- Joined
- Nov 15, 2021
Stealth planes are only stealthy to electronics. Satellite imagery and cameras can still see them
Cameras and radar systems both do fundamentally the same thing, respond to electromagnetic waves bouncing off things. The reason cameras suck is the wavelengths they react to are so small that they bounce off anything and everything, including crap like dust particles and water vapor. It's why a camera can be defeated by a cloud.
Radar reacts to wavelengths thousands of times longer than visible light, which don't bounce off much. Steel, aluminum, goose meat...the atmosphere, not so much. That's why with radar, I don't need a high-res photographic image to know there's something coming at me.
Imagine if you could sweep the sky with a spotlight, and objects up to 60 miles away would glow so brightly that you could see them through clouds, during the day. That's basically what a radar is.