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Post by rhyswh on May 18, 2016 8:10:54 GMT
I'm quite surprised I've never come across this topic as I'm sure I'm not the only one to have been stumped by it!
Scenario: Your driving along in the rain, headlights up. You reach a speed of 50mph and realise that the water on your headlight lid moves forward towards the front of the car.......weird . Then you hit 60mph and the water gets thrown forward and off the car! To me this makes no sense, surely the water should be traveling towards the rear of the car. The water that gets thrown forward isn't just trickling off either, you can see it being propelled forward off the car.
I like science and would love to know more about Physics. Unfortunately Physics was one of those lessons at school where the teacher was useless and we spent most of it messing about exploding bulbs and burning wire!
There must be an explanation for this phenomenon? So who's going to blow my mind!
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Post by Horney on May 18, 2016 8:23:51 GMT
It's all to do with air flow. You get vorticies around the headlamp lid that cause the water to be propelled forwards. This really bad Paint picture I just did should show what I mean. It's cool and you're certainly not the only one to notice it.
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Post by rhyswh on May 18, 2016 9:26:32 GMT
That picture even looks magical! Does that happen due to the turbulence caused by the air deflecting on the edge of the headlight?
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Post by Horney on May 18, 2016 9:31:28 GMT
The area behind the light becomes a low pressure area due to the air travelling over the top. Maybe we should have a mighty5s wind tunnel day?
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Post by atlex on May 18, 2016 9:46:55 GMT
tempting. haha.
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