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Size of a Wave Rick Graziani Cabrillo College. Rick Graziani Speed of light = 186,000 miles/sec or 300,000,000 meters/sec (approx.)

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Presentation on theme: "Size of a Wave Rick Graziani Cabrillo College. Rick Graziani Speed of light = 186,000 miles/sec or 300,000,000 meters/sec (approx.)"— Presentation transcript:

1 Size of a Wave Rick Graziani Cabrillo College

2 Rick Graziani Speed of light = 186,000 miles/sec or 300,000,000 meters/sec (approx.) 1 second 186,000 miles Mile: 0Mile: 186,000 Speed of Light Start here End here 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

3 Rick Graziani Wavelength Speed of the wave = Frequency x Wavelength Wavelength = Speed of the wave / Frequency feet = 982,080,000 feet / 90,000,000 All About Wavelength

4 Rick Graziani Speed of light = 186,000 miles/sec Length of rope 186,000 miles long 1 second Mile: 0, beginning of rope 0 seconds After 1/2 second After 1 second Mile: 186,000, end of rope 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. 0 second Speed of Light 1 second

5 Rick Graziani Speed of light = 186,000 miles/sec Length of rope 186,000 miles long Mile: 0, beginning of rope Mile: 186,000, end of rope 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). 1 second0 second Speed of Light – 1 Hz 186,000 miles

6 Rick Graziani Length of rope 186,000 miles long Mile: 0, beginning of rope Mile: 186,000, end of rope 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). 1 second0 second Speed of Light – 2 Hz 93,000 miles Speed of light = 186,000 miles/sec

7 Rick Graziani 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? Speed of Light – Let’s do inches 11,784,960,000 inches 6,000,000,000 inches

8 Rick Graziani 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. Speed of Light – Lets do inches 1 second0 second … billion Length of rope 186,000 miles long Mile: 0, beginning of rope Mile: 186,000, end of rope 1 inch Length of rope 11.8 billion inches long

9 Rick Graziani 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. Speed of Light – Lets do inches 1 second0 second … 12 1 billion Length of rope 186,000 miles long Mile: 0, beginning of rope Mile: 186,000, end of rope 11.8 inches Length of rope 11.8 billion inches long

10 Rick Graziani 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.

11 Rick Graziani 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. Size of a 2.4 GHz WLAN wave 1 second0 second … billion Length of rope 186,000 miles long Mile: 0, beginning of rope Mile: 186,000, end of rope 4.8 inches Length of rope 11.8 billion inches long

12 Rick Graziani 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. Size of a 5.8 GHz WLAN wave 1 second0 second … billion Length of rope 186,000 miles long Mile: 0, beginning of rope Mile: 186,000, end of rope 2 inches Length of rope 11.8 billion inches long

13 End of Size of a Wave Rick Graziani Cabrillo College


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