Why lights shimmer

Try gently wiggling the switch to see if this causes a flicker. If your light is already flickering, try toggling the switch on and off and see if this fixes the problem. If it does, the switch is the culprit and should be replaced. Have you noticed that the lights start flickering, blinking or dimming when a major electrical appliance like your air conditioner or washing machine comes on? Your problem may be an overloaded circuit—meaning that these appliances are pulling more electrical current than the circuit can handle.

Slight fluctuations are normal, but your home should always register between and volts. An electrician can find the best solution to resolve your voltage problem.

Your home likely shares a transformer with surrounding homes, so their loads impact your electrical supply. Report it for repair. Readable Font. Choose color black white green blue red orange yellow navi. Underline links. Highlight Links. Clear cookies. Accessibility by WAH. Some level of simple troubleshooting and repairing might be effective. For example if a dimmer switch is suspected, try replacing an LED bulb with a traditional incandescent bulb to see if that solves the problem.

If you issue falls under the bigger electrical issue category then you may need a professional electrician to inspect it further. Even if the flickering seems harmless, it could be a sign of a more serious underlying issue with your electrical wiring that could present a dangerous fire hazard to your home. Wind movements that are carrying schlieren flowing across an observer's line of sight causes the light fluctuations that are characteristic of the scintillation phenomena. Studies also show that relative humidity affects the intensity of terrestrial scintillation.

As humidity increases, so does the effect of terrestrial scintillation.