query: How can vacuum have an impedance?
positive_passages.docid: 147803
positive_passages.text: Why does vacuum have a nonzero characteristic impedance towards electromagnetic radiation?
negative_passages.docid: 50289
negative_passages.text: The vacuum light speed: Is it really constant, i.e., independent of location in space-time?
negative_passages.docid: 122541
negative_passages.text: How would Gauss' law hold in time varying electric fields?
negative_passages.docid: 119523
negative_passages.text: Regularization of the Casimir effect
negative_passages.docid: 81450
negative_passages.text: Have we managed to make a perfect vacuum?
negative_passages.docid: 83507
negative_passages.text: How is possible for current to flow so fast when charge flows so slow?
negative_passages.docid: 10457
negative_passages.text: Why should a voltmeter have a higher resistance than of any circuit element across which the voltmeter is connected?
negative_passages.docid: 147906
negative_passages.text: How can Ohm's law be correct if superconductors have 0 resistivity?
negative_passages.docid: 71369
negative_passages.text: Electric force between charges in two different media
negative_passages.docid: 69026
negative_passages.text: increasing impedance of headphones
negative_passages.docid: 121022
negative_passages.text: Why are excess charges in a conductor at the surface?
negative_passages.docid: 128528
negative_passages.text: Oscillations of Dielectric Slab in Parallel plate capacitor
negative_passages.docid: 2657
negative_passages.text: Can energy be taken out of the QFT vacuum?
negative_passages.docid: 16300
negative_passages.text: What happens, if a rocket is filled with a vacuum instead of high pressured air?
negative_passages.docid: 152865
negative_passages.text: If a superconductor has zero resistance, does it have infinite amperage?
negative_passages.docid: 118352
negative_passages.text: Why Characteristic Impedance must be 50 ohms?
negative_passages.docid: 88116
negative_passages.text: Ampere's law and external currents