Electron Diffraction Flashcards
1
Q
How do electrons behave in a partial vacuum?
A
Cathode heats up - electron gain energy - get excited - attract to the top and bottom of the anode - travel through the middle - a dot forms on the partial vacuum.
2
Q
How does graphite affect the electrons?
A
A piece of graphite causes the electrons to diffract - electrons act like a wave- must have a wavelength.
3
Q
What is wave-particle duality?
A
When matter acts like both a wave and a particle in different circumstances
4
Q
How does the Fluorescent screen work?
A
The electrons hit the screen, giving it energy - excites the atoms - when they de-excite they emit visible photons. When the voltage (electrons) is turned off, the glow stops.
