Chapter 1 Introduction1.1 physics science and technologyPhysics (Physics) comes from the Greek, meaning that nature (nature) is the science that studies about the mass and energy to explain the observed natural phenomenon or problem solving that mystery in nature.Physics education split into two categories as follows:1. physics (Classical Physics) is an old-time education to research and guidelines that will lead to better explain natural phenomenon. Noticeable with eyes. This means that the education system is about the mass of big size, such as the movement of objects.2. modern physics (Modern Physics) is an academic, what mystery does not see with the naked eye, visible, such as the atomic structure. The energy from the radioactive decay of the elements, etc.Science (science) refers to the study of natural reality, both with life and no life is divided into two branches, as follows:1. physical science (Physical science) is the study of the nature of life is not about what is significant is that physical science 2, physics and chemistry.2. life sciences (Biological science) is the study of various creatures about.Approach to scientific knowledge, or physics.1. one approach (approach by experience) is a 5-step derived elements.1.1 1.2 1.3 recording observations and experiment analysis 1.5 1.4 Summary.2. the second approach (approach by theory).2.1 using creative new knowledge. Based on the data from the original knowledge.2.2 create a defendant try thought (or theory or conclusion) new.2.3 trial to prove authenticity of the defendant thought that try to create a new.Scientific knowledge, according to the guidelines. Starting from observation and experiment, butStart by creating a defendant try thought up first, and then prove verification later.Technology (technology) refers to the science of art in the creation, production, or about the use of various materials to the human benefits directly related or living things human.1.2 PhysicsThe physics students will be as understanding and accumulated over time in 400 years.Which is a fundamental part of the study is to make the system easy to learn and study the various matters in the end is all related. Learning to understand the principles of Nazi principles. until application. The main application to be able to practice with the practice or problems as one of the significant part that students should try to think for yourself. The training, which is physics or thinking.2.Scientists to conduct experiments. In addition, students with a better understanding of the concrete and then. Also, learn how to practice experiment and analysis results in the way that scientists.1.3 physical quantities and unitsThere are 2 types of physics quantity is.1. quantity (Scalar quantity)» notke comes as the quantity, but the size alone, such as mass, velocity.2. the quantity vector (Vector quantity) is a quantity that has both size and direction, such as weight, speed.Scientific measuring instruments, or physics.Scientific measuring instruments are as follows.1. measurement tools help our measure to quickly and safely.2. measurement tools, we can measure the various global awareness of the human cannot verify directly.3. the various tasks necessary physics or science requires access to tools that help.Gauge allows the acquisition of new information that requires ***Measurement displayGeneral measuring tools will display two different measurements.1. display the measurement scale like the tick, wooden ruler, meter, gauge, etc.2. the numerical measurement, such as meter, timer, etc., cars.The unit of measurementUnit (unit) is the name used by the original quantity using different systems. The current standard by international organization that offered the same system unit. The system is called ' international ' (Systeme International unit.Abbreviated Units) Unit SI (SI unit)The base unit (base unit) as the primary unit of the SI unit of 7 table.Base quantity.The name of the unitThe symbol.Length (lengh)M (metre)mTime (time)Second (second)sMass (mass).Kg (kilogram)kgTemperature (temperature)Kelvin (Kelvin)KElectricity (Electric current)A (Ampere).AThe quantity of the substance (Amount of substance).MOL (Mole)molThe intensity of light (Luminous intensity).Candela (candela).cd3.Derivatives (Derived units) unit is a unit which contains the base unit in a multiple unit relevant division or multiplication, such as the characteristic velocity (m/s) and strength (kg.m/s2), etc.(Supplementary Units) unit is a unit that has a special name, there are two units of angle measure is on the plane (plane angle) are called radials (Radian, Rad) and angle measure tons (Solid angle) called steradian (Sr, Steradian).1. radian is the angle between the plane occurred on the radius of the circle, one of which was supported by the curve of the circle whose length equals the radius of the circle, then.2. the steradian is the solid angle with a vertex is at the center of the sphere, which is supported by the surface of a sphere whose area is equal to the radius of the sphere are two.What are the consequences of kathop accuracy measurements.1. measuring tools should be tools that meet international standards.2. how to measure and choose the tools used to measure depends on several factors, such as if a short measure.But if a ruler may be used to measure distances between stars, it may be used by the main significant new ways, methods, and tools used to measure must affect very few things to measure.3. conduct measurements to measure the knowledge
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