---------------------------------------------------------- Engines-List Digest Archive --- Total Messages Posted Sun 06/24/07: 16 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:21 AM - Re: Easy - too easy (Larry Mac Donald) 2. 08:19 AM - Re: Easy - too easy (Fergus Kyle) 3. 10:25 AM - Re: Easy - too easy (jrc) 4. 11:36 AM - Re: Easy - too easy (Noel Loveys) 5. 01:10 PM - Centigrade to Fahrenheit (Michael) 6. 01:50 PM - Re: Easy - too easy (Konrad L. Werner) 7. 02:11 PM - Re: Easy - too easy (jrc) 8. 02:16 PM - Re: Centigrade to Fahrenheit (jrc) 9. 03:00 PM - Re: Easy - too easy (Noel Loveys) 10. 04:35 PM - Re: Centigrade to Fahrenheit (Mike) 11. 05:38 PM - Re: Easy - too easy (steve korney) 12. 06:06 PM - Re: Easy - too easy (Kelly McMullen) 13. 06:22 PM - Re: Easy - too easy (jrc) 14. 06:39 PM - Re: Easy - too easy () 15. 07:05 PM - Re: Easy - too easy (ElleryWeld@aol.com) 16. 07:31 PM - Re: Easy - too easy (Dave Nellis) ________________________________ Message 1 _____________________________________ Time: 07:21:52 AM PST US Subject: Re: Engines-List: Easy - too easy From: Larry Mac Donald Hi Folks, Guess I missed most of this thread. Are we trying to mentally convert Fahrenheit to Centigrade ? Larry Mac Donald lm4@juno.com Rochester N.Y. Do not archive On Sat, 23 Jun 2007 22:28:28 -0400 "Fergus Kyle" writes: > > My old math teacher said " When it's easy, be wise, do it twice." > > Example: > 30c x 2 = 60, > minus 10% (60-6=56), > 56 + 32 = 86F Do it in your head easy Second time, I don't think so. Cheers, Ferg ________________________________ Message 2 _____________________________________ Time: 08:19:14 AM PST US Subject: Engines-List: Re: Easy - too easy From: "Fergus Kyle" Right, Larry, Basically, the topic was an easy way to convert. However you can see the arithmatic fialed and although the answer was correct, the math wasn't. I was just noting that the easier the arithmatic, the greater the need to do it twice..... Cheers, Ferg Read this topic online here: http://forums.matronics.com/viewtopic.php?p=120344#120344 ________________________________ Message 3 _____________________________________ Time: 10:25:36 AM PST US From: "jrc" Subject: Re: Engines-List: Easy - too easy I'm afraid I miss the point. This is indeed the easiest way to mentally convert from C to F, and is so quick that you can do it as fast as you say it. JimC ----- Original Message ----- Subject: Re: Engines-List: Easy - too easy > > Hi Folks, > Guess I missed most of this thread. Are we trying to mentally > convert Fahrenheit to Centigrade ? > >> My old math teacher said " When it's easy, be wise, do it twice." >> >> Example: >> 30c x 2 = 60, >> minus 10% (60-6=56), >> 56 + 32 = 86F > Do it in your head easy > Second time, I don't think so. > Cheers, Ferg ________________________________ Message 4 _____________________________________ Time: 11:36:08 AM PST US From: "Noel Loveys" Subject: RE: Engines-List: Easy - too easy The first time I've seen it expressed that way Noel VO1 PL > -----Original Message----- > From: owner-engines-list-server@matronics.com > [mailto:owner-engines-list-server@matronics.com] On Behalf Of > Fergus Kyle > Sent: Saturday, June 23, 2007 11:58 PM > To: engines > Subject: Engines-List: Easy - too easy > > > > My old math teacher said " When it's easy, be wise, do it twice." > > Example: > 30c x 2 = 60, > minus 10% (60-6=56), > 56 + 32 = 86F > > Do it in your head easy > > Second time, I don't think so. > Cheers, Ferg > > > > > > > ________________________________ Message 5 _____________________________________ Time: 01:10:34 PM PST US From: "Michael" Subject: Engines-List: Centigrade to Fahrenheit I was taught, eh, by two Canadians, eh to double the Centigrade, eh, and add it to 32 to get Fahrenheit, eh. Easy, eh? Not exact but close enough, eh? Michael, eh What two Canadians, eh? The Mackenzie Brothers, of course, eh? ________________________________ Message 6 _____________________________________ Time: 01:50:12 PM PST US From: "Konrad L. Werner" Subject: Re: Engines-List: Easy - too easy 60 - 6 *IS NOT* 56, but rather equals 54, no??? And 56 + 32 = 88, and not 86. But it looks like two wrongs can make things right after all..... > Example: > 30c x 2 = 60, > minus 10% (60-6=56), > 56 + 32 = 86F > > Do it in your head easy > > Second time, I don't think so. > Cheers, Ferg ________________________________ Message 7 _____________________________________ Time: 02:11:21 PM PST US From: "jrc" Subject: Re: Engines-List: Easy - too easy It's the way I've always done it. JimC ----- Original Message ----- From: "Noel Loveys" Sent: Sunday, June 24, 2007 12:35 PM Subject: RE: Engines-List: Easy - too easy > > The first time I've seen it expressed that way > > Noel > ________________________________ Message 8 _____________________________________ Time: 02:16:16 PM PST US From: "jrc" Subject: Re: Engines-List: Centigrade to Fahrenheit No. It can be pretty far off. For example, for 100 C it would give 232 F and would be too high by 20 F, giving 232 instead of 212. The correct answer would be 200-20+32 = 212. It takes perhaps one second longer to do the exact conversion. JimC ----- Original Message ----- From: "Michael" Sent: Sunday, June 24, 2007 2:06 PM Subject: Engines-List: Centigrade to Fahrenheit > > I was taught, eh, by two Canadians, eh to double the Centigrade, eh, and > add > it to 32 to get Fahrenheit, eh. Easy, eh? Not exact but close enough, eh? > > Michael, ________________________________ Message 9 _____________________________________ Time: 03:00:27 PM PST US From: "Noel Loveys" Subject: RE: Engines-List: Easy - too easy (9/5C) +32=F (F-32)(5/9)=C That's the way I was shown... A bit bulky for doing without paper or a calculator. Yours is definitely easier. I tried it on -40C =-40F, 0C=32F, 20C=68F, 100C=212F all worked correctly. Noel > -----Original Message----- > From: owner-engines-list-server@matronics.com > [mailto:owner-engines-list-server@matronics.com] On Behalf Of jrc > Sent: Sunday, June 24, 2007 6:41 PM > To: engines-list@matronics.com > Subject: Re: Engines-List: Easy - too easy > > > > It's the way I've always done it. > JimC > ----- Original Message ----- > From: "Noel Loveys" > To: > Sent: Sunday, June 24, 2007 12:35 PM > Subject: RE: Engines-List: Easy - too easy > > > > > > > The first time I've seen it expressed that way > > > > Noel > > > > > > > > ________________________________ Message 10 ____________________________________ Time: 04:35:37 PM PST US From: "Mike" Subject: RE: Engines-List: Centigrade to Fahrenheit Just to add what Jim left out, the -20 came from the 100+100 0 (-10%=-20) or 180+32=212. Another example: 0+0=0, 0-10%(0)=0, +32, and 15+15=30-10%(3)=27+32=59. So the formula is: ((Deg.C*2)-10%)+32=Deg.F Mike -----Original Message----- From: owner-engines-list-server@matronics.com [mailto:owner-engines-list-server@matronics.com] On Behalf Of jrc Sent: Sunday, June 24, 2007 2:15 PM Subject: Re: Engines-List: Centigrade to Fahrenheit No. It can be pretty far off. For example, for 100 C it would give 232 F and would be too high by 20 F, giving 232 instead of 212. The correct answer would be 200-20+32 = 212. It takes perhaps one second longer to do the exact conversion. JimC ----- Original Message ----- From: "Michael" Sent: Sunday, June 24, 2007 2:06 PM Subject: Engines-List: Centigrade to Fahrenheit > > I was taught, eh, by two Canadians, eh to double the Centigrade, eh, and > add > it to 32 to get Fahrenheit, eh. Easy, eh? Not exact but close enough, eh? > > Michael, -- 3:15 PM -- 3:15 PM ________________________________ Message 11 ____________________________________ Time: 05:38:17 PM PST US From: "steve korney" Subject: RE: Engines-List: Easy - too easy Now try it backwards... to get back to Cent. Best... Steve ----Original Message Follows---- From: "Noel Loveys" Subject: RE: Engines-List: Easy - too easy (9/5C) +32=F (F-32)(5/9)=C That's the way I was shown... A bit bulky for doing without paper or a calculator. Yours is definitely easier. I tried it on -40C =-40F, 0C=32F, 20C=68F, 100C=212F all worked correctly. Noel > -----Original Message----- > From: owner-engines-list-server@matronics.com > [mailto:owner-engines-list-server@matronics.com] On Behalf Of jrc > Sent: Sunday, June 24, 2007 6:41 PM > To: engines-list@matronics.com > Subject: Re: Engines-List: Easy - too easy > > > > It's the way I've always done it. > JimC > ----- Original Message ----- > From: "Noel Loveys" > To: > Sent: Sunday, June 24, 2007 12:35 PM > Subject: RE: Engines-List: Easy - too easy > > > > > > > The first time I've seen it expressed that way > > > > Noel > > > > > > > > _________________________________________________________________ Like puzzles? Play free games & earn great prizes. Play Clink now. http://club.live.com/clink.aspx?icid=clink_hotmailtextlink2 ________________________________ Message 12 ____________________________________ Time: 06:06:50 PM PST US From: "Kelly McMullen" Subject: Re: Engines-List: Easy - too easy One example will show it only gets you within 10%. -40F=-40C -40-32/2=-36 does not equal -40. On 6/24/07, steve korney wrote: > > > Now try it backwards... to get back to Cent. > > > Best... Steve > > > ----Original Message Follows---- > From: "Noel Loveys" > To: > Subject: RE: Engines-List: Easy - too easy > Date: Sun, 24 Jun 2007 19:29:33 -0230 > > > (9/5C) +32=F > > (F-32)(5/9)=C > > That's the way I was shown... A bit bulky for doing without paper or a > calculator. Yours is definitely easier. I tried it on -40C =-40F, 0C=32F, > 20C=68F, 100C=212F all worked correctly. > > Noel > > > -----Original Message----- > > From: owner-engines-list-server@matronics.com > > [mailto:owner-engines-list-server@matronics.com] On Behalf Of jrc > > Sent: Sunday, June 24, 2007 6:41 PM > > To: engines-list@matronics.com > > Subject: Re: Engines-List: Easy - too easy > > > > > > > > It's the way I've always done it. > > JimC > > ----- Original Message ----- > > From: "Noel Loveys" > > To: > > Sent: Sunday, June 24, 2007 12:35 PM > > Subject: RE: Engines-List: Easy - too easy > > > > > > > > > > > > The first time I've seen it expressed that way > > > > > > Noel > > > > > > > > > > > > > > > > > > _________________________________________________________________ > Like puzzles? Play free games & earn great prizes. Play Clink now. > http://club.live.com/clink.aspx?icid=clink_hotmailtextlink2 > > ________________________________ Message 13 ____________________________________ Time: 06:22:41 PM PST US From: "jrc" Subject: Re: Engines-List: Easy - too easy That's because it's exactly the same equation, just configured differently. 9/5X is the same as 2X-2X/10. Both equal 1.8X JimC ----- Original Message ----- From: "Noel Loveys" Sent: Sunday, June 24, 2007 3:59 PM Subject: RE: Engines-List: Easy - too easy > > (9/5C) +32=F > > (F-32)(5/9)=C > > That's the way I was shown... A bit bulky for doing without paper or a > calculator. Yours is definitely easier. I tried it on -40C =-40F, > 0C=32F, > 20C=68F, 100C=212F all worked correctly. > > Noel ________________________________ Message 14 ____________________________________ Time: 06:39:50 PM PST US Subject: RE: Engines-List: Easy - too easy From: Rule of thumb is easiest. Double it and add 30. Normally accurate within 1-2 degrees. Opposite for converting back. -----Original Message----- From: owner-engines-list-server@matronics.com [mailto:owner-engines-list-server@matronics.com] On Behalf Of jrc Sent: Sunday, June 24, 2007 9:22 PM Subject: Re: Engines-List: Easy - too easy That's because it's exactly the same equation, just configured differently. 9/5X is the same as 2X-2X/10. Both equal 1.8X JimC ----- Original Message ----- From: "Noel Loveys" Sent: Sunday, June 24, 2007 3:59 PM Subject: RE: Engines-List: Easy - too easy > --> > > (9/5C) +32=F > > (F-32)(5/9)=C > > That's the way I was shown... A bit bulky for doing without paper or a > calculator. Yours is definitely easier. I tried it on -40C =-40F, > 0C=32F, 20C=68F, 100C=212F all worked correctly. > > Noel ________________________________ Message 15 ____________________________________ Time: 07:05:35 PM PST US From: ElleryWeld@aol.com Subject: Re: Engines-List: Easy - too easy I would think the easiest way to convert in either direction would be to use your flight computer it works for me Ellery in MAINE do not archive ************************************** See what's free at http://www.aol.com. ________________________________ Message 16 ____________________________________ Time: 07:31:06 PM PST US From: Dave Nellis Subject: Re: Engines-List: Easy - too easy Should read 2X-(2X/10)+ 32=F. Math in brackets is done first. Hey, I do remember something from high school. :D Dave --- jrc wrote: > > > That's because it's exactly the same equation, just > configured differently. > 9/5X is the same as 2X-2X/10. Both equal 1.8X > JimC > > ----- Original Message ----- > From: "Noel Loveys" > To: > Sent: Sunday, June 24, 2007 3:59 PM > Subject: RE: Engines-List: Easy - too easy > > > > > > > (9/5C) +32=F > > > > (F-32)(5/9)=C > > > > That's the way I was shown... A bit bulky for > doing without paper or a > > calculator. Yours is definitely easier. I tried > it on -40C =-40F, > > 0C=32F, > > 20C=68F, 100C=212F all worked correctly. > > > > Noel > > > > > browse > Subscriptions page, > FAQ, > http://www.matronics.com/Navigator?Engines-List > > Web Forums! > > > > > Moody friends. Drama queens. Your life? Nope! - their life, your story. Play Sims Stories at Yahoo! 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