Salaries. The U.S. Bureau of Labor Statistics provides salary data for both optometrists and physicians. According to its May 2011 figures, the average income for optometrists was $107,720 per year. That same figure, for physicians and surgeons, was $184,650.
In phonetics, a vowel is a sound in spoken language, with two competing definitions. In the more common phonetic definition, a vowel is a sound pronounced with an open vocal tract, so that the tongue does not touch the lips, teeth, or roof of the mouth, such as the English ah /ÉË/ or oh /oÊ/. There is no build-up of air pressure at any point above the glottis.
Strictly speaking, we can never see vowels, so that W sitting there on the page is not a vowel and neither is this A. We can only hear vowels. Vowels are sounds. Loosely speaking, the vowel letters A, E, I, O, and U are often called vowels. Y and W may or may not be included among the vowels, depending on the teaching method. The typical sound we make (in English) when we see the letter W is called either a semi-vowel, a semi-consonant, or a glide.