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A mechanical device that is used to record changes in the diameter of a pupil in a subject is called a(n)____________________.
Existing Products
Goods or services that are currently available on the market, distinguished from newly developed or conceptual offerings.
Long Period
An extended duration of time, which can span years or even decades, often used in the context of investments or planning.
Isolated Inventor
An individual who develops new ideas or inventions independently, often without the support of an organization.
Inventions
Original devices, methods, or processes developed from the creative mind that have never been made before, offering new solutions.
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