The Naked Scientists

The Naked Scientists Forum

Author Topic: When It Rains, Will I Be Drier If I Run Or Walk ?  (Read 7472 times)

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
Dearest Sweety Pie Lufflies Of Inclement Precipitation !

"Raindrops keep falling on my head" wrote Hal David and Burt Bacharach.

As a sheepy, I luff the rain, I really do, but at the same time having a sponge as a coat can make Sheepy a water laden wooly ball !...just right for squeezing and being ewesed to wash a giants norty bits !

Look, here's some rain :



Rain is my all time favourite watery stuff that falls from clouds !

If it's raining, be it a torrential downpour or just a mild spit, does it make any difference as to my dryness whether I run or walk ?

As a firm believer in emprical study I took my treadmill outside when it was raining and walked for fiteen minutes and then ran for fiftenn minutes....I could not see any difference !  ::) ::)

whajafink ?


ta


Hugs and shmishes

mwah mwah mwah !!



neil
I'm wearing a T-shirt, ewe cvan hose me down !
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx


 

Offline DrN

  • Hero Member
  • *****
  • Posts: 815
    • View Profile
When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #1 on: 18/01/2009 21:58:10 »
People have done scientific studies on this. I can't remember who, when, where (or why), and I'm not going to search for them, but they concluded that it doesn't make any difference how wet you get whether you run or walk (or anything else for that matter) when you're out in the rain. What matters in teh length of time you are out in it.

But to me that means you'll be drier if you run, unless you purposely take the long way round when you run, because you'll get there quicker!
 

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • Posts: 20602
  • Thanked: 8 times
    • View Profile
When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #2 on: 18/01/2009 22:04:59 »
Awesome !!

THANK EWE Fishytails

I was kind of thinking that perhaps the faster I ran then the quicker the rain would hit me but then I was also stuck with that whilst I am running it would also serve to dry me quicker due to the passing breeze that I would make !

Oh my poor sheepy head !

So, thank ewe !!
 

lyner

  • Guest
When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #3 on: 18/01/2009 22:24:05 »
Dear Miss(?) Wet T Shirt

If the rain is vertical then you will only get a wet head.  As soon as you start to move you will get your (ample, I'm sure) chest wet. How wet you get will depend on several factors.
Assume you run at speed s and the rain falls at speed V with W g per unit area.
The rate of wetting your chest (it's vertical or I can't do the sum) will be proportional to s/V.
If you have to go distance x, it will take time x/s.
That means your chest wetting will be proportional to
s/V times x/s which = x/V
This doesn't depend on s (how fast you run).
Your head will get less wet the sooner you get there so you should run as fast as u can.
« Last Edit: 28/01/2009 08:02:43 by sophiecentaur »
 

Offline Karen W.

  • Moderator
  • Naked Science Forum GOD!
  • *****
  • Posts: 31653
  • Thanked: 5 times
  • "come fly with me"
    • View Profile
When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #4 on: 18/01/2009 22:36:51 »
Seems if our own sweet Sheepy was runing that it would mean less exposure time... I woulagree tha the angle sheepy is rained upon...ie the wind and tajctory of the rain would be a bearing on this also the force o with the rain falls the size of the drops etc..... some drops hold a lot more water then a lighter rain ....etc..but thatsa what I would have expected anyway..
 

lyner

  • Guest
When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #5 on: 18/01/2009 23:28:49 »
There you go, getting all practical on me. I do a nice bit of theory and it's irrelevant.
I still think running is the best option - but don't slip on the wet pavement (=sidewalk) or you'll wet more than your head and chest.
 

Offline DrN

  • Hero Member
  • *****
  • Posts: 815
    • View Profile
When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #6 on: 28/01/2009 00:06:16 »
Especially if you land in a puddle!
 

Offline Don_1

  • Neilep Level Member
  • ******
  • Posts: 6890
  • Thanked: 7 times
  • A stupid comment for every occasion.
    • View Profile
    • Knight Light Haulage
When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #7 on: 28/01/2009 08:55:56 »
I doubt it would make any difference. If you walk, you will collide with fewer raindrops over a longer period. If you run, you will collide with more raindrops over a shorter period.

There are far better ways of avoiding getting wet when it rains:

1) Don't go out when it is p***ing down with rain.
2) If you must nip down the shop for milk for your tea, take an umbrella.
3) (Better alternative to (2) above) send someone else on your behalf.
 

lyner

  • Guest
When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #8 on: 28/01/2009 21:33:02 »
Quote
I doubt it would make any difference. If you walk, you will collide with fewer raindrops over a longer period.
The sums tell you it is so. See an earlier post. The longer raindrops are raining on your actual head, the wetter you will get but the upright bits get the same amount of wet however fast you are going.
 

paul.fr

  • Guest
When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #9 on: 29/01/2009 09:52:30 »
...The longer raindrops are raining on your actual head...

As opposed to?
 

lyner

  • Guest
When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #10 on: 29/01/2009 16:29:29 »
As opposed to the upright bits. [^]
 

The Naked Scientists Forum

When It Rains, Will I Be Drier If I Run Or Walk ?
« Reply #10 on: 29/01/2009 16:29:29 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums