3 ms·
Do you have references about how to use an abacus? I just know how the obvious uses: counting, summing and subtracting. There is a famous story about Richard F
by neves 10y ago
Do you have references about how to use an abacus?
I just know how the obvious uses: counting, summing and subtracting. There is a famous story about Richard Feynman and the abacus: http://www.ee.ryerson.ca:8080/~elf/abacus/feynman.html http://www.ee.ryerson.ca:8080/~elf/abacus/feynman.html where the guy makes a lot of difficult calculations.
- partycoder 10y agoI love that book. The "Fixing radios by thinking" part is a great insight on how Feynman developed such powerful intuition around physics at an early age. In contrast, modern electronics are not as transparent and intuitive as their vacuum tube counterparts. I wonder what would have happened if Feynman had to fix radios with transistors or integrated circuits.
- neves 10y agoI've just found a great one: http://webhome.idirect.com/~totton/abacus/PDF.htm http://webhome.idirect.com/~totton/abacus/PDF.htm