Resonance Bowl (Chinese Spouting Bowl) 15in diameter with a Teacher Guide.Due to the vibrations caused by the rubbing of the handles, the water surface begins to ripple around the rim.Soon water drops shoot up quickly becoming continuous streams called standing wave.
Bragg reflection:diffraction of X-rays at a monocrystal Investigating the energy spectrum of an X-ray tube as a function of the high voltage and the emission current Duane-Hunt relation and determination of Planck's constant Moseley's law and determining Rydberg constant