Radio waves are light.

http://electromagnetic-waves.com/ima...rum%20copy.jpg

Well the problem is that these devices are very expensive. And with the financial trouble out country is in or the many school districts across the country, I do not think we will ever see this as a mainstay across the country in the coming years. Colleges make millions, they can afford thousands of dollars for a device that will decide who will make more millions.

Peace

Bang !!! Boom !!!
 

You must be wrong. I can hear those spaceships blowup in every one of those Star Wars, and Star Trek, movies.

Don't get too excited about the gap between the speed of light in the atmosphere and the speed of light in vacuum (which has 3 syllables, BTW). The former is 99.97% of the latter, which is certainly close enough for government work.

The speed of an electronic signal through wire is also at least 96% of c, which again is close enough, where c is about 671 million mph.

The slowest signal in the PTS system is the transmission of sound from the whistle to the microphone, which moves at a measley 760 mph (though the speed of sound varies somewhat depending on altitude, barimetric pressure, etc.).

For comparison, the speed of nerve impulses in a human timekeeper is no more than 100-200 mph, or about 3 million times slower than c.

If one were to aggregate the time delays in an NBA game due to the PT system stopping the clock, it wouldn't surprise me if the value was much much less than the resolution of the display, and certainly much much less than what the human eye can perceive in terms of legally released on a try/tap for goal.

The system costs about a grand and the batteries cost about $200 a season. The guy makes all his money on the batteries every year. (His batteries are specialized for the system.)

Unless Mike has drastically reduced the price, it's closer to $2500. The batteries are a huge issue. Each set lasts about two games before needing replacement. The batteries are available from other vendors at lower prices but you agree to buy them from PTS. I know of two schools that got tired of the expense and sent it back.

I took a look at their website and immediately suspected that the batteries would be proprietary. There's nothing like residual income. . . :cool:

That website is definitely updated at some value < c

As an observer, I am somewhat not real happy with the devices.
Or possibly "rules" should be made up to utilize the boxes.
I see too many (almost all) D1 officials reach for the magic button
on the belt devices to start the clock...Even the official that administers
the throw-in...Thus, one of his/her hands is used to hand the ball to
the thrower, the other hand is on the devise...No hands left to start
or chop the clock. Not every official on the floor needs to start
the clock on every position.

Why would the official signal for someone else to start the clock when he could push a button and start it himself?

That's my point, all three officials at the same time
reach for the magic button to start the clock. Wonder
how they all know when to start on the touch in bounds
when the ball is not thrown into their primary area?

Part of the system has the clock being activated by someone at the table. So it has been suggested that you use similar mechanics as usual to allow the table as well as all 3 officials starting the clock when necessary.

Peace

Like Jess mentioned, it's the standard government-required "little black box." It is used to monitor NCAA referees, ensuring that they don't log too many miles in a single day, that they're taking required rest breaks, and that they're not traveling too fast. NTSB inspectors are currently evaluating the data from Steve Welmer's little black box after he suffered a serious mechanical failure during a game recently. :D

Well, let's think about this for a minute.

In standard 2 person high school mechanics, the administering official chops the clock. No matter where the ball goes, no matter whose primary it ends up in. So a throw-in from the baseline (hehehe, just twisting the tails of the "endline" folks) to the division line will have both the lead, who administered the throw-in, and the trail, whose area it landed in, watching on-ball. At least briefly.

In NCAAW, a throw-in on the end line has the L administering and counting 5 seconds, while the T is supposed to keep at least a partial eye on the throw-in because he has the chop. If the throw-in goes into the L's area or the C's area, the T is having to look over there to watch for the first touch.

That's nearly as appalling as all three officials starting the clock when using PTS.

But then, the reality is it just isn't that big a deal for any official to sneak a peak at the throw-in. If we didn't, how would we know whose area the throw-in is going to? As a non-administering official, how would I know to pick up a throw-in that came into my area if I'm not keeping at least a partial eye on the throw-in?

In other words, it's a non-issue.