Recent content by npupp

Sure, no. I'll consider over a coffee.

If the electron is confined in a spherical region, the uncertainty in X is given by \Delta X = X_{2} - X_{1} So taking the centre of the sphere as 0, you will have 0.1nm and -0.1nm as X_{2} and X_{1} respectively, \DeltaX will then be 0.2nm Hope this helps ;) Mulling it over a...

The "beta of mercury" is the thermal expansion coefficient of mercury, which describes how much the liquid's volume changes with temperature. Remember: If you are stuck trying to figure out what a given coefficient/constant is for, have a look at the units, here you have units of inverse...

Remember that energy has been put into the system (the ball is moved upward by a hand), so just equating PE and KE will not work, an additional term describing the energy added to the system must be incorporated. As Betel said you know how much energy has been added to the system (from part...

I believe the university (UJF) here in Grenoble is a rather good place for Physics, close ties to the local CEA, CNRS, Neutron Source (ILL) and Synchrotron (ESRF) for the all important "stage* " required as part of the undergraduate physics course. While I do not know if it is the norm, the...

What are you trying to determine the uncertainty of? wavelength of incident radiation, unit cell parameters, atomic positions, occupancy of a site, U_{iso}?