A) The source provides energy, it\'s normally a laser. B) The prism directs the source or the directions of the laser C) The exit slit is where the laser exits after it goes through the sample. Guided into the detector. D) The sample container holds the sample in place. It\'s normally a glass cuvette. E) The detector detects the photons that where excited by the laser. Solution A) The source provides energy, it\'s normally a laser. B) The prism directs the source or the directions of the laser C) The exit slit is where the laser exits after it goes through the sample. Guided into the detector. D) The sample container holds the sample in place. It\'s normally a glass cuvette. E) The detector detects the photons that where excited by the laser..