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 wavelength is changing with the changing of the temperature, because the speed of sound changes with the temperature. The air pressure and the acoustic pressure p is irrelevant, when talking about the wavelength. When the temperature changes, the length of the vibrating air column of a flute or an organ pipe remains constant. Thus, when the speed of sound c changes than also the frequency f (the pitch) changes.