| A Kelvin Double bridge is a variant of the Wheatstone bridge used for measuring very low resistances. |
| However, there are a great number of alloys in aluminum, brass, and stainless steel, and doubtless there are also different resistances for many. |
| The separate resistances of two incandescent lamps are 200 ohms and 70 ohms. |
| Yet many open-pollinated and hybrid varieties that have no listed disease resistances do have good resistance to certain pathogens. |
| When different germs trade resistances, you could end up with an untreatable disease. |
| The Wheatstone bridge is unsuitable for measuring very small resistances, of a few ohms or less. |
