The Uncertainty Principle Documentary
Δημοσιεύτηκε στις 16 Οκτ 2016
Heisenberg's
Uncertainty Principle states that it is impossible to know both the
exact position and the exact velocity of an object at the same time.
However, the effect is tiny and so is only noticeable on a subatomic
scale.
Werner Heisenberg (1901-1976) was a German physicist who
helped to formulate quantum mechanics at the beginning of the 20th
century. He first presented the Heisenberg Uncertainty Principle in
February 1927 in a letter to Wolfgang Pauli, then published it later
that year.
Light can be considered as being made up of packets of
energy called photons. To measure the position and velocity of any
particle, you would first shine a light on it, then detect the
reflection. On a macroscopic scale, the effect of photons on an object
is insignificant. Unfortunately, on subatomic scales, the photons that
hit the subatomic particle will cause it to move significantly, so
although the position has been measured accurately, the velocity of the
particle will have been altered.
By learning the position, you
have rendered any information you previously had on the velocity
useless. In other words, the observer affects the observed.
Uncertainty Principle states that it is impossible to know both the
exact position and the exact velocity of an object at the same time.
However, the effect is tiny and so is only noticeable on a subatomic
scale.
Werner Heisenberg (1901-1976) was a German physicist who
helped to formulate quantum mechanics at the beginning of the 20th
century. He first presented the Heisenberg Uncertainty Principle in
February 1927 in a letter to Wolfgang Pauli, then published it later
that year.
Light can be considered as being made up of packets of
energy called photons. To measure the position and velocity of any
particle, you would first shine a light on it, then detect the
reflection. On a macroscopic scale, the effect of photons on an object
is insignificant. Unfortunately, on subatomic scales, the photons that
hit the subatomic particle will cause it to move significantly, so
although the position has been measured accurately, the velocity of the
particle will have been altered.
By learning the position, you
have rendered any information you previously had on the velocity
useless. In other words, the observer affects the observed.
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