A small disturbance in an electric field creates a small magnetic field, which in turn creates a small electric field, and so on. Wave properties depend on what type of energy is making the waves. An instrument that diffracts light into a spectrum for analysis is an example of observing the wavelike property of light. As that light moves through the air, glass and water so that we can see the pen, observe the type of materials it is moving through and circle the correct description.
It should be remembered that visible light occupies only a small portion of the electromagnetic em spectrum. Pdf since ancient times, the nature and properties of light have been. Core describe what is meant by wave motion as illustrated by vibration in ropes and springs and by experiments using water waves use the term wavefront. Are these wavelengths in the uva, uvb, or uvc range of the spectrum. Where do sounds come from sounds are produced by vibrating or oscillating objects. Waves and wave properties presentation pdf teach engineering.
Moreover, if the individual wave packets do not share the same polarization properties, the polarization ellipse varies, statistically, in time. Notes on wave properties and interference definition a form of energy transfer between objects, or that which transmits energy. In this section, we will focus on the wavelike properties of light. When unpolarized light is passed through a polarizer, only the waves in the. Christian huygens proposed that light travelled as waves. Light is absorbed propagation is stopped medium is opaque. Oct 04, 2019 some of the worksheets below are waves worksheets middle school pdf waves and wave properties. Waves waves and their properties 1 learning objectives a compare particle motion and wave motion in different types of waves. If light wave frequency molecules resonant frequency. A presentation types of waves, plane waves, spherical waves, transvesal waves, polarized. Some of the worksheets below are waves worksheets middle school pdf waves and wave properties. What two models do scientists use to describe light. Moreover, if the individual wavepackets do not share the same polarization properties, the polarization ellipse varies, statistically, in time.
Unit 6f electromagnetic wave properties notetaking guide. Wavelike properties of light reflection of a light ray normal i r. Students may have the experience of hearing particularly well across a lake on a warm summer. What is the rounded speed of light in a vacuum in meters per second. Physics 3 properties of waves, including light and sound. You can calculate the speed of a wave if you know its. Insomecircumstances, lighthas wave properties interference and di. All of these waves carry energy in different forms by light, sound and motion. A light source that gives off white light is therefore emitting multiple. Calculate the frequency of the short wave and long wave uv light used in this experiment. For example, 10 waves of wavelength 10 meters will pass by a point in the same. Sound and light waves properties of a wave worksheet.
A wave is a disturbance which propagates energy and momentum from one place to the other without the transport of matter. Light consists of photons particles with no mass which travelatthespeedoflight. The speed of the wave is simply the speed of the wave as it approaches a ship. A light typically shines upon the ripple tank from above and illuminates a white sheet of paper placed directly below. The faster waves travel, the more crests or compressions pass by you each second. Notes on wave properties and interference definition a form of energy transfer between objects, or that which transmits energy o mechanical requires a medium to transmit the energy through o non mechanical does not require a medium to transmit energy wave types. Until the middle of the 1800s, the generally accepted theory of light was the particle picture. But first, its dual attributes of continuous wave and discrete particles as descri bed by hopkins 1999 the wavelike property of light. Electromagnetic waves are ultimately produced by an accelerating charge.
Dispersion we often face this phenomena in our lives. Worksheets on wave properties, light and sound teaching. A presentation types of waves, plane waves, spherical waves, transvesal. The velocity of light in a medium is constant but changes with change of medium. General properties of light in vacuum light always travels at the same speed.
As a wave, the properties of light are characterized. Properties of waves worksheets teachers pay teachers. Properties of light university of maryland college of. So, if the frequency of light increases, what happens to the wavelength of light. As shown below, an electromagnetic wave is a transverse wave consisting of mutually perpendicular oscillating electric and magnetic fields. This worksheet contains basic conceptual questions about the properties of waves. The distance between one point on a wave and the exact same place on the next wave. Sound is a longitudinal wave produced by a vibrating source that causes regular variations in. When unpolarized light is passed through a polarizer. Polarization of light is evidence that light is a transverse wave. None of the properties of a wave are changed by diffraction. Sir isaac newton believed that light was a stream of particles. Second, the position of the wave is determined by its speed in the xdirection.
Refraction and interference are evidence that light is wavelike in nature. Although either is an acceptable description of light, for our purposes in introductory astronomy the wave. Indeed light is just one form of electromagnetic radiation. This worksheet covers properties of waves, energy, and light and.
In this lab, you will create lines of sand from a swinging cup and study. A crest of water will absorb more light than a trough. On the transverse wave, label a crest and a trough. Smith oregon center for optics and department of physics university of oregon, eugene, oregon 97403 abstract james clerk maxwell unknowingly discovered a correct relativistic, quantum theory for the light quantum, fortythree years before einstein postulated the photons existence. So, the bright spots represent wave troughs and the dark spots represent wave crests. Based on these observations, we see that the vertical displacement of the wave y is a function of both xand t. 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. An example of refraction of sound is when it travels from a. An electromagnetic wave is a transverse wave consisting of oscillating electric and magnetic fields. The largest ocean wave ever measured accurately had a wavelength of 340 m, a frequency of 0.
Diffractionif the light is a wave process, along with interference there should also be light diffraction, as it is inherent in any wave motion. The wave characteristics you will observe in this lab are common to all waves water, light, sound, etc. In 1927, davisson and germer confirmed the wave properties of particles by diffracting electrons from a nickel single crystal. However, in the late 1800s, the particle picture was. Toaverygoodapproximation, lighttravelsinstraightlines, and behavesmuchlikeaparticle. If the surface is flat, the angle at which the wave hits the surface will be the same as the angle at which it leaves the surface angle in angle out. Visible light has wavelengths in the range 400 700 nm or frequencies of 7. Use your prior knowledge and the book to fill in the following blanks, then go in the hall and. A presentation wave types, mechanical waves, electromagnetic waves, parts of transverse waves, and questions like why are we able to see.
The beam thus loses its property of being monochromatic, becoming a quasimonochromatic wave. You can calculate the speed of a wave if you know its wavelength and frequency using the equation below. In modern physics, light or electromagnetic radiation may be viewed in one of two complementary ways. A portion of light is absorbed by the water as it passes through the tank. The wave properties of light gives rise to interference between multiple paths, where. Today, scientists view the behavior of light as waves electromagnetic waves in. Light is described as an electromagnetic radiation that consists of two waves, the electric and magnetic waves, which are perpendicular to each other in the direction that the wave is travelling. These gif files are animations showing the reflection of a wave off a free and fixed boundary. What is one wavelength equal to in a transverse wave. Werner heisenberg and a little later erwin schrodinger developed theories based on the wave properties of particles. All light has both particlelike and wavelike properties.
This helps to explain some of the wave properties of light. Theyhaveenergy,andonemeasure of this energy is the wavelength of the light. Description students explore the properties of waves. The physics of polarization high altitude observatory. When you display the slide show, the animation should begin automatically. Sound is a longitudinal wave produced by a vibrating source that causes regular variations in air pressure p in diagram above. Waves change at b oundaries of media so the properties of the medium determine the wave o depth of water, tension and density of rope, temperature of air, etc. The different colours of light are due to different wave lengths of these waves. The higher the frequency, the more energy in the wave. As a wave, the properties of light are characterized according to speed, wavelength and frequency. Sound has all the properties of a wave, namely reflection, refraction, diffraction and interference.
How an instrument is designed to sense the light influences which of these properties are observed. Suppose a plane wave falls on a plane reflecting surface as is shown in figure 2a. But if you pay more attention, youll see that dispersion always accompanies us. A set of comprehensive notes that follow the gcse wave properties topic. The nature of light uw madison astronomy department. Why might a material protect better against short wave light than long wave light.
While you will later learn about waveparticle duality how light behaves as both a wave and a particle at the same time, here we shall discuss the wave nature of light and the experimental effects of this behavior. In this viewpoint, advocated by newton, light was considered to be a stream of tiny particles. Amplitude and energy the vibrations that produce a wave transfer energy to the wave. This worksheet is a compilation of past questions covering general wave properties, light and sound. Diffraction occurs when a wave passes an edge, passes through a narrow gap or goes past an object. On the longitudinal wave, label a compression and a rarefaction.
The wavelength, frequency, period and speed are same before and after diffraction. Again, the only change is the direction in which the wave is travelling. Huygens principle 2 source new wavefront problems with the theory. The amplitude of the wave was 17 m, so the ship was. Light waves vce the question of what is light was a matter of great debate during the 17th and 18th century. Light travels at 186,00 miles per second 300,000 kilometers per second in a vacuum. All waves have 4 major characteristics that effect how the wave behaves and. So that particles can return to their mean position, after having been disturbed. Describe the dual nature of light, as a continuous wave and a discrete particle.
Nov 03, 2019 a set of comprehensive notes that follow the gcse wave properties topic. For example, the wavelength of blue light is about 450 nanometers, while the wavelength of red light is about 700 nanometers. First, the shape of the wave does not change with time t. The reason that different waves of light appear to be different colors of light is because the color of a light wave depends on its wavelength. While you will later learn about wave particle duality how light behaves as both a wave and a particle at the same time, here we shall discuss the wave nature of light and the experimental effects of this behavior. You might also like crossword puzzle properties of waves.
Chapter 2 the properties of electromagnetic radiation radio jove. Light, reflection, and color characteristics of light light is an electromagnetic wave. Lab wave properties in a spring georgia public broadcasting. Although either is an acceptable description of light, for our purposes in introductory astronomy the wave description will be more useful. Core describe what is meant by wave motion as illustrated by vibration in ropes and springs and by experiments using water waves use. A light source that gives off white light is therefore emitting multiple waves of light with a wide range of wavelengths from 450 nanometers through 700 nanometers. Lesson 2, light properties worksheet 1 light properties worksheet 1. In this section, we will focus on the wave like properties of light.
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