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Astronomer's Toolbox
X-ray Telescopes: Quiz
X-ray Telescopes Quiz
Which property of the X-rays that impinge on matter at normal incidence makes medical films possible?
[A] The X-rays interact more efficiently with film than human tissue
[B] The X-rays are absorbed rather than reflected
[C] The X-rays fluoresce in the human body
X-rays impinging on certain materials at grazing incidence undergo:
[A] Total external reflection
[B] Total internal reflection
[C] Refraction
What German scientist developed three well-known optical configurations for imaging X-rays:
[A] Hans Bethe
[B] Hans Christian Andersen
[C] Hans Wolter
Five coaxial conic sections can form an X-ray image.
[A] True
[B] False
The first target of observation by an imaging X-ray system was:
[A] The Earth
[B] The Moon
[C] The Sun
An astronomer would like to be able to image cosmic X-ray sources because:
[A] Most sources are weak and the background is strong
[B] Imaging diffuse, or extended, structures affords them valuable information
[C] Both of the above
