- Dave,

I found that when I taught High School students the way you calculate

the temp was a little more difficult for my students. The formula

varies depending on whether you are converting from C to F or vise

versa. My students would forget when to add or subtract 32. With the

equation I use, they only have to remember to multiply by 9/5 when

going to F and 5/9 when going to C. I learned this formula when I was

taking HS Chemistry and found it helped me as well. Of course, I've

met other teachers in my career who told me the only way to to this

is the original formula, so perhaps I rebelled against conformity,

such as using a hammock rather than camping on the ground!

Jeff

On Feb 10, 2008, at 9:42 AM, Dave Womble wrote:

> Jeff,

>

> I got a chuckle out of your equation. At first glance I said "What

> the heck is that" and then I went through a few examples and it gives

> the right answers. Then I reduced your equation and got the old

> familiar standby that I am use to seeing, F = (9/5 * C) + 32. That

> form is easily derived from the freezing point and boiling point of

> water, 32F, 0C and 212F, 100C, respectively, and is the natural way to

> express it. My curiosity has the best of me... why was that equation

> rearranged to come up with a more complex form, F = (9/5 * (C + 40)) -

> 40, isn't that doing it the hard way?

>

> Dave

>

> --- In hammockcamping@yahoogroups.com, Jeff Palmer <japalmer@...>

> wrote:

> >

> > Not quite correct. To convert from F to C you need to:

> >

> > add 40 to the temperature

> > multiply that number by 9

> > divide the result by 5

> > finally, subtract 40 from the result.

> >

> > example:

> >

> > 20 degrees C

> >

> > 20 + 40 = 60

> > 60 X 9 = 540

> > 540/5 = 108

> > 108 - 40 = 68

> >

> > to convert from F to C, do the same steps, except multiply by 5 and

> > divide by 9

> >

> > 68 + 40 = 108

> > 108 * 5 = 540

> > 540/9 = 60

> > 60 - 40 = 20

> >

> > Memorize the following and you can usually guess the approximate

> > temperature.

> >

> > -40 degrees C = -40 degrees F

> > 0 degrees C is freezing - 32 F

> > 10 degrees C = 50 F

> > 20 degrees C = 68 F

> > 37 degrees C = body temp 98.6 f

> > 100 degrees C = boiling 212 F

> >

> > Jeff

> >

> > PS I was a science teacher until I retired.

> >

>

>

>

[Non-text portions of this message have been removed] - Since the weather usually comes here from the west/ south & north 'Lake Effect' snow doesn't happen here as much as it does to Northern Indiana, Michigan State and points East of Lake Michigan. This is because there aren't major bodies of water to the west to feed the snow. The most apparent and often 'Lake Effect' is during the summer as it is 'cooler by the lake' (up to 1mi inland) and in the winter it is warmer by the lake (~5-10 degrees).

still no overnight camping on the lakefront or in anywhere I know of in the metro area (25-35 mile radius from downtown) though. But there are lots of out of the way forested areas where you cant be seen.

weight 100grams (g) = ~3.5 ounces 1/2 an ounce short of a 1/4 pound (a nice sandwich)

Liquid 1 cup / 8oz = about 1/4 liter (L) 250milliliter (ml) actual

distance 1Km = .6 mi This also applies to MPH vs. KPH

10Km = 6 mi

100Km = 60 mi

Sapere Aude,

Arye P. Rubenstein

----- Original Message ----

From: C C Wayah <ccwayah@...>

To: hammockcamping@yahoogroups.com

Sent: Wednesday, February 13, 2008 9:56:32 PM

Subject: Re: [Hammock Camping] Which hammock and bag for cold and warm weather?

Absolute Zero....

WISE DECISION I'm sure you would be missed !>Thank you!

While Chicago does have a breeze (most notable in the near north / downtown

area near the river), the moniker the "Windy City" comes from the long

winded politicians past and current.>I was also thinking of the words Lake Effect! Double applications seams to

MS Why

>be the operative with hikers.

[Non-text portions of this message have been removed]