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Good point.

An economic assessment is pretty hard you have to admit. I did mention the objective is to make a solar power satellite much smaller through the use of concentrating lenses. I quote from my paper: "The example design consisted of a 600-meter diameter Fresnel lens made of type-214 quartz in a...

I am interested in different people's opinions. Sometimes a little cross-pollination in engineering and science helps things along.

Whoops. I though these were separate message boards? Obviously not.

Hello, I've posted my most recent paper on optical solar energy transmission to Earth on my website. This is one of my foundation space infrastructures, eventually leading to greater things. If anyone would care to nitpick it and point out any obvious laws of nature that are violated, or...

Aha! I see the problem. You *were* using the distance value in my paper, which was a typo. I corrected the typo, and updated the paper on my website. You can download the updated paper if you like. Fortunately this typo only affected my paper and not my algorithms. Therefore I believe this...

I proposed a 600-meter diameter lens. That's sixteen-orders of magnitude smaller in surface area than the aperture you are suggesting would be needed. As stated in my paper, the beaming efficiency is based on the product of the areas of the transmitter and receiver, via the equation: Ar*At =...

Your distance value is 3-orders of magnitude too large. No wonder you think divergence will prevent it from working! If Earth were 1000-times further from the Sun, I wouldn't expect it to work either!

The distance from the Sun to the Earth is 149,600,000 km, not the value you stated.

Forgive me if I don't believe your skepticism. The reflection of sunlight from my wristwatch will create a bright spot on the wall. A magnifying glass can focus sunlight sufficiently to ignite paper. Both are examples of sunlight made brighter at a distance using a refracting material. This...

I've never heard of the constant brightness theorem. But I've heard of beams with gaussian profiles collimated with diffraction-limited optics. On the latter basis, equal-sized optics ~500 meters in diameter will transmit energy to Earth, 149.6 million km distance, with greater than 90 percent...

Would anyone like to nitpick this paper for me? Any glaring errors? Any laws of nature that would outright prevent it? Or impracticalities with the same result? http://www.geocities.com/womplex_oo1/AeroSpace.html