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Old Jul 9th 2019, 06:27 PM   #1
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Talking Raining, an ordinary topic

When it was raining while I forgot bringing an umbrella with me, I got wet. I often saw that some guys also without an umbrella resorted to a simple method: run...Did they really meet fewer rain drops?
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Old Jul 9th 2019, 07:08 PM   #2
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Originally Posted by neila9876 View Post
When it was raining while I forgot bringing an umbrella with me, I got wet. I often saw that some guys also without an umbrella resorted to a simple method: run...Did they really meet fewer rain drops?
As it happens I had a few spare moments once upon a time to figure this out.
1) As you run you are effectively making a larger area for the rain to fall in and on you. So faster speeds actually increase the number of drops you are encountering.

2) On the other hand you are moving faster by running and won't be in the rain as long. There will be a minimum speed (I never bothered to calculate it) where you break even, then anything faster will completely counter-act #1.

So bring the umbrella or be prepared to haul *ss!

-Dan
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Old Jul 10th 2019, 02:55 AM   #3
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Apparently, running is best, unless there is a strong tailwind:

https://www108.lamp.le.ac.uk/ojs1/in...File/2234/2138

It sounds a bit like something that would be nominated for an ignobel prize!
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Old Jul 10th 2019, 04:50 AM   #4
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haha...
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Last edited by neila9876; Jul 11th 2019 at 12:09 AM.
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Old Jul 11th 2019, 01:06 AM   #5
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In actual daily case, when it rains, guys without an umbrella should seek a shelter with fixed distance while not try to run in the rain at the break even velocity...haha
..........................
When I drink beer at night, I often stare at the night sky. I feel it actual is so empty. So, I think if a football is kicked into the sky (just as that one shot by the American captain in the film "the Battle Ship"), will it be able to run outside our galaxy, the Milky Way? (the affection of gravity and other miscellaneous elements such as asteroids, expansion, etc, are ignored. And the ball should not be targeted at the nearby stars such as the Sun, the moon, etc, intentionally. )
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Old Jul 11th 2019, 01:53 AM   #6
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For the rain, you need to angle your body to provide the smallest projected area in the direction of the combined vector of the rainfall and your running.

If you run too fast, you will be unable to maintain this angle.
One might imagine having support sticks with rollers to enable you to keep the perfect angle,
but then one might as well have an umbrella...

The kicked football would have to reach <escape velocity>
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Old Jul 11th 2019, 04:27 AM   #7
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Gravity ignored, I have mentioned. Actually the story of football is the extention of the story of raining.
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Old Aug 3rd 2019, 05:58 PM   #8
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The American captain should not kick the ball himself at that situation. He should let his team member to do it. That's wise choice. Details see film "the Battle Ship".
But nonetheless, the American captain is a hero, haha...
When this semi-tramp met Chuchu (楚楚) 2 plus years ago in Ronggui township, he did have no such courage.haha...
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Last edited by neila9876; Aug 3rd 2019 at 06:33 PM. Reason: correct word
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Old Aug 5th 2019, 09:09 AM   #9
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It's raining, benit...
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Old Aug 5th 2019, 09:19 AM   #10
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Originally Posted by neila9876 View Post
It's raining, benit...
Time to get running then!
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