Using Reflection and Refraction (P3.10)
Brief summary of Using Reflectio and Refraction from the Edexcel GCSE Science Extension Units Student Book. It is under P3.10 in the book.
- Created by: Charlotte Hewitt
- Created on: 31-05-13 14:53
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- Using Reflection & Refraction
- Total internal reflection occurs in a medium when a ray approaches the interface at an angle greater than the critical angle.
- With an optical fibre, no matter how the fibre twists and turns the light ray is still repeatedly reflected back into the fibre.
- Optical fibres are used in endoscopes.
- Ultrasound
- Have frequencies higher than humans can hear.
- Travels through solid objects, but are partially reflected upon entering a different medium
- The waves travel through the body and are reflected at the interface between different tissues.
- The reflected waves are detected and converted to an image on a screen.
- Useful for both diagnosis and treatment.
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