All About Light-Physics - 842 Words

Precious Marie T. Torres 7 – JAENA (SPJ) LIGHT * Light is part of the electromagnetic spectrum, the spectrum is the collection of all waves, which include visible light, Microwaves, radio waves ( AM, FM, SW ), X-Rays, and Gamma Rays. * In the late 1600s, important questions were raised, asking if light is made up of particles, or is it waves .? * Sir Isaac Newton, held the theory that light was made up of tiny particles. In 1678, Dutch physicist, Christian Huygens, believed that light was made up of waves vibrating up and down perpendicular to the direction of the light travels, and therefore formulated a way of visualising wave propagation. * This became known as Huygens Principle. Huygens theory was the†¦show more content†¦MODELS * RAY MODEL – The simplest mode of light. * WAVE MODEL – Color is naturally described in terms of wavelength. Required in order to explain the interaction of light with material objects of sizes comparable to or smaller than a wavelength of light. * PARTICLE MODEL – Required in order to explain the interaction of light with individual atoms. At the atomic level, it becomes apparent that the beam of light has a certain graininess to it. SPEED OF LI GHT The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its value is 299,792,458 metres per second, a figure that is exact because the length of the metre is defined from this constant and the international standard for time. PROPAGATION OF LIGHT * Light and similar forms of radiation are made up of moving electric and magnetic forces. A simple example of motion similar to these radiation waves can be made by dropping a pebble into a pool of water. * The up-and-down motion is transverse, or at right angles, to the outward motion of the waves. This type of wave motion is called transverse-wave motion. The transverse waves spread out in expanding circles until they reach the edge of the pool. * Light radiates from its source in all directions until it is absorbed or diverted by someShow MoreRelatedThe History of Physics Essay1534 Words   |  7 PagesThe History of Physics In order to attempt to trace the origins of the modern science that we now refer to as â€Å"physics,† we must begin with the origin of the term itself. Taken from the Greek word â€Å"physika† meaning growth or nature, physics most obviously began as the intelligent study of the human environment (Webster 393). From superstition and religious practices, the foundation of all other sciences was born. These concepts have subsequently grown into what we regardRead MorePlank, Einstein and Black Body Radiation1400 Words   |  6 Pages19th century physics was mostly thought to be at an apex. One man at the time, William Thomson Kelvin [cited by Glen Elert in The Physics Hypertextbook], said along the lines of â€Å"There is nothing new to be discovered in physics now. All that remains is more and more precise measurement.† This statement was to quickly become fiction with the beginnings of the 1900s. Two major problems in physics were still apparent; Theories on the luminiferous ether. That is the understanding that light is a wave,Read MoreConduction, Convection, and Radiation1525 Words   |  7 PagesConduction, Convection, and Radiation By: Spencer Smith Physics 2010 – Online Dr. Stone 30 April 2014 Physics is a controlling factor in our vast universe. It literally controls how our reality operates and how our existence came to be in this universe, it actually it what made our universe. When you think about physics you probably think about friction and forces but it is a much broader idea. Physics is what controls how the atoms that make up everything work with each other to formRead MoreEssay on Physics in Everyday Life1684 Words   |  7 PagesPhysics in Everyday Life 1 Just about everything you do from moving to eating to listening to music involves physics. Now that I have really explored them I think it is hard to go about our day and not do something that involves physics. Some of the things I will talk about are getting out of bed, the eye and how eye glasses help a person see better, speakers, the Frisbee, sailing, and the pulleys I use to get my jeep unstuck in the mud when I ride in the woods. All of theseRead MoreAlbert Einstein Speech Essay998 Words   |  4 PagesThere were a collection of men most of them smoking cigars and talking and laughing and drinking. Joshua sat down at a table next to a table in which two men sat. One man had baggy clothes and was smoking a pipe. He had Brunette hair, brown eyes and about 33 years old. The other gentleman had brown hair a moustache, glasses and was wearing a suit. He was approximately 54. They were both speaking German, but Joshua was wearing his Universal Translator { * refer back to page 33.} Joshua, GoodRead MorePhysics : The Physics Of Physics1654 Words   |  7 PagesPhysics is defined as a branch of science that explains the properties of matter and energy. The study of Physics offers explanations for many topics like mechanics, light, heat, and electricity. Physics is present in all forms throughout a person’s life. It could be from the smallest crunch of an autumn leaf to the many ways energy is harnessed to support the lifestyle we’ve become accustomed. Physics is literally everywhere. Physics is most strongly presented in my life by automobiles, how physicsRead MoreSir Isaac Newton was one of the greatest physicist and mathematicians of all time. He was born in1600 Words   |  7 Pagesof the greatest physicist and mathematicians of all time. He was born in England on December 25, 1642 on Christmas. He died at the age of eighty four on March 20, 1727. Newton was never married and never had any children. Though he did have three siblings from his mo ther’s second marriage. Some of Newton’s achievements in physics and mathematics are; Newton’s law of universal gravitation, Newton’s three laws of motion, calculus, refraction of light, reflecting telescope, Newton’s law of cooling,Read MoreA Brief History of Time Summary Essay1371 Words   |  6 PagesTheoretical Physics, a modern topic of science with an extremely deterring sound and famous for being beyond complex, is a subject which cannot be explained with ease. Stephen Hawking, the most famous living scientist today, wrote A Brief History of Time in 1988, updated in 1996, in order to take upon this daunting task of explaining basic theoretical physics to a population who had previously barely studied any science. Within A Brief History of Time, Hawking touches upon seven topics in-depth whileRead MoreSir Isaac Newton : The Father Of Modern Physics1185 Words   |  5 PagesWhen asked about how he would be remembered Sir Isaac Newton once s aid,I do not know what I may appear to the world; but to myself I seem to have been only like a boy playing on the seashore, and diverting myself now and then in finding a smoother pebble or prettier shell than ordinary, while the great ocean of truth lay all undiscovered before me(bio.com)†Today, one of the most highly regarded scientists is still Sir Isaac Newton. He should be remembered as the father of modern physics. Sir IsaacRead MoreMy Favorite Class1024 Words   |  5 Pagesstudents would rather be on his or her phone or sleep. My physics teacher, during junior year of high school, is the definition of what school should be. He inspires everyone in the class towards the subject at hand. Due to the inspiration led to knowledge that most people wouldnt have if you run a clock in- clock out outlook. He made the class fun by having group work, labs, class discussion, and experiments that he performed. Mr. Sanfords physics class was my favorite class because the inspiration