Orth means “straight” and odont means “tooth.” Orthodontists are dental specialists who diagnose problems with teeth, jaws, and lower facial development and treat malpositioned and misaligned teeth and jaws. According to the U.S. Department of Labor, more than 10,000 orthodontists work in the United States. Orthodontist Career History Archeologists have found evidence that metal bands
The U.S. Armed Forces are composed of five separate military services: the army, navy, air force, marines, and coast guard. These branches organize, train, and equip the nation’s lands, sea, and air services to support the national and international policies of the government. Together, military workers from these branches are responsible for the safety and
Neurologists are physician specialists who diagnose and treat patients with diseases and disorders affecting such areas as the brain, spinal cord, peripheral nerves, muscles, and autonomic nervous system. Neurologist Career History The development of modern neurology began in the 18th and 19th centuries. Studies were performed on animals in order to understand how the human
Actuaries use statistical formulas and techniques to calculate the probability of events such as death, disability, sickness, unemployment, retirement, and property loss. Actuaries develop formulas to predict how much money an insurance company will pay in claims, which determines the overall cost of insuring a group, business, or individual. Increase in risk raises potential cost
Meteorologists, or atmospheric scientists, study weather conditions and forecast weather changes. By analyzing weather maps covering large geographic areas and related charts, like upper-air maps and soundings, they can predict the movement of fronts, precipitation, and pressure areas. They forecast such data as temperature, winds, precipitation, cloud cover, and flying conditions. To predict future weather
Molders form sand molds for use in the production of metal castings. This production method, known as sand casting, requires knowledge of the properties of metals and sand mixtures, pattern shapes, and pouring procedures. Implementing a two-part box called a flask, molders pack specially prepared sand mix around a pattern of the object that is
Models display a wide variety of products and services in print, such as magazines and newspapers; television; and live marketing. Industrial models are used in all advertising media to sell every kind of product or service imaginable. Fashion models display clothing and fashion accessories in fashion shows, apparel catalogs, and retail stores. A small segment
Millwrights install, assemble, and maintain heavy industrial machinery and other equipment. If necessary, they construct foundations for certain large assemblies. They may also dismantle, operate, or repair these machines. Approximately 59,000 millwrights are employed in the United States. Millwright Career History The history of the millwright dates back to the industrial revolution. While milling machines
Microbiologists are scientists who study living things that cannot be seen with the naked eye, such as bacteria, fungi, protozoans, and viruses, as well as human and animal cells. They examine the effects these microorganisms and infectious agents have on people, animals, plants, and the environment. They are interested in learning about microorganisms that cause
Musicians perform, compose, conduct, arrange, and teach music. Performing musicians may work alone or as part of a group, or ensemble. They may play before live audiences in clubs or auditoriums, or they may perform on television or radio, in motion pictures, or in a recording studio. Musicians usually play either classical, popular (including rock