06-07-2012, 12:40 PM
OUR QUANTUM WORLD Wave Particle duality of Nature
[attachment=26961]
How big are atoms
Atomic size determined not till the 19th century
Atoms are very small ; about 0.5 nanometers.
Nanotechnology deals with atomic manipulations.
Material Objects:
Ball, Car, person, or point like objects called particles.
They can be located at a space point at a given time.
They can be at rest, moving or accelerating.
Waves and Particles Basic difference:
Waves can pass through each other !
As they pass through each other they can enhance or cancel
each other
Later they regain their original form !
OUR QUANTUM WORLD
1. Light waves exhibited particle like properties –
phenomena called photo-electric effect in which light impinging
on certain metals cause instanteous emission of electrons
in a billiard ball like impact.
– the basis of automatic door openers in grocery stores
2. Electrons (particles) exhibit wave like properties – they
can pass through each other ! Phenomenon of
electron interference – basis of electron microscopes
[attachment=26961]
How big are atoms
Atomic size determined not till the 19th century
Atoms are very small ; about 0.5 nanometers.
Nanotechnology deals with atomic manipulations.
Material Objects:
Ball, Car, person, or point like objects called particles.
They can be located at a space point at a given time.
They can be at rest, moving or accelerating.
Waves and Particles Basic difference:
Waves can pass through each other !
As they pass through each other they can enhance or cancel
each other
Later they regain their original form !
OUR QUANTUM WORLD
1. Light waves exhibited particle like properties –
phenomena called photo-electric effect in which light impinging
on certain metals cause instanteous emission of electrons
in a billiard ball like impact.
– the basis of automatic door openers in grocery stores
2. Electrons (particles) exhibit wave like properties – they
can pass through each other ! Phenomenon of
electron interference – basis of electron microscopes