Archive for April, 2011

What is the purpose of a lightning rod attached to the roofline of a building?

Question by fmrebaf@sbcglobal.net: What is the purpose of a lightning rod attached to the roofline of a building?
Ben Franklin and his devotees have been selling lightning rods for decades. Please tell me as to how a one inch stranded alluminum cable can safely conduct millions of amperes of current [in a lightning bolt] to a ground rod connected to a lightning rod fastened to the ridgeline of a standard frame dwelling?
I maintain that it cannot!
I maintain that the lightning rod is designed to
{ disperse, dispense, discharge, emanate, release, drain-off } static electrical charges to the overhead clouds, thereby equalizing the potential difference between storm clouds and the surface of the earth in a localized area. When this balance exists, there is much less chance of a discharge in both directions between earth and clouds.
If you disagree, please state your case in this matter. I’ll listen:

Best answer:

Answer by Doc8
Prevents the lightening from setting the building on fire. We ground a lot of things such as antennas. It is a common practice.

Add your own answer in the comments!

Cool Weather images

A few nice weather images I found:

Crazy Houston Weather
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Image by .imelda

Crazy Houston Weather
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Image by .imelda

Cold Front Blues

Cold Front Blues

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Weathered Metal Shed

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Weathered Metal Shed
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Image by dok1

Weather and Climate Meet on NPP Satellite
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Image by NASA Earth Observatory

weather report #01
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Image by yuki*

Cool Weather Radar images

Some cool weather radar images:

9thnovhallsa
weather radar

Image by australian radar anomalies

9thnovtasmaniaad
weather radar

Image by australian radar anomalies

9thnovsydney
weather radar

Image by australian radar anomalies

an oceanographic research vessel comes across a volcano under the sea. The top of the volcano is 370ft below?

oceanographic
by Sebyn

Question by Cassandra M: an oceanographic research vessel comes across a volcano under the sea. The top of the volcano is 370ft below?
the surface and the sea floor is -8,500ft. what is the height of the volcano?

Best answer:

Answer by aladdinwa
Well, if the surface of the sea is 8,500 feet above the floor of the ocean; and the volcano is 370 feet short of breaking the surface of the sea; then, obviously, the height of the volcano is 370 feet less than the depth of the sea at that point.

Are you smart enough to do that math?
.

Add your own answer in the comments!

Lastest Weather Satellite News

Cool Weather Almanac images

Check out these weather almanac images:

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The Haystack Syndrome: Sifting Information Out of the Data Ocean by Eliyahu M. G

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VINTAGE (1984) PRESS PHOTOS: OCEAN DATA "ON-LINE SOFTWARE INFORMATION" (CAPTIONS
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Missionary To The World And Marriage Celebrant In Australia

Missionary To The World And Marriage Celebrant In Australia
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Earthquake Sound SZ-10 Competion 10' 1500 Watt Car Subwoofer

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Earthquake Power 300TX Car Amp
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