Adam Szewczyk

4 Questions 76 Answers 0 Followers

Questions related from Adam Szewczyk

How quasiclassical propagator is derived?

Some authors build their Green's function from Hamiltonian using quasiclassical propagator. Sometimes this propagator is referred as Gor'kov propagator or Eilenberger propagator. I could not...

12 December 2017 5,082 1 View

Has anyone found PCBs and fire retardant inside plants due to their nutrient absorption process?

Recently, I watched a documentary on scientists' work on orcas in New Zealand. It was about PCBs (polychorinated biphenyl) and fire retardant ending up in the entire food chain from plankton and...

03 March 2014 944 9 View

Has anyone run into off the shelf conductive paint with better properties than Bare Paint?

I am looking for a way to cover very light plastic with a conductive paint (off the shelf) that has similar properties of copper wire or equivalent. I found a paint called Bare Wire...

08 August 2013 4,751 7 View

Where would one find ultra sensitive polarized dc relays?

I read a section on relays in "Instrument Engineers' Handbook" by Roberts, Liptak and Durden. They mentioned about relays with coil sensitivity ex: of 20 micro watts. I could not find that kind...

06 June 2013 7,817 4 View