Non-fiction novels can have both more or less words but most publishable novels for the adult market, again, should be at least 60,000 words. Young adult and children's market novels are considerably shorter. They run on average from 45,000 to 75,000 words.
a small downward deflection in the arterial pulse or pressure contour immediately following the closure of the semilunar valves, sometimes used as a marker for the end of systole or the ejection period. Called also dicrotic notch.
A wave can be transverse or longitudinal. Transverse waves occur when a disturbance creates oscillations that are perpendicular to the propagation of energy transfer. Longitudinal waves occur when the oscillations are parallel to the direction of energy propagation.