1 Secondary emission: An electron, atom or molecule colliding with the surface of the cathode with enough energy can knock electrons out of the surface. 2  Photoelectric emission: Electrons can also be emitted from the electrodes of certain metals when light of frequency greater than the threshold frequency falls on it.
Best Answer: Do it yourself, often referred to by the acronym DIY, is a term used by various communities that focus on people (called do-it-yourselfers or DIYers) creating or repairing things for themselves without the aid of on-duty, work-stationed paid professionals.
the Priddy oggy will be dealt with on the English pasties page because it is a recent invention (1960's) that originated in Priddy, a village in Somerset, UK. tiddly is naval slang for 'proper', as used in the navy and dockyards, especially Devonport; so tiddly oggy can be translated as being a proper pasty, as in Proper Cornish Pasty.