 What we have done here is a way to do robust wireless power transfer and this is going to be important for dynamic charging in trying to transfer power wirelessly into a moving object. The source coil here is going to generate a magnetic field that couples basically to the receiving coil and the receiver coil actually has a light emitting diode attached to it. The light emitting diode is going to stay on over a range of distance as the distance is varying and as you see here. This is perhaps the most important outcome of this experiment that we have constant wireless power transfer and high-efficiency transfer across a wide range of distance. This is in contrast to a previous wireless power transfer scheme where you only get brightness at a certain distance so for example it would be bright over here and not pretty much dim outside its range. This is not trying to do long distance power transfer as you can see here we're talking about maybe a meter scale kind of transfer. You can think about for example transferring into a moving vehicle or into any other moving object that one can think of. Another simple example is you have a device on your body that need to be charged for example if you want to charge your cell phone as you are walking around in a room. Being able to do this in a robust fashion as we do here could potentially be quite interesting.