Features of ball lightning stability

Torchigin, V.P.; Torchigin, A.V.

doi:10.1140/epjd/e2004-00198-7

Cited by 22 publications

(9 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is an adiabatic invariant /ω = const [17][18][19][20], where is the total light energy stored in the volume of the resonator confined by fragments of reflectors of unit area. The simplest explanation is based on the fact that the same invariant takes place for each photon.…”

Section: Forces Applied To Reflectors Of a Plane Optical Resonatormentioning

confidence: 99%

“…As is well known, the eigenfrequency of the resonator ω is in inverse proportion with n and product ωn is an adiabatic invariant. On the other hand, the energy stored in a conservative closed oscillating system is proportional to the frequency of oscillations with slowly changing parameters of the system [17][18][19][20]. In this case, product n is also an adiabatic invariant dn/n + d / = 0, where is the light energy stored in the resonator.…”

Section: Optical Electrostriction Pressure In An Optical Medium Inser...mentioning

confidence: 99%

“…There is once more a safe approach to the solution of this problem. Following the work of Rakich et al and Povinelli et al [17][18][19][20], the optical forces applied to an optical medium are calculated using a completely independent method: by means of the analysis of a change in the energy of an optical system. For this purpose, an optical medium is placed in the simplest one-dimensional structure, in the form of a plane optical resonator and the changes in the eigenfrequency of the resonator, at various positions of the optical medium, are calculated.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Interrelation between striction forces in dielectrics and optically induced forces in transparent media

Torchigin¹,

Torchigin²

2012

Phys. Scr.

View full text Add to dashboard Cite

Optically induced forces applied to a transparent optical medium, which is inserted in a closed plane optical resonator, are calculated by means of an analysis of the changes in the eigenfrequency and energy stored in the resonator at various positions of the medium. These forces are compared with striction forces applied to the medium considered as a dielectric placed in an alternate electrical field within the resonator. It is shown that the optically induced forces are equal to the striction forces. The results of using the classical formula for striction forces in electrostatics are considered.

show abstract

Section: Forces Applied To Reflectors Of a Plane Optical Resonatormentioning

confidence: 99%

Section: Optical Electrostriction Pressure In An Optical Medium Inser...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interrelation between striction forces in dielectrics and optically induced forces in transparent media

Torchigin¹,

Torchigin²

2012

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…where E is the light electric field strength and U E is the energy density of such a field. The refraction index n, related to the vacuum permittivity ε 0 as k ≡ ε/ε 0 = n 2 , can increase with gas density ρ because of a lineal dependence of this magnitude with ε 0 − ε. Torchigin and Torchigin [50] reviewed the model and explored several scenarios that could sustain a great variation of the refraction index. They found that some of the reported properties of BL could be explained under the assumptions made in a first formulation of the model.…”

Section: An Optical Modelmentioning

confidence: 99%

The Riddle of Ball Lightning: A Review

Donoso

Trueba

Rañada

2006

The Scientific World JOURNAL

View full text Add to dashboard Cite

One of the most intriguing and enduring scientific challenges is to find an explanation for ball lightning, the shining fireballs that sometimes appear near lightning strokes. Although many theoretical ideas have been proposed and much experimental work has been performed, there is not yet an accepted explanation of their amazing properties. They are surprisingly stable, lasting up to 10 s, even minutes in some rare cases. By night, their appearance can be spectacular, but their brilliance is just similar to that of a home electric bulb. Most of the time, their motion is smooth and horizontal, but it can also be erratic and chaotic; they can penetrate indoors through window panes. We review here some of the most discussed approaches, including both theoretical models to find an explanation as well as experimental efforts to reproduce them in the laboratory. We distinguish between chemical and physical models, depending on whether their stability is mainly based on their chemical composition or on purely physical phenomena involving electromagnetic fields and plasmas.

show abstract

“…At the same time, an increase of BL is usually connected with a gas discharge where free ions and electrons occur. In this case BL containing free charges in the form of a double layer is also possible [7].…”

Section: Introductionmentioning

confidence: 99%