F-Stops

Stop - represents the relative change in the brightness of a light

How many stops brighter is a room if you start with one lightbulb and then add another?

    It would be one stop brighter, but you would need to double the number of light bulbs each time for another full stop.

Using the "Standard full-stop f-number scale" what aperture settings represent a full stop worth of light? Please list all of the settings that represent a "full stop" of light.

     Each aperture value in instances of 2 have a "Full Stop" of light.

AV 1 : 1 f/No

AV 2 : 2 f/No

AV 4 : 4 f/No

AV 6 : 8 f/No

AV 8 : 16 f/No

AV 10 : 32 f/No

AV 12 : 64 f/No

AV 14 : 128 f/No

AV 16 : 256 f/No