Visible light visible light and colour ocr gateway. All the topics considered in the gcse physics syllabus the. Revise for your gcse exam by playing this quiz for year 10 and year 11 students. Since light moves in straight lines, changing directions when it interacts with materials, it is described by geometry and simple trigonometry. An image is a point in space from where light rays can be considered to cross each other. At the beginning of the 20th century, it became known that the wave theory of light often becomes inadequate for treatment of the interaction of light with matter, and light often behaves somewhat like a stream of particles. Further notes not needed for a gcse physics exam, just for the more curious. However, the light rays are hitting the water drop over half of its surface, and, depending on the angle of incidence, you may get reflection, refraction or both at each interface air water and water air. Waves equations and definitions gcse gorillaphysics. New material on forces, machines, motion, properties of matter, electronics and energy actual gcse and standard grade exam questions problemsolving investigations practice in experimental design. Igcse physics by duncan, tom, kennett, heather and a great selection of related books, art and collectibles available now at.
Friction in solids and liquids refraction of light ray optics magnetic effect of electric. The questions provided are also a useful starting point for your revision. The extraordinary story of mankinds fascination with light by brian clegg. Nature of light, geometrical optics, optical instrumentation, dispersion, prisms, and aberrations, wave equations, em waves, polarization, fresnel equations. Each individual ray is still reflecting at the same angle as it hits that small part of the surface.
Apr 17, 2014 this revision video covers all the main aspects of light needed for igcse physics, reflection, refraction, the thin converging len and the dispersion of light. From explaining sound travels, to the astonishing fact that two light rays can come together and make darkness waves make the most fascinating study. Light is an electromagnetic wave and the straight line paths followed by narrow beams of light, along which light energy travels, are called rays. Radio waves are used mainly in communication over short or long distances. Oscillation moving to and fro about a certain position along a line.
A whistlestop tour through the scientific history of light. Light rays from the same point on a distant object must be nearly parallel while entering the eye and more easily converge to produce an image on the retina. Concave lens caves inwards causing light rays to spread out diverge. There are two laws that govern how light changes direction when it interacts with matter. Light physics gcse revision buddy science homework help. Gcse science physics 91 triple reflection of waves youtube. Buy gcse physics revision guide and exam practice book for all boards. Free physics books download ebooks online tutorials downloadable e books downloads zip chm rar. The diagrams show a water wave being reflected at a barrier, and a light ray being reflected at a plane mirror.
Light physics gcse revision buddy science homework help ks4. This resource includes 3 whole questions 21 marks total relating to light rays, lenses and properties of mechanical waves etc. Larger than in size the waves wall chart is ideal for your physics classroom. Short sight rays of light focus in front of the retina, can be corrected with concave lenses. Be sure to choose the guide appropriate to your exam specification. This part of optics, where the ray aspect of light dominates, is therefore called geometric optics.
Gcse science physics 9 1 triple visible light freesciencelessons. Learn about and revise visible light and colour with gcse bitesize physics. Aqa revision guide with online edition higher cgp gcse physics 91 revision by cgp books 29 apr 2016. Oscillations power our cars and cause bridges to collapse. Sunbeds emit ultraviolet light to give an artificial tan. Reflection from a plane mirror and a concave mirror.
Find the top 100 most popular items in amazon books best sellers. This revision video covers all the main aspects of light needed for igcse physics, reflection, refraction, the thin converging len and the dispersion of light. When parallel light rays hit a convex mirror they reflect outwards and travel directly away from an imaginary focal point f. Focal length the length between the middle of the lens and the point at which it would focus parallel rays of light. Gcse science physics 91 triple visible light youtube. As shown below, an electromagnetic wave is a transverse wave consisting of mutually perpendicular oscillating electric and magnetic fields. You can then trace these light rays back along their final direction, back to the point behind the mirror which they. Long sight rays of light focus behind the retina, can be corrected with convex lenses. Discover the best physics of light in best sellers.
Reflection of waves aqa gcse physics single science revision. Keywords of this chapter transverse wave wave in which the vibrations are perpendicular to the direction of energy transfer. Tes global ltd is registered in england company no 02017289 with its registered office. The behavior of light rays may be investigated by using a raybox. This clear and easy to follow text has been revised to meet modern exam requirements.
Explain why the gamma rays and the visible light waves reach the earth at the same time. Refraction of light is the change of direction of a light ray when it crosses a. This is useful in optic fibres, which allow a signal to be transmitted long distances at the speed of light because the light is totally internally reflected. This book combines the basics of everything involved in physics. Isaac physics a project designed to offer support and activities in physics problem solving to teachers and students from gcse level. Gcse physics light waves speed colour line spectra. These guides present material in a lively manner, giving you the bare facts up front.
Gcse physics required practical 9 light teaching resources. With the help of igcse physics revision book, the students can easily revise what they have learnt about physics from this book and also brush up their formulas and methods of solving the puzzle. Daydream educations science posters are great learning and teaching tools. Free physics books download ebooks online textbooks. Learn about and revise, sound, light, reflection, refraction and ultrasound with gcse bitesize physics. Learn about the properties of light waves and how they can be reflected, refracted and dispersed with bbc bitesize ks3 science. How light travels light waves ks3 physics revision. Plane mirrors produce a virtual image that is, an image that does not have light rays actually passing through it.
Gcse medical physics revise applications like xrays. When light and other waves change speed when they travel from one transparent to another. X rays were discovered in 1895 by the german physicist wilhelm rontgen also spelled roentgen. Light, reflection, and color characteristics of light light is an electromagnetic wave. It combines a wealth of information in addition to picture diagrams that makes physics fun to learn into less than one hundred pages. The guides also make it clear what you need to know for your course. If you want to learn physics in a very simplistic easy to read fashion, this is the book for you. Objective mhtcet physics physics concepts, physics, physics. So, unless your teacher says otherwise, you should apply newtons law to questions on gravity. This website and its content is subject to our terms and conditions. When you think of medical processes and treatments then biology and chemistry spring to mind. Oct 20, 2016 this has been produced as an extract of the aqa required practical document.
It is designed to be printed two pages to a page and flip on short edge to form a booklet that students can then stick in their books. Waves gcse gorillaphysics gcse and a level physics revision. Intense ultraviolet light in strong sunlight can damage cells which are deep inside skin tissue. Change in the direction of light going from one material into another. Jan 26, 2017 the way light behaves can seem very counter intuitive, and many physicists would agree with that, but once you figure out light waves it all starts to make more sense. If you are studying a different international gcse physics syllabus, or a uk gcse physics syllabus, dont go away. Wave features features of waves gcse physics single science revision bbc bitesize the amplitude is measured as the vertical distance from the xaxis to the top of a peak. Light rays from the same point on a distant object must be nearly parallel while entering the eye and more easily converge to produce an image. Light rays strike wall at an angle greater than critical angle. Gcse physics revision guide and exam practice book for all. A solid introduction that takes us in order through light rays, waves, duality, relativity, and quantum. Waves equations and definitions gcse gorillaphysics gcse. How light travels light waves ks3 physics revision bbc.
In simple terms, electromagnetic radiation of all the frequencies in the visible range of the spectrum, appearing white to the eye is called white light. The whole of light and the electromagnetic spectrum. Economics as social physics, physics as natures economics historical perspectives on. Light the physics of the photon examines the photon phenomenon from several p. White light is a combination of all of the colours in the visible light spectrum. Achieve the highest grades for the 91 course including free revision app. The wavelength is measured as the distance between two consecutive peaks or two consecutive troughs. The content is from aqa and the layout and formatting is my own. Visible light or white light comes above infrared rays. Alevel physicswave propertieswaves wikibooks, open books.
Alevel physicswave propertieswaves wikibooks, open. He received the first nobel prize in physics in 1901 in recognition of the extraordinary services he has rendered by the. In this video, we look at how to use a ray diagram to show the. Earlier light was believed to be of wave nature only. But there are many applications used in hospitals which rely on physics e. Youll waste time in exams and lose marks by referring to einstein.
From wikibooks, open books for an open world rays and gamma rays. Mirrors and lenses come in a variety of shapes to manipulate the light rays in various useful ways. The image is formed where the rays appear to come from behind. The way light behaves can seem very counter intuitive, and many physicists would agree with that, but once you figure out light waves it all starts to make more sense. Cambridge igcse economics by susan grant, cambridge igcse mathematics with cd by ric pimentel, complete physics for cambridge i. Draw in the reflected rays from these incident rays, making sure angle of incidence angle of reflection. Light follows straight lines, or rays, from a source of light to an observer unless it is reflected, by a mirror, or refracted, by a lens, on route. Higher 3 by helen reynolds, darren forbes, lawrie ryan isbn. Physics 101 physics courses gcse physics physics concepts basic physics. Free physics books download ebooks online textbooks tutorials. Longitudinal wave wave in which the vibrations are parallel to the. Gcse physics revision science section covering infrared, light, optical fibres, infrared radiation, lasers and iris recognition and scanning. We use waves to see inside the body, and to analyse our universe. Click here to buy physics books for your gcse or a level and support gorillaphysics.
Electromagnetic waves are ultimately produced by an accelerating charge. This contains all the wavelengths of the visible spectrum at equal intensity. Light and optics grade 8 science flashcards quizlet. These will be perfect for students across the uk and international schools where igcses are taken. Physics igcse 2012 exam revision notes by samuel lees and adrian guillot 1.
Reflection light waves ks3 physics revision bbc bitesize. White light introduction white light spectrum physics. Refraction of light is the change of direction of a light ray when it crosses a boundary between two transparent substances. Gcse physics light learning resources for adults, children, parents and teachers. If your school is closed due to coronavirus then you will still be able to continue with a daily gcse physics lesson on monday, tuesday and wednesday.
Use the topic list to find the desired material or click here for edexcel international gcse physics simplified. From the early waveparticle arguments to the mathematical theory of electromagnetism to einsteins work on the quantization of light, different descriptions of what constitutes light have existed for over 300 years. Light always travels in straight lines although its direction can be changed by reflection or refraction. I have isolated some extension level questions from some extended papers paper 3 for cie igcse physics. Cambridge igcse physics book, notes and study guide for igcse. Revise energy transfers, wave features and diffraction. Youll discover einsteins two theories of relativity at alevel. Isaac physics a project designed to offer support and activities in physics problem solving to teachers and students from gcse level through to university. Light science for kids a simple introduction to optics. Suitable from gcse to alevel, it is colourful, concise and outlines the key concepts of this topic.
Continue these reflected rays back straight behind the mirror using a dotted line to the point where they appear to come from. Suitable for gcseigcse physicsscience courses or their equivalent. He received the first nobel prize in physics in 1901 in recognition of the extraordinary services he has rendered by the discovery of the remarkable rays subsequently named after him. Light physics gcse revision buddy science homework. Reflection of waves gcse physics single science revision bbc. The book is organised for cambridge igcse physics 0625 syllabus, but much of the content will still be relevant to you. However, sometimes, rays of light are totally internally reflected. Ultraviolet light is used to detect forged fake bank notes.
1433 740 1240 1327 774 376 716 345 167 969 1377 1101 1003 732 590 449 1350 181 1292 1316 744 608 71 1291 711 236 271 107 236 975 228 1403 1248 26 755 664