In this live Grade 12 Physical Sciences show we take a close look at the Electromagnetic Spectrum. We identify the types and uses of different EM Radiation. X-radiation wavelength ranges from 0.01 to 10 nanometers, or frequencies from 3×10 16 Hz to 3×10 19 Hz. Radio Waves (communications) TV and FM radio (short wavelength) ... sanitary and therapeutic properties have a marked effect on architecture, engineering and public health and have done so throughout history. Microwaves have wavelengths that can be measured in centimeters. 1. Are made up of an electric field and a magnetic field 2. EM waves can travel across the great vacuum of space, which is why we see light from distant stars and planets. Introduction to electromagnetic waves Electromagnetic radiation is one of the many ways that energy travels through space. Frequency is the rate at which the radiating electromagnetic field is oscillating. The electromagnetic spectrum is normally given in order of decreasing wavelength or increasing frequency. 2-1 FUNDAMENTAL PROPERTIES OF ELECTROMAGNETIC WAVES Electromagnetic energy is the means by which information is transmitted from an object to a sensor. Updated February 05, 2019 X-rays or x-radiation are part of the electromagnetic spectrum with shorter wavelengths (higher frequency) than visible light. The electromagnetic spectrum extends from below the low frequencies used for modern radio communication to gamma radiation at the short-wavelength (high-frequency) end, covering wavelengths from thousands of kilometers down to a f… Visible Light Rays. Properties of Electromagnetic Waves Electromagnetic waves are composed of oscillating electric and magnetic fields at right angles to each other and both are perpendicular to the direction of propagation of the wave. In general, signals sent using the higher frequencies have … Know the properties of different types of electromagnetic radiation. PROPERTIES AND USES OF ELECTROMAGNETIC SPECTRUM Gamma rays Radio waves Propeties They have a very high frequency and energy. This puts the x-ray wavelength between ultraviolet light and gamma rays. To do this, he directed sunlight through a glass prism to create a spectrum. In the past few years, the microwave or radio wave region of the electromagnetic spectrum has been explored for possible use in food processing with successful results in microbial inactivation. The electromagnetic spectrum describes a wide range of different electromagnetic waves. This spectrum includes many types of wave that you will recognize including X-rays and infra-red. The electromagnetic waves are grouped into types that have similar wavelengths and so have similar properties. The entire electromagnetic spectrum is extremely broad, ranging from low energy radio waves with wavelengths that are measured in meters, to high energy gamma rays with wavelengths that are less than 1 x 10-11 meters. The electromagnetic spectrum describes all of the kinds of light, including those the human eye cannot see. ; They consist of vibrating electric and magnetic fields at certain frequency in phase with each other , perpendicular to each other and perpendicular to the direction of the wave propagation . Can travel through space 4. Then based on the wavelength of the electromagnetic spectrum, the energy is grouped into different categories. The properties of electromagnetic radiation depend strongly on its frequency. Electromagnetic waves differ in wavelength (or frequency). Unlike sound waves and water waves, electromagnetic waves don't need a fluid, or a solid, or even air to help them travel from one place to another. Are longitudinal waves 3. Electromagnetic Wave Properties 1. Together, they make up what's known as the electromagnetic spectrum. In an electromagnetic wave, the oscillating electric and magnetic fields are in the … Light waves and other types of energy that radiate (travel out) from where they're produced are called electromagnetic radiation. The standard unit for all electromagnetic radiation is the magnitude of the wavelength (in a vacuum), which is usually reported in terms of nanometers for the visible light portion of the spectrum. The LibreTexts libraries are Powered by MindTouch ® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Some of the properties which are common to all electromagnetic waves are amplitude, a characteristic frequency and wavelength, and the ability to travel through a vacuum at the same speed, which is commonly referred to as the speed of light. Electromagnetic wave follows the principle of superposition. The speed of a wave is a product of its wavelength and frequency. All travel at the same speed in a vacuum These magnetic and electric waves travel perpendicular to each other and have some characteristics like wavelength, amplitude, and frequency. This lesson examines how light acts as both a particle and a wave. ; They propagate in the space at constant velocity, which is 3 × 10 8 m/s . They propagate in materialistic media and non-materialistic media ( space ) . However, we will see below that electromagnetic energy slows down when it travels through matter, including minerals. The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. Each nanometer represents one-thousandth of a micrometer, and is measured by the distance between two successive peaks (see Figure 1). These are bundles of light energy or quantized harmonic waves which travel at the speed of light. • electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation • EMR extends over a wide range of energies or wavelengths or frequencies 4. Spectroscopy, primarily in the electromagnetic spectrum, is a fundamental exploratory tool in the fields of physics, chemistry, and astronomy, allowing the composition, physical structure and electronic structure of matter to be investigated at the atomic, molecular and … In this lesson we describe electromagnetic radiation as a vibration of magnetic and electric fields travelling at 'c'. Identify the mistake in the list. The light we can see, made up of the individual colors of the rainbow, represents only a very small portion of the electromagnetic spectrum. 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