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All these discoveries and those made later belong to Modern Physics. When reading Physics guides and material, you will likely have encountered the terms 'Modern Physics' and 'Classical Physics', if not, and for those who may be new to these terms: Classical Physics comprises all laws and discoveries made up to the end of 19th century, a period in which many discoveries related to micro-world were made. For example, if we want to measure the length of something, we have to use a predefined unit for length, to calculate the weight of an object we have first to take a predefined unit of weight and express the result in its terms and so on. Before making any measurement we have to choose a predefined quantity as a standard of measurement. Therefore, scientists make measurements rather than estimate them, since they have to be very accurate in their studies.Ī scientific study can only be useful if we use accurate measurements. However, these estimations are not very exact and sometimes they mislead us. For example, the distance from home to workplace or school, the time to do homework, the air temperature. Scientists make experiments in lab premises and then they try to find any relationship between the quantities (variables) involved in the study of the targeted phenomenon. This method consists in the reproduction in miniature of a certain phenomenon that occurs in the universe.
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However, these laws and equations have changed and improved over time in light of new discoveries. Then, from the observations made they have formulated laws and equations in order to provide a reasonable explanation for the observed phenomena. For example, scientists have observed planets and stars and through the analysis of their movement and behaviour they have discovered calendars, compasses etc. Scientists have used this method since the antiquity to discover new laws and explain things and phenomena that occur far away from our world or that last over time. All discoveries in Physics are made in one of the following ways: In this section, the methods used in science (especially in Physics) for discovering new thing are discussed. They aim to make Physics relevant and practical so that people may benefit from these discoveries and as a result, their life become easier and happier than before. However, the most important goal of Physicists is to make old, new and emerging discoveries in Physics applicable in daily life. Hence, it is a natural science based on experiments, measurements and mathematical analysis with the purpose of finding quantitative laws for everything - from the micro world (the world that we cannot see as it is composed by very small particles) to the planets, solar systems and galaxies that occupy the macro cosmos. In a broader sense, Physics deals with matter, energy and their interactions. Physics is the branch of science concerned with the nature and properties of matter and energy. In vocabulary, Physics is defined in the following way: These varying perceptions are due to experience and understanding but what is Physics really? What is Physics? The overwhelming majority of people however, consider Physics as a set of natural laws or phenomena explained through experiments and formulae. Young children and teenagers know Physics as a school subject that offers a generic insight on how the world works other people consider Physics simply as a natural science that seeks to explain, in a logical way, the relationship between various natural phenomena.
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Sections and Categories of Physics - Table of ContentsĮveryone has encountered the term "Physics" in various contexts at least once during his/her life experience. links to popular Physics calculators for those who need support with homework, practical application or simply wish to learn a little bit more about Physics within a certain scientific discipline.an introduction to Physics, a tutorial with links to specific categories of Physics with detailed tutorials and calculators.Each section contains written tutorials, video tutorials, revision notes, practice question with answers and related calculators. A linked table of contents for the branches of Physics.
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