Recent content by Eternals

Thanks a lot for your replies! I think I understand this better now. I have a few more questions left: 1) If I understood correctly, multiplying both sides does not always lead to equivalent statements. So, when do you know if the implications can go in both directions? 2) Do you always have to...

Homework Statement Solve the equation, if a solution exists: 3x = 4 (mod 6) Homework Equations If a = c (mod m), b = d (mod m), then: a * b = c * d (mod m) The Attempt at a Solution There is no solution, because 3x will always result in 0 or 3 for all integers x. However, what I...

I am wondering how a Kelvin water dropper works and can generate sparks. Basically, water drips onto two sides, and the apparatus attracts positive charge to one side and negative charge to another side. The charge eventually builds up high enough to make a spark. You can see more information...