Difference between revisions of "Ultrasound"
(→Key Stage 4) |
(→Ultrasound Imaging) |
||
| Line 19: | Line 19: | ||
===Applications=== | ===Applications=== | ||
====[[Ultrasound Imaging]]==== | ====[[Ultrasound Imaging]]==== | ||
| − | : [[Ultrasound]] can be [[reflect]]ed | + | : [[Ultrasound]] can be [[reflect]]ed, [[refracted]] or [[Absorb (Physics)|absorbed]] at the [[interface]] between different [[media]]. This can be used, along with a computer, to create images of the internal structure of an [[object]]. This is particularly useful for [[opaque]] [[object]]. |
: [[Ultrasound]] is generally used to detect cracks in large [[metal]] structures. | : [[Ultrasound]] is generally used to detect cracks in large [[metal]] structures. | ||
: [[Ultrasound]] is used in [[hospital]]s to create images of [[organ]]s and of the [[foetus]] of [[pregnant]] [[women]]. | : [[Ultrasound]] is used in [[hospital]]s to create images of [[organ]]s and of the [[foetus]] of [[pregnant]] [[women]]. | ||
Revision as of 18:44, 19 February 2019
Contents
Key Stage 3
Meaning
Ultrasound is sound that has a frequency higher than 20,000Hz.
About Ultrasound
- Ultrasound is too high pitched for a human to hear.
Applications
- Cleaning - Ultrasound can be used to clean dirt from surfaces. The vibrations can create small bubbles in a water which work their way into cracks push the dirt out.
- Physiotherapy - The vibration from ultrasound can be used to massage parts of the body which can stimulate healing and repair.
Key Stage 4
Meaning
Ultrasound is sound that has a frequency higher than 20,000Hz.
About Ultrasound
- Ultrasound is any sound which is too high pitched to hear. Since the lowest frequency a human can hear 20,000Hz, then ultrasound is any sound above that.
Applications
Ultrasound Imaging
- Ultrasound can be reflected, refracted or absorbed at the interface between different media. This can be used, along with a computer, to create images of the internal structure of an object. This is particularly useful for opaque object.
- Ultrasound is generally used to detect cracks in large metal structures.
- Ultrasound is used in hospitals to create images of organs and of the foetus of pregnant women.