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58 241 results (1,709s)

Result

What is the speed of light in material medium?

In high school textbooks, the velocity of light in the material medium is identified exclusively with the phase velocity. In fact, it is only one possible form of the speed. University students besides phase ve...

Education, special (to gifted persons, those with learning disabilities)

  • 2018
  • D
  • Link
Result

Phase Velocity of Wave Spreading in Pipe with Plastic Lubricant MOGUL EKO L1

Paper deals with establishing of phase velocity of spreading wave in steel pipe with plastic lubricant MOGUL EKO L1 for a pulsing flow. Phase velocity is established by experiment on the build loop. It is compared ...

BK - Mechanika tekutin

  • 2004
  • D
Result

Topology of the velocity field of active regions during their different evolutionary phases

We investigate the changes of the Doppler velocity field during different phases of its evolution.

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2005
  • D
Result

Polarization, phase velocity, and NMO velocity of qP-waves in arbitraty weakly anisotropic media.

Original scientific paper dealing with Polarization, phase velocity, and NMO velocity of qP-waves in arbitraty weakly anisotropic media....

DC - Seismologie, vulkanologie a struktura Země

  • 1998
  • Jx
Result

Surface wave phase velocities between Bulgaria and the Czech Republic

Surface phase velocities are measured along several profiles between Bulgaria and the Czech Republic using a modified two-station method. Love and Rayleigh waves are processed by the Fourier transform-based modified multiple filteri...

DC - Seismologie, vulkanologie a struktura Země

  • 2011
  • Jx
  • Link
Result

Effect of Roughness on the Phase Velocity of Rayleigh Waves in GaAs Crystals.

The phase velocity dispersion of the Rayleigh waves on surfaces of GaAs crystal having different roughness has been measured by laser-acoustic equipment. Applied model of a rough film explained the effect of surface roughness on the...

BM - Fyzika pevných látek a magnetismus

  • 2005
  • Jx
Result

Dependence of Frequency and Phase Velocity of Plasma Jet Hydrodynamic Instability on Sound Velocity

and the phase velocity flow oscillations as well as the velocity of plasma.and sound velocity were determined for various argon flow rate and various arc currents. It was found that the frequency and the phase...

BL - Fyzika plasmatu a výboje v plynech

  • 2004
  • Jx
Result

Experimental Investigation of Phase Velocity of Spreading Wawe in the Circular Pipe with Viscid Plastic Lubricant

Phase velocity is experimentally established for pulsing flow of viscid plastic environment friendly lubricant MOGUL EKO L1 in steel pipe with internal diameter dp=6,7 mm. Source of pulsing flow is lubricating device Tribos ACF 02. ...

BK - Mechanika tekutin

  • 2004
  • D
Result

VELOCITY PROFILES IN RECTANGULAR PRESSURIZED PIPE USING ULTRASONIC DOPPLER VELOCIMETRY

The paper deals with Ultrasonic Velocity Profiling method for estimation of velocity distribution in both one-phase and two-phase flows in pressurized pipe of rectangular cross section. It introduces basic findings...

BK - Mechanika tekutin

  • 2011
  • D
Result

Effect of roughness on the phase velocity of Rayleigh waves in GaAs

The phase velocity dispersion of the Rayleigh waves on surfaces of GaAs crystals having different roughness has been measured by laser-acoustic wave equipment. Applied model of rough film with zero elastic moduli explained the effec...

BM - Fyzika pevných látek a magnetismus

  • 2005
  • Jx
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