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.
Each wave like light, sound, electromagnetic have got certain range of propagation speed.It differs slightly according the medium through which it travels. Therefore the wave length multiplied by frequency decides the speed of travel. The frequency is nothing but the number of waves generated per second. Therefore to keep the speed constant if the frequencies increase automatically the wave length will be shorter and vice versa.