angy said:Thanks a lot!
Sorry, I still have a doubt.
The fact that the electron is moving in x-direction means that the y-component of its velocity is zero, isn't it? Therefore, the uncertainty in velocity in y-direction is zero. The conclusion is that we can say anything about the position along y-axis.
Is it a correct way of thinking, or am I mistaking?
The Heisenberg uncertainty principle, also known as the uncertainty principle or the indeterminacy principle, is a fundamental principle in quantum mechanics that states that it is impossible to simultaneously know the exact position and momentum of a particle with absolute certainty.
The Heisenberg uncertainty principle was first proposed by German physicist Werner Heisenberg in 1927.
The Heisenberg uncertainty principle is important because it sets a limit on the precision with which certain physical properties of a particle can be known. It also plays a crucial role in understanding the behavior of particles at the quantum level.
The Heisenberg uncertainty principle is closely related to the wave-particle duality of light, which states that light exhibits both wave-like and particle-like properties. The principle suggests that the more accurately we know the position of a photon, the less accurately we can know its momentum, and vice versa.
While the Heisenberg uncertainty principle may seem to only apply to the quantum world, it does have some implications in everyday life. For example, it helps explain why we cannot precisely predict the location and speed of a moving car at the same time. It also plays a role in the development of technologies such as MRI machines, which use the principle to create detailed images of the human body.