1 / 13

Size of a Wave

Size of a Wave. Rick Graziani Cabrillo College. Speed of Light. Speed of light = 186,000 miles/sec or 300,000,000 meters/sec (approx.). Start here. End here. 1 second. 186,000 miles. Mile: 0. Mile: 186,000. 1 mile 5,280 feet per mile; so 186,000 miles = 982,080,000 feet

ccorbett
Télécharger la présentation

Size of a Wave

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Size of a Wave Rick Graziani Cabrillo College

  2. Speed of Light Speed of light = 186,000 miles/sec or 300,000,000 meters/sec (approx.) Start here End here 1 second 186,000 miles Mile: 0 Mile: 186,000 1 mile • 5,280 feet per mile; so 186,000 miles = 982,080,000 feet • 63,360 inches per mile; so 186,000 miles = 11,784,960,000 inches Rick Graziani graziani@cabrillo.edu

  3. Wavelength http://eosweb.larc.nasa.gov/EDDOCS/wavelength.html • Speed of the wave = Frequency x Wavelength • Wavelength = Speed of the wave / Frequency • Wavelength = Speed of the wave / Frequency • 10.93 feet = 982,080,000 feet / 90,000,000 All About Wavelength Rick Graziani graziani@cabrillo.edu

  4. Speed of Light Speed of light = 186,000 miles/sec Mile: 0, beginning of rope Mile: 186,000, end of rope Length of rope 186,000 miles long 0 seconds After 1/2 second After 1 second 0 second 1 second 1 second • Length of rope 186,000 miles long traveling at the speed of light, 186,000 miles/second • In 1 second we would see the entire length of rope go by. Rick Graziani graziani@cabrillo.edu

  5. Speed of Light – 1 Hz Speed of light = 186,000 miles/sec Mile: 0, beginning of rope Mile: 186,000, end of rope Length of rope 186,000 miles long 186,000 miles 0 second 1 second • So, if 1 Hz is 1 cycle per second, traveling at the speed of light…. • The length of the wave would be 186,000 miles long (300,000,000 meters). Rick Graziani graziani@cabrillo.edu

  6. Speed of Light – 2 Hz Speed of light = 186,000 miles/sec Mile: 0, beginning of rope Mile: 186,000, end of rope Length of rope 186,000 miles long 93,000 miles 0 second 1 second • 2 Hz is 2 cycles per second, traveling at the speed of light…. • The length of each wave would be 186,000/2 or 93,000 miles long (150,000,000 meters). Rick Graziani graziani@cabrillo.edu

  7. Speed of Light – Let’s do inches 11,784,960,000 inches 6,000,000,000 inches • 11,784,960,000 inches in a mile • 1 Hz wave = 11,784,960,000 inches (11 billion inches) • 2 Hz wave = 11,784,960,000 / 2 = 6 billion inches (give or take) • What would a wave the size of 11 GHz wave be? Rick Graziani graziani@cabrillo.edu

  8. Speed of Light – Lets do inches Mile: 186,000, end of rope Length of rope 186,000 miles long Mile: 0, beginning of rope Length of rope 11.8 billion inches long 1 2 11 billion … 1 inch 0 second 1 second • What would a wave the size of 11 GHz wave be? • Size of the rope divided by the number of pieces = size of each piece • About 1 inch! (11,784,960,000 inches / 11,000,000,000 pieces or cycles or Hz) • Same as slicing up the 186,000 mile rope into 11 billion equal pieces. • Each piece is 1 inch, 11 billion pieces equal 11 billion inches, the size of our rope traveling at 186,000 miles per second. Rick Graziani graziani@cabrillo.edu

  9. Speed of Light – Lets do inches Mile: 186,000, end of rope Length of rope 186,000 miles long Mile: 0, beginning of rope Length of rope 11.8 billion inches long 1 2 1 billion … 11.8 inches 0 second 1 second • What would a wave the size of 1 GHz wave be? • 11 inches! (Actually, 11.8 inches because we rounded off values.) (approx.: 11,784,960,000 inches / 1,000,000,000) • Same as slicing up the 186,000 mile rope into 1 billion equal pieces. • Each piece is 11 inches, 1 billion pieces equal 11 billion inches, the size of our rope traveling at 186,000 miles per second. Rick Graziani graziani@cabrillo.edu

  10. RADM Grace Hopper • Grace Hopper, “Mother of Cobol” • The size of a nanosecond, 11.8 inches • The distance the speed of light travels in a billionth of a second. Rick Graziani graziani@cabrillo.edu

  11. Size of a 2.4 GHz WLAN wave Mile: 186,000, end of rope Length of rope 186,000 miles long Mile: 0, beginning of rope Length of rope 11.8 billion inches long 1 2 2.4 billion … 4.8 inches 0 second 1 second • Same as slicing up the 186,000 mile rope into 2.4 billion equal pieces. • Each piece is 4.8 inches or 12 cm (.12 meters) (approx.: 11,784,960,000 inches / 2,400,000,000) • 2.4 billion pieces equal 11 billion inches, the size of our rope traveling at 186,000 miles per second. Rick Graziani graziani@cabrillo.edu

  12. Size of a 5.8 GHz WLAN wave Mile: 186,000, end of rope Length of rope 186,000 miles long Mile: 0, beginning of rope Length of rope 11.8 billion inches long 1 2 5.8 billion … 2 inches 0 second 1 second • Same as slicing up the 186,000 mile rope into 5.8 billion equal pieces. • Each piece is 2 inches or 5 cm (.05 meters) (approx.: 11,784,960,000 inches / 5,800,000,000) • 5.8 billion pieces equal 11 billion inches, the size of our rope traveling at 186,000 miles per second. Rick Graziani graziani@cabrillo.edu

  13. End of Size of a Wave Rick Graziani Cabrillo College

More Related