Doppler Effect 1
Connor Wagner, and Zack Dorigatti
Physics 1010
Salt Lake Community College
10/30/2012

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The subject that Zack wrote about was the application of basically Doppler radiography.
Next came Doppler Effect in the field of Medicine. The points he covered were Doppler
Echocardiography. Then were the different types of echocardiography that use the Doppler
Effect. Finally the benefits of using Doppler technology in medicine, was written about. Finally another and more common practical use of the Doppler Effect will be looked over; the existence of radar guns due to the Doppler Effect. This topic was covered by Connor.
The Doppler Effect is a natural occurrence, but has many practical applications and uses.
When an object moves away from another object, the speed of the object moving can be calculated by the frequency in the sound waves. When an object is coming near someone the sound waves become shorter and higher in frequency. This little bit of knowledge is fundamental, yet so useful to our modern world.
The Doppler Effect has multiple applications one of them is in medicine. There are multiple applications in the medical field as well. A few of them are basically Doppler radiography, Doppler Echocardiography, as well as the different types of echocardiography that use the Doppler Effect. You also have to take into account the benefits of using Doppler technology in medicine. Without these you cannot possibly begin to understand the importance of the application of the Doppler Effect because it shows us the possible uses outside of the trains of thought that focus on theory, the ones that happen in life. The aspects that will be shown

Doppler Effect 3 here will prove that with more advancement with the Doppler technology better healthcare can be provided.
Now saying the word radiography makes you think of radiology which is x-rays. Very similar the technical thing they do here is use ultrasonic waves to see different parts of the body.
This is just a real time x ray, minus the radiation. That’s the Doppler radiography. How it works is to measure the changes in the ultrasonic waves. This can be used in a number of different specific procedures and locations for patients.
The first subject to be brought up is Doppler Echocardiograph. This is actually a large part of what goes on in the medical field but it has multiple aspects. This is basically as way to see the heart. It bounces light waves off the heart and records them this allows the medical professionals to get an accurate reading of how our heart is doing.
There is a little more to it than that though. You have the different types of Doppler echocardiography they use. Color Doppler echocardiography, is the first method that research turned up. This method goes a long way towards allowing us to visualize the velocity of the blood. In addition, it tells us whether or not it’s flowing in the right direction. It does this by coloring the tissues and blood differently. Contrast echocardiography, detects tiny bubbles made by an injection, into the vascular system, of a liquid or a small amount of carbon dioxide gas.
Doppler echocardiography itself is just a technique for measuring and recording how the red blood cells flow through the cardiovascular system, using Doppler ultrasonography. This is accomplished by using either continuous or pulsed waves. M-mode echocardiography is another way of recording information about the heart. This method records the amplitude and rate of motion (M) live. This yields a monodimensional, (singular or “ice pick”) view of the heart.

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Last but certainly not least is transesophageal echocardiography (TEE). In this method the put a transducer that is attached to a fiber optic endoscope down the throat to the esophagus. This then gives a two-dimensional image of the heart because of the provided Doppler information.
Now the benefits of using Doppler technology in our medical procedures are really go into all aspects of procedural patient care. They are less invasive mainly just skin contact is necessary for most of them. With regards to using the transducer, in the TEE. That particular procedure can be on the uncomfortable side of things. Another benefit of this technology is that it allows for accurate results in the procedures. The last benefit that comes to mind is the fact that no major radiation is used with the ultrasonic Doppler tech itself so that makes it safer for the medical techs and the patients.
In conclusion the positive aspects of medical applications of the Doppler Effect are shown by, Doppler radiography, Doppler Echocardiography, as well as the different types of echocardiography that use the Doppler Effect, and the benefits of using Doppler technology in medicine. The positive aspects shown prove that with more advancement with the technology better healthcare can be provided.
Like all doppler applications, the same thing is happening. When a police officer is trying to find the speed of an approaching vehicle, he first aims his radar gun at the vehicle. When the officer pulls the trigger he sends out a burst of radio waves at a certain frequency. Within a spit second the sound waves have already bounced off the approaching vehicle and have come back toward the radar gun. Since the approaching vehicle is in motion, the returning sound waves will be at a higher frequency than when they originally left the radar gun. Meaning that the faster the

Doppler Effect 5 car is moving, the faster the frequency will be returning to the radar gun. The speed of the car is determined by the emitted frequency of the radar gun and the reflected frequency of the sound waves bouncing off the car.
Conclusion
The Doppler Effect itself is not an application of just itself, its a little piece of knowledge that comes from a natural occurrence between objects. By studying the Doppler Effect, one can learn many useful applications that use the natural occurrence as a way to read data and present an answer to something. Its obvious that the knowledge of the Doppler Effect has changed our world and aided how we see the modern world.
References
Doppler Echocardiography In Retrieved from http://medicaldictionary.thefreedictionary.com/Doppler echocardiography
Hewitt, P. G. (2012). Conceptual physics. (Vol. 11th).

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Kisslo, J. (11 d). Echo in context. Retrieved from http://www.echoincontext.com/doppler01/doppler01_01.asp
Zaykoski, L. (2008, Oct 30). Doppler ultrasound: Using the doppler effect for medical diagnosis.
Retrieved from http://www.brighthub.com/science/medical/articles/13268.aspx