What Prevented Ole Rømer from Calculating an Accurate Value for the Speed

question 199

Multiple Choice

What prevented Ole Rømer from calculating an accurate value for the speed of light from his measurements of the delays in eclipse times of Jupiter's moons?

• A) The dimensions of the solar system, particularly the length of 1 AU, were known only very inaccurately.
• B) Telescopes were not good enough at that time to show Jupiter's moons clearly, and accurate timings were not therefore possible.
• C) The distance between Earth's orbit and Jupiter's orbit was unknown.
• D) The clocks available at that time were not sufficiently accurate.

---

Definitions:

Formal Treatment

Structured medical or therapeutic intervention designed to treat a specific condition or disorder.

Counterconditioning

A behavioral therapy technique involving the conditioning of an unwanted behavior or response to a stimulus into a desired behavior by association with a positive or negative stimulus.

Joseph Wolpe

A South African psychiatrist known for developing systematic desensitization, a method used to reduce phobias and anxieties.

Anxiety Responses

Physical and psychological reactions that occur in response to perceived threats or stressful situations, including feelings of fear, apprehension, and increased physiological arousal.