Hi guys,
Question here about Thermionic Emission...
As far as I understand, when a metal is heated above a certain temperature ( does this temp have a name ? ) electrons are released from the metal to the surrounding VACCUM... however, this does not occur in air ... why is the case ? I imagine that the heat gives the electrons enough energy to break the atomic attraction to the nucleus of the atom, but how does the surround medium play a role?
Thanks guys
Question here about Thermionic Emission...
As far as I understand, when a metal is heated above a certain temperature ( does this temp have a name ? ) electrons are released from the metal to the surrounding VACCUM... however, this does not occur in air ... why is the case ? I imagine that the heat gives the electrons enough energy to break the atomic attraction to the nucleus of the atom, but how does the surround medium play a role?
Thanks guys