points on the crest of a wave. The direction of propagation of a wave is perpendicular to its wavefront. A transverse wave is a wave in which particles of the medium oscillate in the direction of the propagation of the waves. Water waves and electromagnetic waves are examples of this type of waves. A longitudinal wave is a wave which the particles of the medium oscillate in the direction parallel to the direction in which the wave moves Sound waves is the example of this type of waves. What is
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Microwave oven (with no rotating dishes) Background Trying to measure the speed of light using a microwave with different types of food. This experiment is related to physics. Things such as televisions‚ radios and microwaves oven use electromagnetic waves. With the hotspots we can measure the distance between them and then we will have to apply the equation C=FI and then multiply the frequency of the microwave. Then I will compare my results to the one published which is 299‚792‚458 m/s.
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Heinrich Hertz Hertz‚ in 1886‚ constructed a series of experiments to verify J.C. Maxwell’s predictions on the electromagnetic spectrum. Heinrich Hertz ’s First Transmitter from 1886 The instrument used by Hertz incorporated an induction coil to produce an extremely high voltage. This was connected to a circuit with a very small opening‚ with small copper balls on each end. Capacitor plates were used to adjust the capacity of the circuit for resonance. A ring of copper wire with a
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NT1310 Physical Networking Unit 4 Exercise 1: Cabling – Definitions Horizontal Cable- The cabling between and including the telecommunications outlet and the horizontal cross-connect. Backbone Cable- A cable connection between telecommunications or wiring closets‚ floor distribution terminals‚ entrance facilities‚ and equipment rooms either within or between buildings. Patch Cords- Any flexible piece of cable that connects one network device to the main cable run or to a patch panel that in turn
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determines its color. For example‚ when a photon gives off red light‚ you can determine that it does not have a lot of energy because red light is the lowest of visible light on the electromagnetic spectrum. Opposite to that‚ violet light would have the most amount of energy because it is higher up on the electromagnetic spectrum‚ which is because it has shorter
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microwave. Introduction Thin Film Interference When plane electromagnetic wave of wavelength λ is incident on a dielectric surface‚ part of the electromagnetic wave is reflected‚ and part of it is transmitted. If the dielectric is thin‚ i.e. its thickness t is comparable to λ‚ the plane electromagnetic wave will be reflected again at the second dielectric surface‚ as shown in Figure 1. [pic] Figure 1. Electromagnetic waves incident at angle θ1 reflected from the top and bottom surfaces
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integer positive quantum number‚ h is Planck’s constant‚ m is the mass of the particle and L is the length of the box. If we assume that the most intense band in the experimentally observed spectrum can be interpreted as absorption of electromagnetic radiation by an electron as it is promoted from the HOMO to the LUMO‚ we can derive the following expression for the energy absorption E. E =h2 [2ni+ 1]/ (8mL²) (2) the absorption
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Network users and even network architects are not always aware that at certain fragments of the network path‚ information is not being transmitted through wires. Instead‚ it is propagated through the Earth’s atmosphere or space in the form of electromagnetic waves. This might happen when a computer network leases a channel from a communications carrier and the specific link of such a channel is a satellite or terrestrial microwave link. Reference: COMPUTER NETWORKS principles‚ technologies and
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important wave phenomenon‚ the surface wave. It occurs in many physical systems both mechanical and electromagnetic. Mechanical surface waves can exist at the interface between two media with different densities such as the oceans and air. Ordinary sea waves and tsunamis are surface waves. Seismic events can produce both longitudinal and shear waves at the earth’s surface‚ resulting in earthquakes. Electromagnetic surface waves can occur at the interface between dielectric and con-ductive media or between
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volts. Vary the wavelength of the light source (from Infra Red to Ultra Violet) until electrons just begin to be ejected from the sodium surface. State the wavelength and note the speed of the electrons. What is the corresponding frequency of the electromagnetic wave? Why is it called threshold frequency? 2. Repeat the instruction 1 above but allow the light to shine on the metal for a longer time before the wavelength is varied. Is your finding different as found in 1? Justify your finding.
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