Mark J. Hagmann

4 Questions 7 Answers 0 Followers

Questions related from Mark J. Hagmann

What is the current and voltage profile for a short dipole antenna when the monopoles have different lengths?

The textbooks show a triangular pattern for the current as the limiting case for a short dipole, and how this may be considered to be the limiting case for the sinusoidal current distribution....

27 November 2020 5,447 5 View

Can you help me understand the model that is frequently used for a scanning tunneling microscope?

I have a question concerning the numerical models that are frequently used for a scanning tunneling microscope in which three solutions of the Schrodinger equation using the potentials for the...

28 March 2020 4,857 2 View

Is it possible that the derivative of the wavefunction may be discontinuous at a jump in the potential with the time-dependent Schrodinger equation?

It is well-known that the wavefunction and its first derivative must continuous at boundaries between regions having different values for the static potential, and reasons for this have been...

12 December 2019 9,937 4 View

Why would a small Excel file, typically 50 kB for a year grow quickly when it is saved?

For years I have used a small Excel file to keep records of expenses in rows and columns and it is typically no larger than 50 kB at the end of the year. This year, with no changes in hardware or...

16 March 2019 9,139 3 View