMDE1JXUwMDFjJXUwMDA3JXUwMDBiJXUwMDAxJXUwMDQ1JXUwMDUyJXUw MDEzJXUwMDE4JXUwMDU5JXUwMDU0JXUwMDAxJXUwMDE3JXUwMDA3 . The rays are accelerated towards the fluorescent tube by the Cloze (6): JXUwMDM5JXUwMDBmJXUwMDAxJXUwMDBiJXUwMDAx .when the rays hit the screen, it Cloze (7): JXUwMDNmJXUwMDBiJXUwMDAzJXUwMDE4JXUwMDA0 .