Recent content by this_tim

Makes sense. Thanks!

Am I correct in guessing that a "perfectly" conducting screen is very difficult, if not impossible to achieve? And please say more about your "conservation has to apply" statement.

tech99, Oh wow - finally something that makes a whole lot more sense, and a breakaway from the typical thinking in regard to just the waves themselves. Thanks so much for taking the time to provide the explanation. Of course I don't yet understand the complete details of what you wrote, but can...

tech99, could you explain more about those "local fields" such as where they come from and why they would be a problem. I haven't much knowledge of physics, but am a programmer of 20+ years and though the two aren't exactly related, I "may" be able to follow along if you explain a bit more so I...

Since the wavelength microwaves used in microwave ovens have a wavelength of 12cm, why are the holes in the grid behind the glass so small? If they were 12cm would the microwaves still stay confined? If the small holes are only to "play it safe" that seems irrelevant since microwave has a...

That's actually a pretty good idea that somehow eluded me - thanks.

I'm working on a project in which I'm using a basic moisture sensor that I've made by sliding an insulated wire inside of a copper tube in such a way that the insulated wire with it's insulation extends past the tube about 1/8". That is then poked into the ground. On the other end of the copper...

My simple suggestion is - get http://www.maplesoft.com" . I'm 53 years old and just began studying calculus less than a year ago. I discovered Maple just a few months ago and never figured there was anything like that which could make even very difficult math so easy and fun. As far as books...