What's A Nanosecond?

[tung tied]

But with a stance like that, I suspect he sliced it. From my experience a sliced ball travels faster and farther than balls that I occasionally hit correctly.

[Pathpounder]

I think I need some of that orange and blue wood in the background and sell it to my fellow woodworkers

[RodKirby]

Beautiful sunny day but temp is 40°F ...

Anyway, I think I'll go for a ride

[Wood_workur]

Technically speaking, people really don't have any idea how short a nanosecond really is.

I'm not an expert in golf, I follow tennis and baseball, where the velocity of the ball pitched or served is around 90 to 130 mph. Assuming the golf club is a bit longer than the tennis racket and the angular velocity is the same, I'm guessing golf ball velocities leaving the club face will be around 150 mph... a quick check on the internet seems to confirm this. Apparently the record is 204 mph, but that was a pro, so 150 mph is probably tops for a child, maybe 100 mph is more realistic.

yep, those numbers are pretty good, maybe a bit off, but still not that far off. Tiger will launch a ball to go 300 yards at 180 mph. He swings at about 120 mph.

I know when I was younger me and my friends would drive 150. This kid is a bit younger, so I'll call it 130.

now, with a simple fraction, we can see this come together:

300/150=180/x.................x=90mph

now because trajectory is also a factor (tiger will use a 8 degree driver and get a lot of altitude, most kids will not use anything less than 10.5 degrees and they shots are not that high, and tiger's driver is also longer), I'd say the kid swings at 80 mph. Average adults can swing at 105 or so.

120/80=180/x..................x=120mph.

take the average, and I give that kid a ball speed of 105 mph.

But with a stance like that, I suspect he sliced it. From my experience a sliced ball travels faster and farther than balls that I occasionally hit correctly.

for some reason the ones that split the fair way, or I hit with a nice draw seem to go faster than my (occasional) slices.

next time you swing a club make sure you don't collapse your knees and pretend you are holding a hat under your arms. that should fix the slices.

[Alex Franke]

At 225 ft. per second, that’s 2.5 milliseconds to impact.
Or, as we say in engineering, roughly 2,500,000 nanoseconds.

Alas -- you just took all the magic out of it for me

:lol: Great picture! Even if it is a fake, I think it's a great one.

[LCHIEN]

sure its still funny. just bothers me to see such a wildly exaggerated use of a nanosecond. I deal in nanoseconds at work, I know its a very short period of time. Humans can't do anything in less than a big handful of milliseconds.

And, after all he did ask the question - "What's a nanosecond?"

[Alex Franke]

sure its still funny. just bothers me to see such a wildly exaggerated use of a nanosecond. I deal in nanoseconds at work, I know its a very short period of time. Humans can't do anything in less than a big handful of milliseconds.

And, after all he did ask the question - "What's a nanosecond?"

I actually have one of Grace Hopper's nanoseconds in my attic... My father got it at a lecture back in the day. It really is very remarkable how short it is, and that piece of wire is a great illustration of it.

[LCHIEN]

I actually have one of Grace Hopper's nanoseconds in my attic... My father got it at a lecture back in the day. It really is very remarkable how short it is, and that piece of wire is a great illustration of it.

Signal Propogation Speeds
wire: 1 ns/ft (3.28 ns/meter)
free space: 3.33 ns/meter
optical fiber: 5 ns/meter (seems slow perhaps but that's what makes it a fine waveguide.)

[LinuxRandal]

I deal in nanoseconds at work, I know its a very short period of time. Humans can't do anything in less than a big handful of milliseconds.

And, after all he did ask the question - "What's a nanosecond?"

Have the wife ask you do you know what day x is/was (and remember NOW that it is/was anniversary, her birthday, etc)...

I've seen a few guys figure out what a nanosecond was.....


A friend did, when his wife got the Happy Birthday call from her sister. LOL