Electrons are wird Video 2 Flashcards
Inherent angular momentum (2)
Not caused by them rotating about another object or spinning around or moving along a curved path.
They behave as if they are spinning
electrons have either (2)
Spin up or spin down
-Makes it behave as if its spinning either clockwise or anticlockwise
Angular momentum
For those of you familiar with angular momentum, it’s just like linear momentum (p = mv), except an object gains angular momentum when it moves along an angular path (e.g. orbiting around a planet, spinning like a top, etc.).
Spin ‘n” (2)
n will always be an integer (non fraction can be neg or 0) , a whole number or Half integer (diving integer by 2)
Maximum angular momentum our particle can be found with.
Describe the mysteriousness of spin (4)
Particles seem to have this angular momentum were showing no evidence of having any angular motion. The particle just seemed to inherently have this angular momentum as if they were spinning like a top on their axis
They were spinning with particular speeds, no faster and no slower.
This suggested that spin was quantized and can only take specific values.
Yet they can spin in opposite directions.
Spin matters when (2)
Fermion interacts with another
Magnetic and/or electric fields
Fermions with ex
particles with half-integer spin
electron, proton, or neutron
Because vector is either pointing up or down
it is either aligned or antialigned to the direction your measuring
Vector position in ms=+1/2+ terminology+greek
Spin up
vector points up
altha
Vector position in ms=-1/2 +greek+terminology
Spin down
vector pointing down
beta
Spin property is complete useless when you have an electron
on its own
Electron spin affects each electron when they are tot because
Their spin affects each other, they influence each other.
If an electron see another electron
hey will either align parallel or antiparallel.
Align parallel (2)
lowest energy (most stable)
Antialigned (2)
Higher energy
But still okay
Definition of Spin
An internal state of the particle that exist independently if its position and motion in space
Spin coherence
When electrons come close and influence each other, the info of one is locked in. You can take the electrons that were spin aligned and pull them apart metres away they will still align withe eachother.
Electrons are particles because (3)
They have mass
They have a fixed charge
They have physical size
Electrons are waves because
The pattern that emerges when electrons go through 2 slit screen is the same you get from light
