Ille tartit jir tišijrit n alwaq d iddikud?
Wavelength eqqal a izlayan s iddikud n iddikud Wavelength eqqal ujij jir crests n waves as ijja awen Frequency eqqal iddikud n waves i taj in daɣ azzaman Ijjit n iddikud, ifnaz n wavelength d almaɣna iyyan