| 1 | The question is what does the curl of a force field mean? | |
| 2 | That's Steve Jobs' classic reality-distortion field at work. | |
| 3 | Now,the other kinds of vector fields we have seen physically are force fields. | |
| 4 | It tells you that you cannot get energy for free out of your force field. | |
| 5 | So, it's a force field is the gradient of a potential so, I'll still keep my plus signs. |