1. a word or phrase supposed to have magic power; incantation. 2. a state or period of enchantment: living under a spell. 3. any dominating or irresistible influence; fascination: the spell of fine music.
IF a wave moving at a constant speed were to have it's wavelength doubled (Wavelength x 2), then the frequency of the wave would be half of what it originally was (Frequency / â¦ 2). 6 people found this useful. Al Cohen.
(The speed of the wave stays the same). When the pulses met in the middle, the amplitude increased. When the pulses met in the middle, the amplitude decreased. There become place that stand still and places that move back and forth. As the frequency increases, the length of the wave decreases.