Zobrazeno 1 - 10
of 51
pro vyhledávání: '"E. G. Petkov"'
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 69:694-698
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9c8ab17260d721c569d87136b0e724c
https://doi.org/10.1109/tcsii.2021.3111488
https://doi.org/10.1109/tcsii.2021.3111488
Autor:
Matteo Andreoni, E. G. Petkov, I. M. Dimitrova, Ss. Cyril, Riste Popeski-Dimovski, Albert M. Varonov, Todor M. Mishonov, Aleksander P. Petkov, Leonora Velkoska
Publikováno v:
Natural Science and Advanced Technology Education. 30:253-270
This is the problem of the 8th International Experimental Physics Olympiad (EPO8). The task of the EPO8 is to determine Planck constant ħh/2 using the given set-up with LED. If you have an idea how to do it, do it and send us the result;
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7893fded1d033d133fdc735c06b2b58c
https://doi.org/10.53656/nat2021-3.03
https://doi.org/10.53656/nat2021-3.03
Autor:
T M Mishonov, E G Petkov, N Zh Mihailova, A A Stefanov, I M Dimitrova, V N Gourev, N S Serfamov, V I Danchev, A M Varonov
Publikováno v:
European Journal of Physics. 43:029501
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59754065677e73e2230eaebe7e8464fd
https://doi.org/10.1088/1361-6404/ac42b7
https://doi.org/10.1088/1361-6404/ac42b7
Autor:
Vassil N. Gourev, Aleksander P. Petkov, V. I. Danchev, Iliyana Dimitrova, Todor M. Mishonov, N. Zh. Mihaylova, A. A. Stefanov, A. M. Varonov, E. G. Petkov
Publikováno v:
AIP Conference Proceedings.
A simple experiment for the electron charge qe measurement is described. The experimental set-up contains standard electronic equipment only and with 137$ budget can be built in every high-school lab all around the world. It is concluded that it is t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c12fe937bb6718451fb2ce43aa6ced2
https://doi.org/10.1063/1.5091405
https://doi.org/10.1063/1.5091405
Autor:
I. M. Dimitrova, E. G. Petkov, N. S. Serafimov, V. I. Danchev, A. A. Stefanov, Vassil N. Gourev, Albert M. Varonov, Todor M. Mishonov
The time dependent master equation from the seminal article by Ragazzini, Randall and Russell [J. R. Ragazzini, R. H. Randall and F. A. Russell, "Analysis of Problems in Dynamics by Electronic Circuits", Proc. of the I.R.E., Vol. 35, pp. 444--452, (1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7dd3eecc6f5eaa1a0cb456f063aa154
Autor:
A. M. Varonov, V. I. Danchev, I. M. Dimitrova, A. A. Stefanov, E. G. Petkov, Vassil N. Gourev, T. M. Mishonov
Publikováno v:
AIP Conference Proceedings.
A differential equation relating the voltage at the output of an operational amplifier U0 and the difference between the input voltages (U+ and U−) has been derived. The crossover frequency f0 is a parameter in this operational amplifier master equ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ea9795e7e144d4ba4cf4f4740e8a79e
https://doi.org/10.1063/1.5091329
https://doi.org/10.1063/1.5091329
Publikováno v:
AIP Conference Proceedings.
The well forgotten master equation from the seminal article by Ragazzini, Randall and Russell [J. R. Ragazzini, R. H. Randall and F. A. Russell, “Analysis of Problems in Dynamics by Electronic Circuits”, Proc. of the I.R.E., 35, pp. 11–19, (194
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c88d4184c526572fb7769667fa31fa3
https://doi.org/10.1063/1.5091330
https://doi.org/10.1063/1.5091330
Autor:
E. G. Petkov, A. M. Varonov, Vassil N. Gourev, A. A. Stefanov, I. M. Dimitrova, T. M. Mishonov
Publikováno v:
AIP Conference Proceedings.
A new experimental set-up for Boltzmann constant measurement is described. Statistically averaged square of voltage 〈U2〉 is measured for different capacitances C and the Boltzmann constant is determined by the equipartition theorem C 〈U2〉 = k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b79ebec0a3b90a24d275748fcd5b41f4
https://doi.org/10.1063/1.5091404
https://doi.org/10.1063/1.5091404
Autor:
I. M. Dimitrova, E. G. Petkov, A. M. Varonov, Riste Popeski-Dimovski, Leonora Velkoska, Alberto Barone, Todor M. Mishonov, Toshiro Mifune, Nikola S. Serafimov
Publikováno v:
Review of Scientific Instruments. 92:069904
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f8fa9b7f11cf89ad6dc7a13b76f3bd5
https://doi.org/10.1063/5.0058329
https://doi.org/10.1063/5.0058329
Autor:
Alberto Barone, Leonora Velkoska, I. M. Dimitrova, E. G. Petkov, Toshiro Mifune, A. M. Varonov, Todor M. Mishonov, Nikola S. Serafimov, Riste Popeski-Dimovski
Publikováno v:
Review of Scientific Instruments. 92:025123
For the need of measurements focused in condensed matter physics and especially Bernoulli effect in superconductors we have developed an active resonator with dual operational amplifiers. A tunable high-Q resonator is performed in the schematics of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc0be84597a6fd22a7fdbbe9ebed46f3
https://doi.org/10.1063/5.0041136
https://doi.org/10.1063/5.0041136