Rocket Ascents... Can divers breach like a fish (split from Accident in Mich)

[DandyDon]

At least I think he laid to rest the question that was once actually debated here - can a diver clear the water with rapid ascent...?

I never believed the claim, but there was controversy.

 

[The Kraken]

I did once !!!!

I stopped at the Waffle House and had the hash browns scattered-smothered-covered-chunked-topped-diced-peppered and 'shroomed for breakfast right before the dive.

Needed to get back on the dive boat!

the K

 

[Blackwood]

Na, golf balls have dimples for two reasons -

1. They act a 'purchase' on the air. Just like a seam on a baseball, dimples increase air resistance so as the golf ball rotates with under spin, it is actually curving upward (like a fastball, only faster). This allows for lift and increases the distance the ball flies. I've heard that without dimples, the maximum distance on a well struck driver would be less than 150 yards off the tee.

2. Girl golf balls think they look cool on the guys. :14:


Stan

Yes rotation causes lift (Magnus effect).

But the dimples do reduce form drag. They create a turbulent boundary-layer which stays attached longer thus reducing the size of the wake.

 

[dherbman]

But was it fun?

1-10, with climbing and topping large trees as a 9 ......It was a 5.