What is a Jewish baby naming ceremony? This is a brief ceremony during which the baby is given his or her Hebrew name. The chosen Hebrew name could be a name that sounds like the baby's secular/English name, or one that begins with the same sound as the baby's secular/English name.
For  radio waves and light waves  â scroll down â. Conversion: frequency f to wavelength Î» and wavelength to frequency. The speed of propagation c can be the speed of sound *or* the speed of light and radio waves. Sound waves are waves which propagate vibrations of air molecules.
Sound waves are mechanical longitudinal waves. âMechanicalâ means that sound waves must have a medium to pass through. The sound is really composed of the back-and-forth motion of molecules that make up the medium. These back-and-forth motions of molecules cause them to come towards each other, forming compressions.