Basic electronics and Ohm's (resistance) is really not complicated. Simply put, and ohm meter measures resistance in a circuit. Think of a copper wire. If you attached the ohm meter to each end, you get a reading of 1. If you measure the copper to the outer sheath, you get no reading....or infinity. OHms is everything in between. if you were to slice a pencil in half and connect the meter probes to either end of the graphite lead, you'd get a reading of infinity or slightly below. As you move the probes closer together, the ohms decrease closer to 1. This pencil with moving the probes together is essentialy a variable resistor. The graghite in the pencil is a semiconductor...just as a resister in a radio. A wire is a conductor, the plastic sheath is an innsulator... I hope I made some perspective in this and understand why the lights blink faster with LED's. The filiment in a standard bulb draws more load than a LED, so weakening the flow of current to the LED will cause a "false" load on the circuit (sort of)...there is so much more to electronic theory, but then, I'd be getting way out of the league. Good luck!