variable stars
punctuated equilibrium
Punctuated equilibrium.
That they are both theories of evolutionary change, but the tempo of the change is different enough that we have the two theories. Rapid evolutionary change punctuated with long periods of stasis describes the former while gradual and incremental change over long periods is the description of the later. Natural selection seems to be more important in gradualism than punctuation, but this is a murky area that is argued about often.
This concept is known as Punctuated Equilibrium. A theory developed by Steven J Gould and Niles Eldridge.
Changes over species over long periods of time is known as evolution.
settings/brightness
the moon can vary its brightness and the pink elephant called aphadophalis
Some laptops have a default setting which alters the brightness of the screen based on the lux of its immediate environment. This can usually be disabled in the BIOS. Sometimes the laptop has serval Power manager setting, the screen change brightness in the different setting, when useing battery, when using adapter , the brightness change.
Hello
Yes; It is possible to spot in between periods. IT can be caused by stress, extreme change in diet or weight change, hormonal imbalance etc. or can just be a result of being young and your periods not being regular yet.
Brightness settings should be in the Pop-it menu under "Global Settings."
yes
Increase the voltage supply.
In iOS, you must go into Settings>"Brightness and Wallpaper" and then toggle using the brightness slider. P.S. You can toggle this with Siri in iOS 7.
a dimmer
Stable Periods of little change interrupted by brief periods of more change is known as punctuated equilibrium.
A "dimmer" switch will change the brightness of lights.