Remove unwanted characters from your cells. 1  Expand the Remove unwanted characters section by clicking on the arrows next to the second tab on the Cell Cleaner pane in Excel.2  To remove characters select the range with the cells that contain values you want to delete. 3  Choose the option that suits your task. Expand the Remove unwanted characters section by clicking on the arrows next to the second tab on the Cell Cleaner pane in Excel. 2  To remove characters select the range with the cells that contain values you want to delete. 3  Choose the option that suits your task. 4  You can select one of these five options:
The Heisenberg uncertainty principle states that it's impossible to simultaneously know the position and the momentum of a particle. In other words, if you know exactly where a particle is, you won't know how fast it's going. If you know how fast it's going, you won't be able to tell where it is.
But not so in quantum theory. There is an inherent uncertainty in the amount of energy involved in quantum processes and in the time it takes for those processes to happen. Instead of position and momentum, Heisenberg's equation can also be expressed in terms of energy and time.