Quantcast COMPARISON OF LIGHT WAVES WITH SOUND WAVES

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
1-32 COMPARISON OF LIGHT WAVES WITH SOUND WAVES There are two main differences between sound waves and light waves. The first difference is in velocity. 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. 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. Although both are forms of wave motion, sound requires a solid, liquid, or gaseous medium; whereas light travels through empty space. The denser the medium, the greater the speed of sound. The opposite is true of light. Light travels approximately one-third slower in water than in air. Sound travels through all substances, but light cannot pass through opaque materials. Frequency affects both sound and light. A certain range of sound frequencies produces sensations that you can hear. A slow vibration (low frequency) in sound gives the sensation of a low note. A more rapid sound vibration (higher frequency) produces a higher note. Likewise, a certain range of light frequencies produces sensations that you can see. 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. A change in frequency of sound waves causes an audible sensation—a difference in pitch. A change in the frequency of a light wave causes a visual sensation—a difference in color. For a comparison of light waves with sound waves, see table 1-2. Table 1-2.—Comparison 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.   What three examples of electromagnetic energy are mentioned in the text? Q43.   What is the main difference between the bulk of the electromagnetic spectrum and the visual spectrum?


Electrical News
IoE: Internet of Earthquakes?
Data scientists at Jawbone recently published findings on the quake's...
eetimes.com
Apple iPhone 6: Mobile Payments Pioneer?
Apple's latest iPhone could help bring mobile payments to the...
eetimes.com
MIPS Moves Multicore Battle to Clustering
Imagination Technologies launches its I-class I6400 MIPS 64-bit processor with...
eetimes.com
How to Fly Without Catching the Dreaded Lurgy?
On returning from his trip to Brazil, Max was diagnosed...
eetimes.com
Anatomy of an ARM Server Chip
Four out of the top five server IC companies prefer...
eetimes.com
IoT Gives Old Technology New Life
Cypress Semiconductor sees a great deal of potential for SONOS...
eetimes.com
Andes Ready to Rumble in CPU War
With ARM reigning as king of the CPU IP market...
eetimes.com
D-PHY, M-PHY & C-PHY? First Look at Testing MIPI's Latest PHY
One of the significant advantages of MIPI Alliance standards is...
eetimes.com
Homeless in Silicon Valley
Over Labor Day, I thought about the situation for the...
eetimes.com
Wireless Net Takes the Next Train
The first products are about to adopt the new 802.15.4p...
eetimes.com
EEVblog #659 – Medical Plugpack Teardown
What’s inside an IEC60601-1 medical class 5V mains DC-DC plugpack?...
eevblog.com
Ethernet Links Go Green
Everything that uses energy uses too much if it. Energy...
eetimes.com
Android Wear: Where Are the Wares
Here are examples of some of the watches that use...
eetimes.com
Intel Wearables Contest Goes New Age
Emotional prosthetics, modular smartbands and sixth sense necklaces make up...
eetimes.com
EEVblog #658 – Mailbag
Mailbag Monday. Dave opens his mail Spoilers: Keithley 177 Multimeter...
eevblog.com
EEVblog #657 – Maker Faire 2014 Interviews
Some interviews from the 2014 Sydney Mini Maker Faire at...
eevblog.com
The Internet of Things Versus Slumlords
Smart thermostats are not only for the well-to-do. One group...
eetimes.com
IBM Watson Speeds Drug Research
IBM Watson moves from supplying known answers to tough questions...
eetimes.com
Samsung Funds III-V FinFETs in US Lab
Samsung is funding Penn State researchers working to fabricate III-V...
eetimes.com
LG, Samsung Debut Smartwatches, Apple Lurks
LG's G Watch R and Samsung's Gear S do little...
eetimes.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +