Mark J. Hagmann

5 Questions 12 Answers 0 Followers

Questions related from Mark J. Hagmann

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 2,544 3 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...

03 March 2019 797 3 View

How does a granite block compare with negative-stiffness for STM vibration isolation?

We have used a Minus-K negative-stiffness vibration isolation platform with our in-house scanning tunneling microscope but others have used different techniques. We have also used a two-stage...

12 December 2018 3,985 0 View

Do you know a source for doped MoS2 or other doped semiconductors that can be used for STM in air?

I need to show the effects of different doping levels on STM images made in air. MoS2 is an example of a semiconductor that may be used for Scanning Tunneling Microscopy in air--you prepare it...

11 November 2018 3,835 3 View

I am using Excel with complex functions beyond what is generally done.

I have an application in which I am writing a scientific program in Excel in order to make it portable for others to use. I get a response "You entered too many arguments for this function". I...

01 January 1970 2,262 6 View