wavelength waveÂ·length (wÄv'lÄngkth', -lÄngth') n. Symbol Î» The distance between one peak or crest of a wave of light, heat, or other energy and the next corresponding peak or crest.
Causes: Emphysema: The number one cause of emphysema is smoking. Other contributing factors in its development or exacerbation (increase in severity) include long-term exposure to other lung irritants, such as air pollution, chemical fumes, or dust.
Emphysema is a chronic disorder caused by the gradual destruction of the alveoli, or the air sacs in the lungs, causing breathing difficulty and shortness of breath. It is referred to as Chronic Obstructive Pulmonary Disease (COPD), along with chronic bronchitis [ 1 ].mphysema is a chronic disorder caused by the gradual destruction of the alveoli, or the air sacs in the lungs, causing breathing difficulty and shortness of breath. It is referred to as Chronic Obstructive Pulmonary Disease (COPD), along with chronic bronchitis [ 1 ].