{"version":"1.0","type":"link","title":"Cathode ray - Newikis","description":"A cathode ray is a stream of electrons that are seen in vacuum tubes. It is called a \"cathode ray\" because the electrons are being emitted from the negative charged element in the vacuum tube called the cathode. A cathode ray tube aims the ray at a point on its screen. They were first observed in…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}