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.
You have it backwards. When a wave passes into a different medium, the speed changes, and the wavelength changes to give you that speed change, with the frequency remaining constant. Or the wave can pass into a region of different temperature, which again changes the speed, but again, it's the wavelength that changes, not the frequency. billrussell42 Â· 4 years ago.