Slide 1 : Good day !
PHYSICS : PHYSICS
Slide 3 : WHAT IS PHYSICS ?
Physics is the science that deals with the study of matter and energy. : Physics is the science that deals with the study of matter and energy. Physics deals with, among others, fundamental concepts like time, motion, forces, space, matter, energy, gravity, and radiation.
Physics is divided into its major subdivisions : : Physics is divided into its major subdivisions : Mechanics Properties of Matter Heat Sound and Wave Motion Electricity and Magnetism Optics Modern Physics
Mechanics deal with the study of motion and forces affecting the motion of bodies. : Mechanics deal with the study of motion and forces affecting the motion of bodies. Heat is a branch of physics which is concerned with the study of temperature and its effect on the properties of energy, the transfer of heat energy, and conversion of heat into work or work into heat.
Properties of matter are often included in the study of mechanics. : Properties of matter are often included in the study of mechanics. Wave motion involves the transfer of energy by means of a periodic disturbances through a medium. Electricity and Magnetism includes the study of electric and magnetic fields and their interactions, the motion of electric charges through conductors and simple electric circuit.
Optics is the study of the nature and behavior of light, its passage through different transparent media, and its behavior in a phenomena such as reflection, refraction, diffraction and polarization. : Optics is the study of the nature and behavior of light, its passage through different transparent media, and its behavior in a phenomena such as reflection, refraction, diffraction and polarization. Modern Physics as the word implies, is of relatively recent development such as X-ray, radioactivity, binding energy of nuclear particles, fission and fusion.
Slide 9 : Major Fields of Physics Classical Physics All scientific physical inquiries conducted before 1895. It covers mechanics, heat, sound, light, electricity, and magnetism. Modern Physics Includes the study of relativistic mechanics, nuclear physics, atomic physics, quantum mechanics, particle physics, and solid-state physics.
Slide 10 : Modern Physics was brought about by the discovery and scientific investigations of the following physicists. Wilhelm Roentgen ( 1845 – 1923 ) Identified X rays in 1895. X rays are electromagnetic radiation of extremely short wavelengths. Sir Joseph John Thomson ( 1856- 1940 ) Discovered electron in 1897. Electron is a tiny particle bearing little of the atom’s mass but all of its negative charges
Slide 11 : Max Planck ( 1858 – 1947 ) Formulated the quantum theory. In 1900 he proposed that energy is radiated not in smooth, continuous streams but in discrete packets called quanta. Antoine Henri Becquerel ( 1852 – 1908 ) French physicist who discovered radioactivity through his investigations of uranium in 1903. Radioactive rays are radiations that act on unexposed photographic plates just like the action of light on photographic films.
Slide 12 : Albert Einstein ( 1879 – 1955 ) Discovered the theory of relativity in 1905 which changed man’s total view of physical world. His famous equation, E = mc2 , proves that the matter and energy are interconvertible.
Slide 13 : How important physics is ? Physics is all around us. There is physics in our everyday life, from the moment we wake up, cooking , washing clothes, even answering your cellphone , we make use principles of physics. Knowing these principles enables us to appreciate, comprehend or understand, and interact better with our environment. Physics makes our lives more comfortable and enjoyable. Modern means of transportations and communications, advancement in medicines, agriculture and industry , all brought about by the application of principles of physics.
Slide 14 : Who wants to be a scientist ? A scientist not only proves theory using reasoning but rather through experiments. And a scientist follows a method called scientific method. 1. Observe closely a given phenomenon. 2. Formulate a problem or pose a relevant question. 3. Make an educated guess – state a hypothesis. 4. Perform an experiment to test the hypothesis. 5. Draw a conclusion based on experimental outcome.
Slide 15 : Scientist attitudes and qualities are as follows : Rationality Believes that everything that happens has a cause or reason. Curiosity Shows interest and pays particular attention to objects or events.He asks questions and seeks answers. Objectivity He does not allow his feelings and biases to influence his recording of observations, interpretation of data, and formulation of conclusions.
Slide 16 : Critical-mindedness Bases suggestions and conclusions on evidences. When in doubt, he questions the veracity of a statement in relation to the evidences presented. Open-mindedness Listens to and respect the ideas of others. Accepts criticism and changes his mind if reliable evidence contradicts what he believes. Inventiveness Can generate new and original ideas.
Slide 17 : Risk - taking Expresses his opinions and tries new ideas even at the risk of failure or criticism. Intellectual Honesty Gives truthful report of observations. He does not withold important information just to please himself or others. Humility Humble in admitting that he is not free from committing errors.Recognizes that there may be better ideas and individuals that may have consulted to arrive at correct observations and conclusions.
Slide 18 : Responsibility Actively participates in a task and also dutifully performs tasks assigned to him. NOW... If you have these attitudes and characters, you may become a scientist. THE END Thank you ...