4.12.2 - Measurements by Parallax Bar
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Practice Questions
Test your understanding with targeted questions
What is parallax?
💡 Hint: Think about how you see objects differently from various viewpoints.
What does a parallax bar measure?
💡 Hint: Consider how we calculate elevation based on seen images.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the parallax bar measure?
💡 Hint: Think about what the device is specifically designed to do.
True or False: Higher points have less parallax than lower points.
💡 Hint: Recall the relationship between height and observed displacement.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A stereo pair photograph shows a known control tower height of 200 meters. If the parallax readings indicate a difference of 5 mm for a new building, what is the estimated height of the building?
💡 Hint: Use the established relationships and examine similarities to find the new height.
You measure a parallax of 2 mm for a low hill. If the corresponding known elevation for the reference point is 80 meters, how would you calculate the approximate height of that hill?
💡 Hint: Think about how minor changes in parallax help us calculate differences in height.
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