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And how thick is the "edge"?

If it has a finite thickness, it isn't an edge,

As usual, we need to distinguish between a model and reality.

Adequacy of a model depends on its applications.

Quote from: hamdani yusuf on 21/02/2024 15:22:54Adequacy of a model depends on its applications. And as you have shown, you can't apply Huygens usefully to a thick boundary.

Not "we". Just you.

Quote from: paul cotter on 15/02/2024 12:45:59I agree with Alan that Hamdani behaves in a gentlemanly manner despite my disagreement with his technical arguments. On the subject of Tesla and his quotes I disagree. Tesla was a brilliant engineer but he was totally out of touch with the rapidly advancing scientific knowledge of his era and this situation worsened with time.Which technical arguments do you think that I got wrong? To maintain order, IMO it would be better to discuss technical issues in their respective threads. As far as possible, here we'll discuss non-technical things only.

I agree with Alan that Hamdani behaves in a gentlemanly manner despite my disagreement with his technical arguments. On the subject of Tesla and his quotes I disagree. Tesla was a brilliant engineer but he was totally out of touch with the rapidly advancing scientific knowledge of his era and this situation worsened with time.

Sure, there are hard targets out there, but in the one-on-one exchanges about identity beliefs, there's likely a better way. Here's a clip by educator Melanie Trecek-King of www.thinkingispower.com..

Quote from: alancalverd on 13/05/2024 17:18:52Let's begin with your perspective. What unexpected observation have you made?There's no way I can guarantee that nobody else has expected my observations. But at least I know they deviate from some mainstream textbooks. I've made many experiments using laser and microwave transceiver, and some results that I think are unexpected by most people are as follows. Non-diffractive edge and non-diffractive slit using total internal reflection. Polarized diffraction by the edge of abortive polarizers. Blocking mechanism of microwave by partial polarizers. Conjoined twin polarizers. Polarization twister of microwave. Electrodynamic balance.

Let's begin with your perspective. What unexpected observation have you made?

In mathematics, the Riemann hypothesis is the conjecture that the Riemann zeta function has its zeros only at the negative even integers and complex numbers with real part 1/2. Many consider it to be the most important unsolved problem in pure mathematics. Wikipedia

https://brilliant.org/wiki/infinity/Infinity is the concept of an object that is larger than any number. When used in the context "...infinitely small," it can also describe an object that is smaller than any number. It is important to take special note that infinity is not a number; rather, it exists only as an abstract concept. Attempting to treat infinity as a number, without special care, can lead to a number of paradoxes.Infinity is not a number!

Accepting the validity of diagonalization method comes with the cost of flawed and broken math. The diagonalization method contains loop holes like what we find in "proof" demonstrating that 1=2.

That's why we need some sort of virtual universe.

Quote from: hamdani yusuf on 18/05/2024 23:00:47That's why we need some sort of virtual universe.You have the best one inside your head.