4 ms·
Yes, I stand corrected. Essentially an optical system will bring Moon's surface closer, but even if it brings the surface within 1 cm from the wood, the defuse
by fpoling 8y ago
Yes, I stand corrected.
Essentially an optical system will bring Moon's surface closer, but even if it brings the surface within 1 cm from the wood, the defused Sun light scattered from that surface is not enough to ignite the fire.