Nowhere of water droplets?

[Jay-qu]

Yes..and...? Take your virtual sphere & populate its surface with protuberences. In so doing, you have inadvertantly populated it with dimples, which lie between & under the protuberences. Now do the opposite; start with the virtual smooth sphere & populate it with dimples. Voila, automatic protuberences. :hihi:

 

But there is a slight difference... in option A you end up with convex protuberences and in option B you have concave dimples... think about it they look different :cup:

[Jay-qu]

Is a zebra white with black stripes, or black with white stripes?:hihi:

 

white with black stripes, owing to the fact that their bellies and the insides of their legs are purely white :cup:

[Boerseun]

white with black stripes, owing to the fact that their bellies and the insides of their legs are purely white :hihi:

Then again' I'd say black with white stripes, seeing as the insides of their ears are pure black...:cup:

[Turtle]

But there is a slight difference... in option A you end up with convex protuberences and in option B you have concave dimples... think about it they look different :cup:

 

___The point is that the inside of a convex protuberence is a concave dimple. I believe there is a difference - a boundary if you will - where for our golf-ball & hailstone examples, the drag starts increasing rather than decreasing. If the dimple depth/protuberence height ratio is at some 'low' level you get low drag far flying balls; if the ratio is large, you get high drag short flying balls. :hihi:

[Turtle]

Is a zebra white with black stripes, or black with white stripes?:cup:

 

___If you shave a Zebra, other than an angry Zebra, what do you see? I only ask as I recently heard that not only do Tigers have striped fur, they have striped skin.

 

:hihi:

[Jay-qu]

Then again' I'd say black with white stripes, seeing as the insides of their ears are pure black...:cup:

 

the inside of their ears isnt black... unless you count the fact it would be dark and hence black without a torch light :hihi: