1 citations · 1 across the 4 of their papers we have counts for
4 papers
"Plane" electromagnetic wave in spatially flat Friedman universe
Bernard Jancewicz
The electromagnetic theory is, to a large extend, metric independent. Before the metric is introduced, it is called premetric electrodynamics. Metric enters the constitutive relati…
Premetric electrodynamics
Bernard Jancewicz
Classical electrodynamics can be divided into two parts. In the first one, with the use of a plenty of directed quantities, namely multivectors and differential forms, no scalar pr…
Plane electromagnetic wave in PEMC
Bernard Jancewicz
Plane electromagnetic wave propagating in perfect electromagnetic conductor (PEMC) is considered. Its wave number has no connection with the frequency. An interface is introduced b…
Answer to Question 55: Are there pictorial examples that distinguish covariant and contravariant vectors?
Bernard Jancewicz
We present pictorial means of distinguishing contravariant vectors (or simply vectors) from covariant vectors (or linear forms). When one depicts vector as the directed segment, th…