Science of Physics of Health

Health physics science or called medical physics is a science that combines two areas of study are very broad, namely: the physics and health sciences and its relevance. Health physics refers to two main areas of study:

1.first, the application of physics functions in the human body and its application to overcome the illness experienced by the body.

2.second, the application of physics to the medical examination techniques.

The first part is often called physics of physiology; while the second part involves an understanding of the basic concepts and workings of the medical instruments used to diagnose patients. Both fields of study are of great importance to maintain (the first part) of health and (the second part) to overcome or heal the body when it has a disease.

The field of health physics consists of several sub-divisions. In the United States health physics is more focused on the field of radiology studies. Physics is used to analyze perfectly the physical processes of radiation events and provide a complete solution on how to overcome the problems that may occur in the human body due to radiation treatment. The healing process of the human body from various diseases by way of radiation can thus be done well and perfectly.

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Mathematics as a tool

Although physicists can easily solve various physical problems, many other physical problems, including health, must be solved by involving a few mathematical formulations. With the help of skillful mathematical techniques, many medical problems are resolved. In the world of physics itself mathematics becomes a tool to solve various problems. Completing various equations of body motion, blood flow, heartbeat process, interaction process between body cells, done by using technical tool of relevant mathematical formulation. Thus, having a good mathematical understanding is helpful to solve various health problems perfectly.

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Measurement Magnitude

In everyday life, we often make measurements. In the world of measurement health becomes a routine task undertaken. Measuring body temperature, measuring height, measuring heart rate, measuring blood flow pulse are many examples we find. This measurement process will involve numbers on various digits.

All measuring instruments used in the measurement process must have the smallest measurement scale, the smallest scale shown in the measuring instrument. We realize that as human beings we have many limitations. In the process of measurement we do, because of that limitation, will produce a little error in the tolerance limit, which by physicists and mathematicians categorized as uncertainty.

measurement results. That is why it is often recommended that measures of magnitudes should be repeated many times and take the averages as the final result reported. All that is done in order to obtain more accurate results so that the measurement results really state the actual state. The smallest possible error for each measurement is half the size of the smallest scale of the measuring instrument used.

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Generally in our daily life the scale of the measurement results that we get is to involve only the magnitude or the value of the course. This quantity is called a scalar quantity. We rarely think about what attaches to that magnitude. If a process of measurement yields only a magnitude, then the measurement yields only a scalar measurement value. But in real life and the world of health, many magnitudes to be measured not only have great but also have direction. A quantity that has a magnitude and direction is called a vector quantity. For example, let's say you push a friend so strongly that the friend drops and slams onto the floor to hurt. You in the process of course "give" a certain force to encourage the friend. But in addition to the value of style that you "give" is certainly there is a direction where you push it. So the style that you "give" it has a large and direction, so that force is called a vector quantity. Many vector quantities that we will use in solving various health problems of the body.

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Unit of Physics Magnitude

The style you use to encourage friends has a great and direction. In addition, style also has units as other magnitudes. The force has a unit of Newton equal to kg.m / dt2. On another occasion you may find the unit of force to gr.cm/dt2. At first glance there is a difference between the two units although both units of the force. Why does the same amount have different units? Physical studies actually allow for the difference in writing. The difference that occurs in writing the above style unit only on the unit system used. Kg.m / dt2 is an international unit system (SI) or often called the MKS system derived from the word Kilogram Second Meter, while gr.cm/dt2 is a CGS system derived from the word Centimeter Gram Second. Some countries in Europe use the system of CGS units, while the United States prefers the MKS unit system. In this book we will use the MKS system more often. Units of other quantities can be seen in various textbooks that exist. In the health world we will be faced with many units such as: kg (weight), oC (body temperature), cm3 (volume of fluid to be injected into the body), etc.

Principal Amounts and Derivatives
The quantities used in a calculation often involve the principal amount and the derived quantity. The principal quantity is the undefined basic quantity. Derivative quantities are magnitudes which are composed of more than one principal quantity.
Principal amount
1.length (distance) meter (m)
2.Massa kilogram (kg)
3.Second time (sec) or second
4.Temperature Kelvin (K) or Celcius (C)
5.Ampere electric current (A)
6.Candela light intensity (Cd)
7.Number of mole substances (mol)

Derived Quantities
1.M / s speed
2.Level of m2
3.Molume m3
4.God kg.m / dt2
5.dll.