10 citations · 29 across the 11 of their papers we have counts for
13 papers
Observation of poloidal magnetic flux emission from a low-pressure spark: validation of the hypothesis of constrained plasma dynamics?
A. B. Blagoev, V. Yordanov, S. K. H. Auluck
This paper revisits an earlier discussion of the hypothesis of constrained dynamics [IEEE Trans. Plasma Sci. 41, 2013 pp. 437-446] with better experiments and insights. This hypoth…
Revisiting Lamb Shift Theory through Brownian Motion of the Proton
Vasil Yordanov
This paper presents a novel theoretical derivation of the Lamb shift in the hydrogen atom, based solely on fundamental constants and the stochastic (Brownian) motion of the proton.…
Preserving Mass Shell Condition in the Stochastic Optimal Control Derivation of the Dirac Equation
Vasil Yordanov
Lagrangian for a single relativistic charged particle in an external electromagnetic field, retaining both the standard relativistic square-root kinetic term and the minimal electr…
Revisiting the Bohr Model of the Atom through Brownian Motion of the Electron
Vasil Yordanov
We revisit the Bohr model through Brownian motion of the electron and the principles of stochastic optimal control. The electron is assumed to have a definite but random position,…
Complex Stochastic Optimal Control Foundation of Quantum Mechanics
Vasil Yordanov
Recent studies have extended the use of the stochastic Hamilton-Jacobi-Bellman (HJB) equation to include complex variables for deriving quantum mechanical equations. However, these…
Measurement of the electron charge using Schottky noise. Problem of the 6-th Experimental Physics Olympiad. Sofia 8 December 2018
Todor M. Mishonov, Emil G. Petkov, Aleksander A. Stefanov +14
Several consecutive experiments are described with a printed circuit board PCB set-up, especially designed for these experiments. Doing the consecutive experimental tasks opens up…
Measuring the speed of light with electric and magnetic pendulum
Vasil G. Yordanov, Vassil N. Gourev, Stojan G. Manolev +2
This problem was given at the Fourth Open and International Experimental Physics Olympiad (EPO4) Day of Light on 23 April 2016 in Sofia organized by the Sofia Branch of the Union o…
An undergraduate laboratory experiment on measuring the velocity of light with a catastrophic machine
T. M. Mishonov, A. M. Varonov, D. D. Maskimovski +3
An experimental setup for electrostatic measurement of , separated magneto-static measurement of and determination of the velocity of light $c=1/\sqrt{\varepsi…
Volt-Ampere characteristic of "black box" with a negative resistance
Stojan G. Manolev, Vasil G. Yordanov, Nikolay N. Tomchev +1
This problem was given at Third Experimental Physics Olympiad "The day of the resistor", 31 October 2015, Kumanovo, organized by the Regional Society of Physicists of Strumica, Mac…
Measuring Plank constant with colour LEDs and compact disk
Vassil N. Gourev, Stojan G. Manolev, Vasil G. Yordanov +1
This problem was given on the Open Experimental Physics Olympiad (OEPO) "The day of the photon" on 25 April 2015. The Olympiad was a part of the celebration of the International Ye…
Charging of capacitors with double switch. The principle of operation of auto-zero and chopper-stabilized DC amplifiers
Todor M. Mishonov, Albert M. Varonov, Peter V. Peshev +3
The problem given to the 10 Experimental Physics Olympiad (EPO10) 7 December 2023, Skopje, 11:00-15:00. The Olympiad is organized by Society of Physicists Macedonia and the Sofia B…
Resonance measurement of periodically driven contact potential difference
Vasil G. Yordanov, Todor M. Mishonov
A new type of quartz resonance device for measurements of oscillations of the contact potential difference induced by modulated light is described. Special attention is devoted to…
Planck's constant measurement by Landauer quantization for students laboratories
Desislav S. Damyanov, Iliana N. Pavlova, Simona I. Ilieva +3
A simple experimental setup for measuring the Planck's constant, using Landauer quantization of the conductance between touching gold wires, is described. It consists of two gold w…