The environment could be lit with flares, lights could flicker. The lights flicker, distracting the hitman. The mysterious wavering light continues to flicker in the darkness. Their halo begins to flicker and dim. This can create a potentially noticeable 30 Hz flicker. Lights flicker and the elevator cable snaps. The tendency of electric arcs to flicker and hiss was a major problem. Suddenly, the lights flicker and go out, and a wind starts to blow. The lights flicker, then go out. This perception of modulated light as steady is known as the flicker fusion threshold. Their glamours start to fade and flicker. However, a faulty fluorescent lamp can flicker at a much lower rate and trigger seizures. After some time the light will flicker as if to go out. As the elevator doors close, the lights of the service elevator flicker out. Finally, all of the lights in the mansion completely flicker out.