3 ms·
I wonder if it'd be feasible to just have the sail be a one way mirror? Transparent on the "front".
by e12e 7y ago
I wonder if it'd be feasible to just have the sail be a one way mirror? Transparent on the "front".
- doctorphil 7y agoThere are no known materials that act as a one way mirror. We don't expect to find any such material. With a one way mirror it would be easy to lower global entropy.
- cben 7y agoHowever, one side reflective/white one absorbing black is possible. I guess the weight of extra paint is not attractive, compared to attitude control which you need anyway. EDIT: this matters because full 180° reflection is like "bouncing" the photon to opposite velocity, can up to double exchanged momentum vs absorption. (This is why reflective mylar is nice)