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.
If you know the wavelength and frequency of a wave, all you have to do is plug them into the original formula and manipulate it to solve for the speed. Solve the following problem: Find the speed of a wave with a frequency of 8 Hz and a wavelength of 16 m. Here's how: 1  Wavelength (Î») = Wave speed (C)/Frequency (F).