Re: Some Funny Pics.

Khai · 23 May 2010, 16:06

@unknownuser said:

you know that's the kid the Up! kid was based on?

remus · 23 May 2010, 20:33

thomthom · 23 May 2010, 20:37

Is that a proper golf-ball??

remus · 23 May 2010, 20:53

To the best of my knowledge, although the gif did come from some random site, so impossible to say definitively.

thomthom · 23 May 2010, 21:01

It look utterly nuts that a golf ball would deform like that, essentially when you think of how hard it feels. But all these ultra-slow motion video clips, and the amazing program Time Warp for instance, one realises that rigid objects often are much more flexible than one originally assumed.

remus · 23 May 2010, 22:35

Some very brief research suggests that different varieties of golf balls exist, specifically you can get ones that are much softer than a regulation ball, so perhaps its one of those.

TIG · 23 May 2010, 22:41

Solidity is an illusion.
I know when a golf ball hits you on the head it seems quite solid... BUT most 'things' consist of empty space with a few atoms thrown in - so under levels of stress and strain than we don't normally experience [or perhaps more exactly, we don't 'notice'] - seemingly solid objects can behave as if they are 'elastic' or even 'permeable' - e.g. electrons passing through gold-leaf sheets unchanged etc...

remus · 23 May 2010, 22:45

That reminds me of another point: we dont know how fast the ball was travelling. If it was going at mach 2 i wouldn't be very surprised if it wobbled a bit when it hit something stationary...

thomthom · 23 May 2010, 23:03

@remus said:

That reminds me of another point: we dont know how fast the ball was travelling. If it was going at mach 2 i wouldn't be very surprised if it wobbled a bit when it hit something stationary...

Then I'm more surprised it didn't break.

Alan Fraser · 24 May 2010, 09:12

I can't believe that's a normal golf ball. They do come with a variety if fillings...including liquid cores...but the degree of deformation in that shot suggests that the whole interior underneath the casing is liquid. Normal golf balls do distort, but nothing like that extent. http://www.springerlink.com/content/936p5m7481450164/fulltext.pdf

Firing a normal ball at supersonic speed would probably cause it to disintegrate. Other full videos of this claim it was fired at a mere 150 mph. That's about the same speed that a ball leaves the tee. If the club compressed it that much, it would only travel a few yards.
[flash=640,385:1umsl1lo]http://www.youtube.com/v/AkB81u5IM3I&hl=en_GB&fs=1&[/flash:1umsl1lo]

It's probably a staller or a sponge ball.