Flashcards
Pysics 3
Flashcards do conjunto (10)
- 1What are X-rays?High frequency, short wavelength electromagentic waves.
- 2How does a X-ray work?They are passed through healthy tissue, but absorbed by denser material such as bone and metal.
And the photographic flim print the -ray - 3Why is the most part on the phtographic flim balck when taken an X-Ray?The white bits are where fewer X-Rays get through. This is a negative image where the plate started off as white.
- 4What is a CT scan?Its is a computerised axial tomography where it produces high resoultion images of soft and hard tissue.
- 5What is an UltraSound?A sound or other vibration at a very high frequency that is not abled to hear by humans.
- 6What is Ultrasund used for?Pre-natal Scanning of a Fetus.
- 7Is Ultra sound safe?Yes, because ultrasound is no-ionising
- 8What is happens if you take a high dose of an X-ray.X-ray are ionising and can cause cancer.
- 9What is Refraction?Refraction is when waves change directions as they enter different medium.
- 10What is this picture?Convex
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- FlashCards sobre Pysics 3, criado por Abi Abraham em 22-04-2015.
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- Abi Abraham
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