2 ms·

Already thought of and also partly tested experimentally, cranes: https://news.ycombinator.com/item?id=17789456 https://news.ycombinator.com/item?id=17789456

by jaclaz 4y ago

Already thought of and also partly tested experimentally, cranes: https://news.ycombinator.com/item?id=17789456 https://news.ycombinator.com/item?id=17789456 https://news.ycombinator.com/item?id=32240546 https://news.ycombinator.com/item?id=32240546 https://news.ycombinator.com/item?id=29910248 https://news.ycombinator.com/item?id=29910248 Rail loop: https://aresnorthamerica.com/gravityline/ https://aresnorthamerica.com/gravityline/