The Electron (HSC SSCE Physics): Flashcards
📚Flashcards
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10 cards from this deck
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Practise the cards
10 cards from this deck
Cathode ray tube (CRT)
Cathode ray tube (CRT)
Evacuated glass tube with two metal electrodes at opposite ends
Cathode electrode
Cathode electrode
Electrode attached to the negative terminal
Anode electrode
Anode electrode
Electrode connected to the positive terminal
Two requirements for CRT operation
Two requirements for CRT operation
Low pressure (below kPa) and high DC voltage
Fluorescence
Fluorescence
Light emission when substance struck by energetic particles
Cathode ray deflection in electric field
Cathode ray deflection in electric field
Toward positive plate, away from negative plate
Evidence cathode rays have mass
Evidence cathode rays have mass
Paddle wheel rolls when struck (momentum transfer)
Why cathode rays identical regardless of cathode material
Why cathode rays identical regardless of cathode material
They are fundamental particles present in all types of atoms
Thomson's plum pudding model
Thomson's plum pudding model
Electrons embedded in uniformly distributed positive charge
Direction of cathode ray flow
Direction of cathode ray flow
From cathode (negative) to anode (positive)