The Most Significant Advancement in the Early Days of Radiography

question 33

Multiple Choice

The most significant advancement in the early days of radiography came in 1913 when W. D. Coolidge:

• A) became the first to alert the profession of the dangers of radiation exposure and advocated for the science of radiation protection.
• B) exposed a prototype of a dental radiograph, setting the stage for preventive oral health care.
• C) developed a variable, high kilovoltage x-ray machine compatible with the paralleling technique.
• D) introduced an x-ray tube that allowed for an x-ray output that could be predetermined and accurately controlled.

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Definitions:

Pure Monopolist

A market structure characterized by a single seller selling a unique product in the market, without any close substitutes and with high barriers to entry for potential competitors.

Average Total Cost

Is calculated by dividing the total cost of production by the total quantity produced.

Economic Profit

The remaining amount after all explicit and implicit costs are deducted from the entire revenue.

Technological Breakthrough

A significant innovation or discovery that dramatically advances technology or improves processes and products.