X-ray video of a female American alligator while breathing. Breathing is the process that moves air in and out of the lungs, to allow the diffusion of oxygen and carbon dioxide to and from the external environment into and out of the blood. Breathing sometimes also refers to the equivalent process using other respiratory organs such as gills in fish and spiracles in certain arthropods.
What is Plein-Air Painting? En plein air is a French term that translates literally as âin the open air.â The term âplein-air painting,â as it is currently used, usually refers to paintings that are completed on location. Over the past 20 years, interest in plein-air painting has exploded in the West.
Holbein Artist Oil is smooth, highly pigmented and the color range incorporates both traditional colors and modern pigments. All colors are ground up to 10 times in order to achieve a uniform viscosity across the entire palette of 167 colors.