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.
View All. Symptoms of emphysema are insidious in nature and may not, at first, be easy to recognize. Emphysema is among a group of lung diseases known as COPD, in which the alveoli of the lungs become damaged, causing them to enlarge and burst. Because the alveoli are where oxygen and carbon dioxide are exchanged, damage to this area makes it difficult for people with emphysema to expel all their air. This causes a build-up of carbon dioxide in the body.