I'm no scientist -

[tim]

- so was fascinated by this one.

When I stir our granular fertiliser, by hand, to dissolve it, I've always thought what a wimp I was in finding the water so cold that I have to take breaks. But when I run the rainwater over my hand, it feels like blood-heat.

Spoke with Vitax (who are endlessly helpful) about slow dissolving.
The tech chap there said that this can be due to the concentrate releasing energy & taking the temperature almost to freezing point, thus delaying the process.

So? So I'm not a wimp!! = Tim

[tim]

[Gardengirl]

Fascinating - we learn something new everyday Tim :D :)

[Spurdie]

Hmm, a fellow philosopher! I'm glad I'm not the only one who thinks about everything all the time! Have you noticed that when the garden sprinkler is on (a very rare occasion in our garden!!!) when you run past it and get wet, the water is freezing cold, and yet it is very pleasant to go for a walk in the rain and get soaked, WITHOUT getting cold! Why is that Tim?

[derbex]

yet it is very pleasant to go for a walk in the rain and get soaked, WITHOUT getting cold! Why is that?

Because you're scottish ;D

Being an Essex wimp I hate getting soaked no matter how warm the rain.





So why did I take up sailing & diving then ::)

Jeremy

[tim]

Spurdie =
1. A walk in the rain is self-imposed. A sprinkler is a shock.
2. You are in the wrong clothes?
3. Water expanding out of a jet, cools. Hence blowing on your food. Disgusting habit! = Tim

[Wicker]

Tut, tut, Tim - some of us don't blow on our food we just exhale gently on it!! Anyway don't think anyone could ever think of you as a wimp!

[Hugh_Jones]

tim, if you keep on stirring it with your hands you`ll get arthritic fingers, then .........

YO`U/*WIL@;ENDUP";HAVIN+G(TO%TYPE?>LIKE[#THIS"

[eileen]

Glad to have you back amongst us Hugh - how you been?

Eileen.

[TrailRat]

When you walk through a sprinkler and out the spray the water starts to evaporate, like sweat, thus drawing heat from your body. With rain the water drops are denser taking longer to evaporate and causing a layer on clothing and skin that acts as a heat barrier keeping you warm. Also rain is constant if you walk in it, where as running through a sprinkler isn't. I hope I make sense. Got told that information when I went survival training, for a long expedition i was doing on the bike.

TrailRat

[tim]

Yes. And, as said, water forced through a jet is cooled significantly? = Tim

[Spurdie]

Hello all

What a clever lot you are!

Tim, I must be an eternal optimist, as I often get a soaking while out on a walk, and yet I still go out without a jacket! Either that or I am too stupid to remember to take one with me!  ::)

OK Trailrat, what is your scientific explanation as to why fried tomatoes are always hotter than fried sausages? Do tomatoes store heat more efficiently than the humble sausage? Even if the tomatoes are added frying pan much later than the sausages, the tomatoes are still far hotter than the sausages ... But as Tim thinks blowing on food is a bad habit, I shall have to invest in a mini fan for the edge of my plate!  ;)

[TrailRat]

Quite simple really. Tomatoes contain more moisture which retains heat, unlike the banger which is more packed with less water. At least thats my theory.

TrailRat

[Hugh_Jones]

Almost right, but it`s not a matter of retention of heat, but of absorbing it.  As you rightly say the tomatoes contain far more water and consequently have far less density than the sausages. The greater the density, the greater the amount of heat required to attain a given temperature, or, putting it differently, if you cook them both in the same pan on the same heat source the tomatoes will be cooked through long before the heat has properly penetrated the middle of the sausage.

However, if both tomatoes and sausages were brought to exactly the same temperature, it would in fact be the tomatoes, being the less dense, which would cool first.

[Spurdie]

Fancy getting all this amazing info on a gardening website! I'll know where to come when my daughter gets stuck with her homework!  ;D  

[TrailRat]

Anytime spurdie. I was a strange kid who loved homework.

TrailRat