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#1
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![]() "Ian Jackson" wrote in message ... In message , gareth writes "Jim GM4DHJ ..." wrote in message ... "gareth" wrote in message ... Can they be used to plot the setting up of Xtal ladder filters, which would mean the ability to control the frequency sweep to as little as a few kHz? I ask because the Hameg speccy that I have, although good for harmonic checks, has a minimum sweep of 1 MHz. that should read Mc/s OM .... That depends on the age of the equipment! Condensers and Mc/s before 1960 Capacitors and MHz post 1960 The Germans were using MHz much earlier (almost for ever). The UK started in the latter 60s, and at first it was supposed to be only an electrical unit. With any sweep equipment, in addition to the sweep width you also need to know the sweep speed. The first is in MHz (or Mc/s), and the second is in MHz/s (or Mc/s/s). but hertz means NOTHING whereas c/s describes cycles per second ...much better ... |
#2
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"Jim GM4DHJ ..." wrote in message
... but hertz means NOTHING whereas c/s describes cycles per second ...much better ... Whereas Ampere means ions per second |
#3
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"gareth" wrote in news:n7nmq8$irn$1@dont-
email.me: "Jim GM4DHJ ..." wrote in message ... but hertz means NOTHING whereas c/s describes cycles per second ...much better ... Whereas Ampere means ions per second A meaningless comparison, since ions don't all carry the same amount of charge. |
#4
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"Brian Reay" wrote in message
... gareth wrote: "Jim GM4DHJ ..." wrote in message ... but hertz means NOTHING whereas c/s describes cycles per second ...much better ... Whereas Ampere means ions per second Charge (Coulombs) per second. One Amp is one Coulomb per second. You missed the point, for, in your argument, think for yourself as to what is a Coulomb, also named after a person. I chose ions specifically and not electrons because of the flow in the electrolyte of lead acid cells, and in the electrolyte of electroplating tanks, |
#5
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"Brian Reay" wrote in message
... gareth wrote: "Brian Reay" wrote in message ... gareth wrote: "Jim GM4DHJ ..." wrote in message ... but hertz means NOTHING whereas c/s describes cycles per second ...much better ... Whereas Ampere means ions per second Charge (Coulombs) per second. One Amp is one Coulomb per second. You missed the point, for, in your argument, think for yourself as to what is a Coulomb, also named after a person. I chose ions specifically and not electrons because of the flow in the electrolyte of lead acid cells, and in the electrolyte of electroplating tanks, Read my post again. You will note I did not mention electrons. The Amp is the flow of one Coulomb of charge, equivalent to 6.2 x 10^18 (or so) elemental charges. Feel free to check a basic physics text book, I appreciate not everyone knows the basics. Strange isn't it, people claim standards in schools are slipping but I know this is taught today, or at least was until I recently retired. Grow up Brian. Your attempt to stir things up in order to bandy about insults fails again. You have failed again because the discussion was that things should not be named after people and you slipped on a banana skin with your own mention of the Coulomb. |
#6
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"gareth" wrote in message
... "Brian Reay" wrote in message ... gareth wrote: "Brian Reay" wrote in message ... gareth wrote: "Jim GM4DHJ ..." wrote in message ... but hertz means NOTHING whereas c/s describes cycles per second ...much better ... Whereas Ampere means ions per second Charge (Coulombs) per second. One Amp is one Coulomb per second. You missed the point, for, in your argument, think for yourself as to what is a Coulomb, also named after a person. I chose ions specifically and not electrons because of the flow in the electrolyte of lead acid cells, and in the electrolyte of electroplating tanks, Read my post again. You will note I did not mention electrons. The Amp is the flow of one Coulomb of charge, equivalent to 6.2 x 10^18 (or so) elemental charges. Feel free to check a basic physics text book, I appreciate not everyone knows the basics. Strange isn't it, people claim standards in schools are slipping but I know this is taught today, or at least was until I recently retired. Grow up Brian. Your attempt to stir things up in order to bandy about insults fails again. You have failed again because the discussion was that things should not be named after people and you slipped on a banana skin with your own mention of the Coulomb. PS 10^18? ISTR 10^19 |
#7
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"Brian Reay" wrote in message
... Or dear, one of your typical responses when corrected. No wonder you have failed to improve your knowledge if you always react this way. Grow up, Brian. |
#8
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On 20/01/2016 10:43, Brian Reay wrote:
gareth wrote: "Jim GM4DHJ ..." wrote but hertz means NOTHING whereas c/s describes cycles per second ...much better ... Whereas Ampere means ions per second Charge (Coulombs) per second. One Amp is one Coulomb per second. Since the Ampere and the second are fundamental units in the SI system, and the Coulomb is a unit derived from them and therefore is not a fundamental unit, then one should say that 1 Coulomb = 1 Ampere-second Read up on 'SI fundamental units'. HTH -- Spike "They thought that because they had power, they had wisdom" - with apologies to Stephen Vincent Benet |
#9
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"Spike" wrote in message
... On 20/01/2016 10:43, Brian Reay wrote: gareth wrote: "Jim GM4DHJ ..." wrote but hertz means NOTHING whereas c/s describes cycles per second ...much better ... Whereas Ampere means ions per second Charge (Coulombs) per second. One Amp is one Coulomb per second. Since the Ampere and the second are fundamental units in the SI system, and the Coulomb is a unit derived from them and therefore is not a fundamental unit, then one should say that 1 Coulomb = 1 Ampere-second Read up on 'SI fundamental units'. (The SI is but one in a number of arbitrary systems of units) ISTR that the SI system is based upon things that can actually be measured experimentally and not upon some theoretical bases that cannot be measured. But how does one fashion a pair of infinitely long parallel wires in order to be able to measure an ampere has yet to be revealed :-) |
#10
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"Brian Reay" wrote in message
... You seem to be confusing two methods. One based on charge per second another based on force between conductors. That is the danger of trying to impress by using Google. Grow up, Brian. |
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