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
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| Subject: | Re: Easy - too easy |
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" <VE3LVO@rac.ca> 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
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| Subject: | Re: Easy - too easy |
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
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| Subject: | Re: 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
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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
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| Subject: | 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
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| Subject: | Re: 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
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| Subject: | Re: Easy - too easy |
It's the way I've always done it.
JimC
----- Original Message -----
From: "Noel Loveys" <noelloveys@yahoo.ca>
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
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| Subject: | Re: 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" <cubflyr@comcast.net>
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
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(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" <noelloveys@yahoo.ca>
> To: <engines-list@matronics.com>
> Sent: Sunday, June 24, 2007 12:35 PM
> Subject: RE: Engines-List: Easy - too easy
>
>
> <noelloveys@yahoo.ca>
> >
> > The first time I've seen it expressed that way
> >
> > Noel
> >
>
>
>
>
>
>
Message 10
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| Subject: | 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" <cubflyr@comcast.net>
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
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Now try it backwards... to get back to Cent.
Best... Steve
----Original Message Follows----
From: "Noel Loveys" <noelloveys@yahoo.ca>
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" <noelloveys@yahoo.ca>
> To: <engines-list@matronics.com>
> Sent: Sunday, June 24, 2007 12:35 PM
> Subject: RE: Engines-List: Easy - too easy
>
>
> <noelloveys@yahoo.ca>
> >
> > The first time I've seen it expressed that way
> >
> > Noel
> >
>
>
>
>
>
>
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Message 12
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| Subject: | Re: 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 <s_korney@hotmail.com> wrote:
>
>
> Now try it backwards... to get back to Cent.
>
>
> Best... Steve
>
>
> ----Original Message Follows----
> From: "Noel Loveys" <noelloveys@yahoo.ca>
> To: <engines-list@matronics.com>
> 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" <noelloveys@yahoo.ca>
> > To: <engines-list@matronics.com>
> > Sent: Sunday, June 24, 2007 12:35 PM
> > Subject: RE: Engines-List: Easy - too easy
> >
> >
> > <noelloveys@yahoo.ca>
> > >
> > > 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
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>
Message 13
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| Subject: | Re: 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" <noelloveys@yahoo.ca>
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
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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" <noelloveys@yahoo.ca>
Sent: Sunday, June 24, 2007 3:59 PM
Subject: RE: Engines-List: Easy - too easy
> --> <noelloveys@yahoo.ca>
>
> (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
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| Subject: | Re: 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
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| Subject: | Re: 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 <jrccea@bellsouth.net> wrote:
> <jrccea@bellsouth.net>
>
> 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" <noelloveys@yahoo.ca>
> To: <engines-list@matronics.com>
> Sent: Sunday, June 24, 2007 3:59 PM
> Subject: RE: Engines-List: Easy - too easy
>
>
> <noelloveys@yahoo.ca>
> >
> > (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!
>
>
>
>
>
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