Talk:John Ambrose Fleming
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John Ambrose Fleming (1849 - 1945) Professor of Electrical Engineering at University College London. Inventor of the Thermionic Valve. Is widely known for his direction rules for induced e.m.f's
There are two Fleming direction rules, one for each hand. Fleming’s Left Hand Rule is for Motor actions – not looked at here - and Fleming’s Right Hand Rule for generator actions, which is used to determine the direction of the induced e.m.f. in a conductor.
Fleming’s Right Hand Rule rule can be remembered using the memory aid below.
The capital letters in brackets for each finger give the clue to identify the property _________________________________________________________
(F)irst (F)inger: (F)ield
First finger - direction of Field
__________________________________________________________
Se(C)ond finger: (C)urrent
Second finger - direction of induced Current
__________________________________________________________
Thu(M)b: Direction of (M)ovement
Thumb - direction of Movement of conductor through field
__________________________________________________________
The Memory Aid above will help to recall the rule.
Does anyone know who hold's the image rights to Sir John Ambrose Fleming? Cant trace any remaning family members or trusts? Thanks, Shane
The image on the first external link (Summary of the life of Professor Sir John Ambrose Fleming) has this note at the bottom : '(Courtesy Marconi plc)', could this be used? Owen
[edit] Quotation from eulogy
The coding of the quotation from the eulogy is messed up. How long is the quotation - just the first para or all 3 paras? --ukexpat (talk) 14:28, 29 November 2007 (UTC)
[edit] Why doesn't lead paragraph mention is most notable achievements?
It seems to me what Fleming is known for today is the invention of the hot cathode diode vacuum tube, or kenotron, and this should be placed prominently in the lead paragraph. This is surely more important than that he was an amateur photographer and climber. His invention of the Right Hand Rule might also be noted there. --ChetvornoTALK 13:28, 30 April 2008 (UTC)
