11/13/2022 0 Comments Speed of light vs speed of soundAreas with more dots (corresponding to peaks) show high air pressure, while whiter areas (corresponding to throughs) show areas of low pressure that interact to create sound. Two ways to represent the physics of sound. They will then collide with your eardrums, which ‘translates’ it into the sensation of sound. This will push the air in their immediate vicinity, which will make its molecules collide with air molecules farther away, and so on, until the motion reaches the air particles next to you. When someone speaks, their lungs collide with and push out air that their vocal cords modulate to create certain sounds. In very broad lines, any object in motion will come into contact with the particles in their environment. Sound is, fundamentally, a movement or vibration of particles, most commonly those in the atmosphere, where we do most of our talking and sound-making. What we perceive as sound is actually motion. But first, let’s start at with the basics: What is a sound wave Let’s take a look at why this limit exists, what says it should be this way, and just why things go boom when you blast through it. What three examples of electromagnetic energy are mentioned in the text? Q43.In Earth’s atmosphere, sound can travel at around 345 meters per second. Table 1-2.≼omparison of Light Waves and Sound Waves SOUND WAVES LIGHT WAVES VELOCITY IN AIR APPROXIMATELY 1,100 FEET PER SECOND APPROXIMATELY 186,000 MILES PER SECOND FORM A FORM OF WAVE MOTION A FORM OF WAVE MOTION WAVE COMPOSITION LONGITUDINAL TRANSVERSE TRANSMITTING MEDIUM ALL SUBSTANCES EMPTY SPACE AND ALL SUBSTANCES EXCEPT OPAQUE MATERIALS RELATION OF TRANSMITTING MEDIUM VELOCITY TO VELOCITY THE DENSER THE MEDIUM, THE GREATER THE SPEED THE DENSER THE MEDIUM, THE SLOWER THE SPEED SENSATIONS PRODUCED HEARING SEEING VARIATIONS IN SENSATIONS PRODUCED A LOW FREQUENCY CAUSES A LOW NOTE A HIGH FREQUENCY, A HIGH NOTE A LOW FREQUENCY CAUSES RED LIGHT A HIGH FREQUENCY, VIOLET LIGHT Q42. For a comparison of light waves with sound waves, see table 1-2. A change in the frequency of a light wave causes a visual sensationa difference in color. A change in frequency of sound waves causes an audible sensationa difference in pitch. Violet light is produced at the high- frequency end of the light spectrum, while red light is produced at the low-frequency end of the light spectrum. Likewise, a certain range of light frequencies produces sensations that you can see. A more rapid sound vibration (higher frequency) produces a higher note. A slow vibration ( low frequency) in sound gives the sensation of a low note. A certain range of sound frequencies produces sensations that you can hear. Sound travels through all substances, but light cannot pass through opaque materials. Light travels approximately one-third slower in water than in air. The denser the medium, the greater the speed of sound. Although both are forms of wave motion, sound requires a solid, liquid, or gaseous medium whereas light travels through empty space. The second difference is that sound is composed of longitudinal waves (alternate compressions and expansions of matter) and light is composed of transverse waves in an electromagnetic field. Sound waves travel through air at the speed of approximately 1,100 feet per second light waves travel through air and empty space at a speed of approximately 186,000 miles per second. 1-32 COMPARISON OF LIGHT WAVES WITH SOUND WAVES There are two main differences between sound waves and light waves.
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