Lurk Report HERE

[Kamog]

It's not so difficult to decide whether to buy flowers or RAM.
If you have a girlfriend, always buy the flowers, unless it's your NOTEBOOK computer we're talking about.

It's very difficult to calculate how fast the skydivers are falling, because skydivers have an irregular shape, and therefore the math for the air resistance is complex. The calculation is easier if we are considering falling spheres, but it is still not that simple. It would probably be easier to empirically determine a skydiver's speed of descent by observing many skydivers and measuring their speeds. Once you have some statistics on the speeds, you will know the ballpark figure. If you know the distance from yourself to the skydiver and you have a stopwatch, you can roughly calculate the speed by seeing how far they go down in a period of time.

A good design is not necessarily the BEST design. It is very possible that the design may be further improved to increase performance, improve efficiency, or reduce the cost of manufacture, or to make it easier to service, etc.

The sales people at Radio Shack don't know what a zener diode is. They don't know the difference between a PNP and NPN transistor and can't help you select the best transistor for your application. They think that a transformer is a toy robot that turns into a car. Well, I'm sure not ALL the sales people, there, just some of them.