Appendix:Polish surnames. Polish surnames are known from the Middle Ages, but only 200 years ago did the inherited surnames become compulsory. The most common Polish names Nowak, Nowakowski, Nowacki, and Nowicki are variants meaning new, Przybyszewski and Przybylski mean he who has arrived.
Beta Waves. Beta Waves, sometimes also called the beta rhythm, is the frequency of the electrical activity in the brain that falls between 12 and 30 Hz and is the state that is associated with normal waking consciousness. These brain waves are classified as low and high amplitudes.
Transverse wave - a wave that causes the medium to vibrate at right angles to the direction in which the wave travels. Longitudinal wave â a wave in which the vibration of the medium is parallel to the direction the wave travels. Surface wave - a wave that travels along a surface separating two media. Transverse waves.