A answered. Atrial fibrillation can be caused by a number of different things that predispose the heart to arrhythmias. Most commonly, longstanding high blood pressure is the cause. Other causes include heart disease such as blockage in the coronary vessels or diseases such as pneumonia or COPD.
Definition: When an artist deliberately restricts the number of colors they use in a painting, they're said to be using a limited palette. (A palette being what paints are squeezed out onto, ready for use.). Also Known As: Restricted palette.
:). Youâll also notice that colors in a limited palette can still be warmer or cooler in relation to other colors. Since the eye adjusts to what it looks at, it doesnât feel as though any colors are missing. There are cool and warm reds, cool and warm yellows and so on. I personally enjoy using a limited color palette at times, even though I do love all those beautiful colors available in the store, online or in catalogues.