[Antennas] Re: B&W window antenna

2002年4月04日 09:20:12 -0600

>From: "Merv Stump" <[email protected]>
>To: "Jan C. Robbins" <[email protected]>, "Dan Richardson" <[email protected]>
>CC: <[email protected]>
>Subject: Re: [Antennas] Re: B&W window antenna
>Date: Wed, 3 Apr 2002 22:25:37 -0500
>>When I was a teenager my Dad (W4BVA) drew two pictures for me. The first
>was a water pump with a 2 inch output, coupled to a 2 inch hose, coupled to
>a 2 inch irrigation pipe. The second picture was identical except that the
>irrigation pipe was only 1 inch. The he asked me 3 questions: 1. If both
>pumps are pumping 10 gallons per minute, which one is putting the most 
>water
>on the ground?

Lets see, it appears similar to series circuit, so the amount of water 
delivered would be......10 gallons per minute...however on the system with 
the reduced irrigation hose diameter, the pressure would be higher.
Since the system is a closed system....10 gal per minute would exist 
throughout the system....wouldn't it???
2. Which pump is working the hardest?
It would appear that the pump with the reduced irrigation pipe is working 
the hardest....as it is delivering it 10 gpm through a higher "resistance"..
 3. If each hose has a small hole in it, which one is leaking more water?
It would again appear that the system with the reduced hose size would have 
the most leaking water through that small hole because of the increased 
pressure due to restricted hose..
How did I do????
I think he would have
>agreed with you on all points Jan.
>>Regards, Merv W2OE
>>>- - -
>>Your moderator for this list is:
>Larry Wilson KE1HZ [email protected]
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