The line spectrum consists of lines of varying brightness and color, separated by dark stripes. The striped spectrum consists of stripes separated by dark gaps. The continuous spectrum is a solid multi-colored line. Heated bodies, liquids and gases emit a continuous spectrum at very high pressures. Line spectra are emitted by atoms of a gaseous substance in an atomic state.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.