Here is a start for digging on this
http://www.fractal-timewave.com/articles/four_number_sets.htm
This is what happens when you turn off a light switch.
Of course the lightning is proportional to the voltage so you would need to be in a pitch-black room
To even notice anything at 120V
For most people, the problem is how to find a place
Where there is a light switch turned on
In a room which is pitch black.
Some people, especially in the countryside
Will have a yard light that is 20 or 30 yards from the house, and the light switch in a front hall closet.
They can just turn off all the house lights, including LEDs and mobile devices,
Wait 15 minutes for eyes to adjust,
Probably sitting in a closet full of boots and coats too.
Anyway, it's an adventure.
Look directly at the switch you are about to turn off
Tap the switch plate a few times first to help others in your little closet group
To direct their eyes in the right direction
And switch off
There will be a little flash showing
Between the switch lever and the switch plate
Unless your switches are too modern and too perfect
In that case you will need to remove the switch plate,
And take countermeasures (electrical tape)
to prevent shock on exposed wires.
This only works if sheep are stupid enough to only elect people from elite schools
Only elect lawyers
And only elect people with LOTS OF EXPERIENCE
Like Maxine for instance
If people would wise up and not elect anyone
Who had already served a couple of times
Then this problem would not happen again
Now there's a question for POTUS…
Mr. President, are you paying for the QAnon billboards that are popping up around the country?