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What frequency of sound would have a wavelength thesame size as a $1.0-\mathrm{m}$ -wide window? (The speed of sound is344 $\mathrm{m} / \mathrm{s}$ at $20^{\circ} \mathrm{C} .$ What frequencies would diffract throughthe window?

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$$340 \mathrm{Hz}$$

Physics 101 Mechanics

Physics 102 Electricity and Magnetism

Chapter 15

Wave Motion

Periodic Motion

Mechanical Waves

Electromagnetic Waves

University of Michigan - Ann Arbor

University of Washington

Simon Fraser University

McMaster University

Lectures

03:40

In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space, carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-rays, and gamma rays. Electromagnetic waves of different frequency are called by different names since they have different sources and effects on matter. In order of increasing frequency and decreasing wavelength these are: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.

10:59

In physics, Maxwell's equations are a set of partial differential equations that, together with the Lorentz force law, form the foundation of classical electromagnetism, classical optics, and electric circuits. They underpin all electric, optical and radio such electromagnetic technologies as power generation, electric motors, wireless communication, cameras, televisions, computers, and radar. Maxwell's equations describe how electric and magnetic fields are generated by charges, currents, and changes of these fields. The equations have two major variants. The microscopic Maxwell equations have universal applicability but are unwieldy for common calculations. They relate the electric and magnetic fields to total charge and total current, including the complicated charges and currents in materials at the atomic scale. The macroscopic Maxwell equations define two new auxiliary fields that describe the large-scale behaviour of matter without having to consider atomic scale details. The equations were published by Maxwell in his 1864 paper "A Dynamical Theory of the Electromagnetic Field". In the original paper Maxwell fully derived them from the Lorentz force law (without using the Lorentz transformation) and also from the conservation of energy and momentum.

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So is this question. We have a window that is one meter wide, and we have some waves that would refract Syria. And we want to ask if the speed of some is 344 meters per second. Then what? Uh what is a sound way? What ihsaa frequency of sound way So that it has the way plants lambda over what meter? So they're the same as a waste of the window. So we use f equals B over linda meters. A second of Lambda is one meter to get 1.0 meter to get ah, frequency is 244. But again, we only have two significant numbers. So 340 hurts. And then the question asks, What kind of some way will have significant defections through the window? Significant diffraction only happens if the way plants its larger is. He has the size we're talking about. So it order for some wave to have two fracked action through this window. The wave less has to be larger. Someone meter. So what that means is great place larger than one meter. That means of frequency has to be lowers and 340 hurts in order for such a fraction to happen

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