Examlex
The speed of light in an optical fiber is 1.83 * 108 m/s What is the index of refraction of the optical fiber?
Placebo
A substance with no therapeutic effect, used as a control in testing new drugs.
Drug-Treatment Study
A research study designed to evaluate the safety and effectiveness of medications or drug treatments in preventing, diagnosing, or treating diseases or conditions.
Actual Drug
A pharmaceutical substance with specific chemical properties that produce biological effects in the body.
Regularly Lit Room
A room that receives consistent lighting without significant changes in brightness over time.
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