Module 3 the nature and properties of light pdf

In bulbs, electric potential is converted to light. Optical instruments ease module 4 integrated science 1 laboratory safety precautions beam iv unit 2. Potter is a professorof material science and engineering in the university of arizona. Properties of multiplication and division and solving problems with units of 25 and 10 this 25day module begins the year by building on students fluency with. When light waves pass through an aperture or across a sharp edge, the light waves spread out. To work in photonics it is necessary to have a basic understanding of the nature of light and its properties. What happens to an electromagnetic wave when it interacts with a particle. Hu light is a transverse wave of the electromagnetic field. The simplest demonstration of the wave nature of light is to throw two stones into a pool of water and watch the waves from each pass through each other and emerge unchanged. The natural light illumination system can be divided into collecting, transmission and lighting components 11. Science az light energy grades 56 physical science unit. Light that is created by people, and does not occur naturally is artificial light. Nature of light light has both wave and particle properties particlelike. Module 6 sample lesson plans in science 2 understand what they are learning in the lesson.

Light can also tell us the relative densities of mediums. The nature of light summary the physics hypertextbook. Glencoe physical science vii organize each wave characteristic in the venn diagram to show whether it is a trait of tides, waves created by wind, or both. However, even an ordinary torch beam is a torrent of 1017 photons. Perhapsthemostnatural test of amaterials mechanical properties is the tensiontest,in which astriporcylinderofthematerial,havinglengthlandcrosssectionalareaa,isanchoredatone end and subjected to an axial load p a load acting along the specimens long axis at the. Using centers to investigate special properties of light. Refraction of different colors when light waves from the sun pass through a droplet of water in a cloud or. Maybe you imagine them as the colors of the rainbow. Light waves can interfere with other light waves, canceling or amplifying them. Before you begin your study of this module, you should have completed a study of module 11, nature and properties of light, and module 1 3, basic geometrical optics. As discussed in module 11, nature and properties of light, light can be understood as consisting of waves traveling through space. In this module you will learn about the nature and properties of light in the following lessons. But it is not necessary to go into detail about that complexity if all you want to do is understand the underlying principles of wave motion and behaviour. Aug 25, 20 module 3 the nature and properties of light 1.

Since light can be analysed as a complex mixture of a huge number of individual. Light occurs in different wavelengths, just as waves on the ocean vary in length. Light may be defined as electromagnetic radiation that. This module discusses the nature and properties of light. This module addresses various nonlaser light sources, such as incandescent lamps, fluorescent discharge lamps, highintensity discharge lamps, flashlamps, arc lamps, and leds.

A rainstorm among open patches of daylight can cast. Module 3 the nature and properties of light what this module is about most of the things that you know you have learned about through your eyes. Speed of light depends on media medium speed ms refractive index vacuum 3 x 108 air 2. Manufacturing properties of engineering materials lecture notes prof. Oct 10, 2018 lightemitting diodes leds, which convert electricity to light, are widely used in modern societyfor example, in lighting, flatpanel displays, medical devices and many other situations. It also explores how colors are formed and how the human eye enables us to see. For collecting sunlight, static light concentrator having a prism like structure is. Teachers need to consider ho w to use and organise the chalkboa rd. Most of the energy lost is in the infrared band which has a heating effect, not a lighting effect. View notes module 3 notes from module 3 at university of florida. When light travels from an optically less dense to denser medium at an angle, say from air to glass, light bends toward the normal figure 3. The wave nature of light was first illustrated through experiments on diffraction and interference.

The amplitude of a light wave is related to its intensity. The transverse nature of light can be demonstrated through polarization. Light may be defined as electromagnetic radiation that is capable of affecting the sense of sight. If the wall opening in the ulbricht sphere, see figure 3. Designed for use as a textbook of general physics 4 treatise on practical light nature volume 88. The section suggests effective use of english language in the science lessons. Figure onedimensional representation of the electromagnetic wave. The basic nature of light nature of light photon terrace. Module 8 from the universe to the atom 53 lessons video lessons by expert teachers that cover the nsw year 12 physics syllabus comprehensively. Any study of the nature of light must explain the following observed properties.

A complete description of the nature of light requires two explanations. Every element of matter is coupled to all other matter on its light cone by timesymmetric interactions. For photovoltaic applications, this level of detail is seldom required and therefore only a few sentences on the quantum nature of light are given here. Put simply, it is all about the dispersal of a short light wave into free electrons and a longer wave. Chapter 33 the nature and propagation of light by c. Introduction a coating of oil on water or a delicate glass prism can create a rainbow. Light functions due to three fundamental properties. The nature of light as a wave a small disturbance in an electric field creates a small magnetic field, which in turn creates a small electric field, and so on light propagates itself by its bootstraps. Module 3 the nature and properties of light free download as pdf file. It is used in compact disc cd players, in which a laser reflecting off a cd transforms the returning signal into music. Thus, the efficiency for the emission of visible light is only 3. Learning pack for light and optical systems unit 3 science focus 8 3 student instructions for use of this learning pack the purpose of this learning unit pack is to provide you with the resources that will help you cover the material from the curriculum that will be tested on the final exam in june.

You also learned how images are formed by mirrors and lenses. Ease module 3 the nature and properties of light deped. The word wavelength is used to express the wave or undulating property of light. It is the distance that light travels in one oscillation, and is often expressed using a unit called nanometer. This complementary nature of light is now well accepted. They maintain their good strength at high and low temperatures. They will examine how white light can be made up of colours.

Module 3 properties and nature of light light is the cosmic messenger that carries messages over the vast expanse of the. Light spectrum the appearance of light depends on its power spectrum how much power or energy at each wavelength daylight tungsten bulb our visual system converts a light spectrum into color this is a rather complex transformation the human visual system color perception light hits the retina, which contains photosensitive cells. Module 3 the nature and properties of light slideshare. Photonics technicians and engineers must master new concepts, learn new techniques, and develop new skills. To the eye, the ray seems to come from behind the mirror. The speed of all electromagnetic waves in vacuum are the same, and is equal to. The nature of light reading assignment chapter 2 of pvcdrom dr. Figure 18 comparing coherent and incoherent light a coherent light. If we were to consider light waves as rays, diffraction. Module 3 the nature and properties of light what this module is about most of the things that you know you have learned about through your.

Module 3 notes module 3 properties and nature of light. Even water waves on the surface of the sea can be very intricate. The stars and planets that make up andromeda might seem to be the. Each of the five waves has the same phase angle along the vertical line yy, and all have the same wavelength. Lesson 1 lesson 2 lesson 3 lesson 4 the nature of light reflection and mirrors refraction and lenses colors, interference and polarization. Optical instruments ease module 2 laboratory apparatus, safety rules and symbols ease module 3 the nature and properties of light probe how many drops. When we see light, what we observe by eye or on film is the average energy per unit area per time arriving. Wavelength is the distance between peaks on a light wave, as represented in figure 21.

Diffraction diffraction is the resultant of the wave nature of light. They will look at the differences between humanmade and natural light and how humanmade light was designed to solve problems in the home and at school. This module discusses the realm of physics to define what physics is, some. You will begin by looking into the features of the earth and how those features are changed over time by erosion, weathering and deposition, as well as looking into what makes up these earth materials. This unit helps students explore the nature of light, the movement of light, natural and manmade sources of light, and the special behaviors and properties of light. What are the common properties and characteristics of light. In addition, you should be able to use algebra, plane geometry, and trigonometry especially the use and. Since these waves consist of oscillating electric and magnetic fields which can exist in empty space, light can travel through a vacuum. For photovoltaic applications, this level of detail is seldom required and therefore only a few sentences on the quantum nature of light. When light travels from air to water, its speed decreases.

Light and illumination a powerpoint presentation by paul e. Changes in matter physical and chemical changes phase changes of matter 4. Light properties of light university of washington. The timesymmetric nature of these interactions make them e ectively instantaneous. Light also helps you identify objects both near and far. Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use. Students will also study the characteristics and properties of light. And rainbows really happen because the light from the sun, the white light, is being refracted by these little water particles.

Now it is time to apply these ideas to some common optical lenses and to show how such devices work. Light allows us to see and gives us information about the universe as a whole. The videos fully explain complex physics questions through animations, firsthand investigations filmed at macquarie university science labs, and tutorials. It is referred to as the particlewave duality, and is summarised by the equation e hf hc 1. Mar 24, 2017 it is a great challenge to substantially improve the practical performance of flexible thermoelectric modules due to the absence of airstable ntype thermoelectric materials with highpower factor. Because none of the rays actually emanate from the image, it is called a virtual image. Many metals have high strength and high elastic module. Now it is also known that the shorter the wavelength is, the more energy is carried by the beam. Chapter 33 nature and propagation of light from vision to digital camera to rainbows to pictures of the early universe light is all around us.

By using the actual content of the sample lessons, it helps pupils to understand science content better. Properties which are responsible for transmission of mechanical waves in a medium are elasticity. Module 3 the nature and properties of light lens optics. Now within the visible light spectrum and ill talk about whats beyond the visible light spectrum in a second youre probably familiar with the colors. It also discusses laser safety in detail, including the human eye, laser hazards, laser safety controls, maximum permissible exposure, laser safety glasses, and laser accidents. Vandergriff director of photonics system engineering science applications international corporation mclean, virginia light plays a vital role in our daily lives. Light is a transverse, electromagnetic wave that can be seen by the typical human.

Like all electromagnetic waves, light can travel through a vacuum. Module 3 the nature and properties of light lens optics light. Much diverse and fundamental knowledge on the nature of. Potters group is centered on the synthesis and study of glass, ceramic, and molecular hybrid.

Alan doolittle most of the figures and text are from the online text for this class, pvcdrom original references are given therein. Each point of an illuminated object emits a continuum of light rays in a. Potter professor, material science and engineering dept, university of arizona. Tutorial covers the properties of diffraction and interference. A convex lens can cause parallel rays of light to converge. Module 4 optical instruments what this module is about in the previous modules, you learned about the properties of light.

The section gives examples of english that can be used in particular activities. A complete physical description of the properties of light requires a quantummechanical analysis of light, since light is a type of quantummechanical particle called a photon. In this activity, students will explore the magnifying properties of the lenses and. It delves into the concepts of reflection, refraction, colors, interference, and polarization. Most of the chemical and optical properties of a substance are. Optical properties glasses are among the few solids that transmit visible light thin film oxides might, but scattering from grains limit their thickness mica windows at acoma pueblo glasses form the basic elements of virtually all optical systems. A medium is optically dense if it slows down the speed of light. This part can help them consider and improve upon the way they plan the use of the chalkboard. Based on a demand by end customers for higher bandwidth, fiber penetration in the loop plant starts becoming noticeable as well. The catalyst was pretreated in 20 standard cubic centimeters. Intensity is the absolute measure of a light waves power density. Why do some objects appear transparent or opaque, clear or colored. How can it be used to identify elements and chemical composition. In this module, you will begin working on the topic of earth and space science.