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I thought that stealth planes had the radar cross-section of something like a marble. That was the first gen planes too, I think it might even be smaller now. I

I thought that stealth planes had the radar cross-section of something like a marble. That was the first gen planes too, I think it might even be smaller now. I would have thought that's effectively close to invisible.

DuskStar 9y ago
The problem is, radar returns decline with the 4th power of distance - so if you can detect a 1m square at 100km, you can detect a 1cm square at 10km and a 0.1mm square at 1km. Yeah, a marble is fantastic in comparison to a barn door - but that 4th power cuts both ways.