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what is uncertainty principle which was given by werner heisenberg

what is uncertainty principle which was given by werner heisenberg

Grade:11

2 Answers

Aarti Gupta
askIITians Faculty 300 Points
9 years ago
Werner Heisenberg suggested that in case of small particles like electrons it is impossible to determine simultaneously both the position and velocity at a given instant with absolute certainty in the form of a well-known principle called Heisenberg’s uncertainty principle.This princilple is the consequence of dual nature of matter and radiation.It states that-
“It is impossible to measure simultaneously both the position and velocity(or momentum) of a microscopic particle with absolute accuracy or certainty.”
Mathematically it is given as-
Delta x * delta p is greater than and equal to h/4pi
or,
delta x * m delta v is greater than and equal to h/4pi
where,
delta x = uncertainty in position
delta p = uncertainty in momentum
h = Planck’s constant
m = mass of particle
delta v = uncertaintuy in velocity
Sunil Kumar FP
askIITians Faculty 183 Points
9 years ago
According to Heisenberg’s uncertanity principle it is impossible to determine simultaneousle the momentum and position with exact precision.
we have
uncertanity in position(delta x)*uncertanity in momentum(delta p)=h/4pi
where h is the planck’s constant
In simple words suppose we have a ball of mass 200 gm,then the uncertanity in velocity is 25m/s.Then the uncertanity in position will be very less.It simply means that we can locate the position of the ball very easily.As uncertanity in position and velocity are inversely related

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