Since the square is known to be magic, we can assume from basic "magic theory" that the missing numbers are those absent at the moment from the series 1 to 16. The main insight then required is to spot that the third column from the left must contain both 2 and 3, in order to achieve the 34 constant (because 1 and 4 are already positioned).
Thanks to specialised microscopes, we have long been able to see the beauty of single atoms. But strange though it might seem, imaging larger molecules at the same level of detail has not been possible – atoms are robust enough to withstand existing tools, but the structures of molecules are not. Now researchers at IBM have come up with a way to do it.
Rockets that use charged particles to propel fast missions to Mars are one step closer, now a small-scale prototype has been demonstrated at full power.
