Page 10 - GALIET PHYSICS BLOSSOMS IV+
P. 10

CLASSICAL BEHAVIOUR OF PARTICLES P1 à As in the Quantum State.
In this picture, we get more particles arriving at the center and top than at the bottom.
In a grander picture, we get more particles arriving at the center and fewer as they move away from it. P2 à As in the Quantum State.
In this picture, we get more particles arriving at the center and bottom than at the top.
In a grander picture, we get more particles arriving at the center-bottom and fewer as they move away from it. P3àUnlike the Quantum State.
In this picture, we get the sum of each slit! We see more particles arriving at the center and decreasing little by little as they move away from the centre.
ONLY ONE PARTICLE GOES THROUGH AT ANY ONE TIME
CLASSICAL
(One Definite State System)
QUANTUM (Simultaneous State System)
Particle shows:
No interferenceàit arrives in bits at definite places.
Key result: Particle behaves like a particle, not a wave. A particle is a particle.
Particle shows:
InterferenceàWith the aid of a light, we see that as each particle goes through, it goes through only one of the two slits as a particle (only one of the slits flashes!).
As each passes, we see more particles arriving at the center and fewer as they move away from the center.
If we dim the light, some particles go through undetected. Why?
Light is not continuous; it is made of photons (particles).
When we dim it, the photons decrease.
Most of the particles flashing in one slit or the other arrive at the center and fewer as they move away from the center.
However, the undetected particles behave like waves, and their wave nature interferes
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