Study guide Ch. 17 & 18 Waves‚ Light & EM Spectrum Name___________________________ Study Your Notes‚ textbook‚ worksheets‚ workbook pages & labs to fill in this information: Chapter 17: Mechanical Waves: a disturbance in matter that carries energy from one place to another Transverse Waves: a wave that causes the medium to vibrate at right angles to the direction in which the wave travels. Surface waves: a wave that travels along a surface separating two media Longitudinal
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different ways to study stars‚ planets and moons in the universe; but the most useful would have to be radio astronomy. Despite this‚ there are some who do argue that optical astronomy is the more useful of the two. Radio waves are a form of electromagnetic radiation and are given and received by many devices we use today‚ such as the radio‚ mobile phone or TV‚ but they have also been detected in space. Radio waves have long wavelengths at a low frequency‚ carrying less energy. Radio
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Electricity Electromagnetic Oscillations and Waves Diffraction and polarization of microwaves 4.5.06-00 What you can learn about … Diffraction Focal point Linearity Circularly and elliptically polarized waves Transverse waves Polarizer and Analyzer Constructive and destructive interference Principle: The equivalence between visible light and microwaves as special cases of the total spectrum of electromagnetic waves can be demonstrated using diffraction and polarization of
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PRELIMINARY PHYSICS Syllabus Notes 2007 Andrew Harvey 1st Edition PRELIMINARY PHYSICS Syllabus Notes 2007 Andrew Harvey 1 st Edition Copyright © Andrew Harvey 2007 Preliminary Physics Past Paper Solutions by Andrew Harvey is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 2.5 Australia License. Based on a work at andrew.harvey4.googlepages.com. First Edition published November 2007. 2006 Edition first released June 2006‚ updated July 2007.
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ions; reactions of these are called Complexation 4. Spectrum – electromagnetic radiation either emitted or absorbed by substances 5. Ligand – the species that binds to the metal ions III. Introduction When light interacts with matter‚ the structures and properties of atoms and molecules are determined. This technique is spectroscopy where it absorbs‚ emits‚ or scatters electromagnetic radiation. Electromagnetic radiation has particle-like properties having photons and quantum and wave-like
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themselves into that act like tiny magnets with north and south poles Electricity – The collection of physical effects related to the force and motion of electrically charged particles‚ typically electrons‚ through or across matter and space Electromagnetic Gadget – A machine that consists of a coil
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always move at the constant speed of about 300‚000 km/sec (186‚000 mi/sec) when they are in a vacuum. When light diffracts‚ or bends slightly as it passes around a corner‚ it shows wavelike behavior. The waves associated with light are called electromagnetic waves because they consist of changing electric and magnetic fields. II | | THE NATURE OF LIGHT | To understand the nature of light and how it is normally created‚ it is necessary to study matter at its atomic level. Atoms are the building
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1. i) • Antenna radiation pattern or antenna pattern is defined as “a mathematical function or a graphical representation of the radiation properties of the antenna as a function of space coordinates.” • The radiation pattern is determined in the far-field region and is represented as a function of the directional coordinates. • Radiation properties include power flux density‚ radiation intensity‚ field strength‚ directivity phase or polarization [pic]
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nail‚ a leaf falling from a tree‚ or a rocket flying in space. Mechanical energy pulls‚ pushes‚ twists‚ turns and throws. Radiant Energy Visible light is electromagnetic energy emitted at wavelengths our eyes can see. Electromagnetic energy emitted at wavelengths we cannot see may take the form of infrared radiation‚ ultraviolet radiation‚ X-rays‚ gamma rays‚ and radio waves. Gamma rays have wavelengths much shorter than visible light. Radio waves are the opposite. Their frequencies are far
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P1 AQA – Revision Notes 1. Heat Transfer • Thermal radiation = infra-red radiation (beyond red part of visible spectrum) • Surface of sun is 5500 degrees. • Greenhouse effect is the idea that the earth is a greenhouse‚ and the atmosphere is glass that stops substances exiting or entering. • DARK‚ MATT SURFACES emit more radiation than shiny‚ light ones‚ and absorb radiation better. • Conduction: free electrons are given energy where heated and diffuse – this energy is passed on as electrons
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