Of course the effect did exist before the railroads. However, it wasn’t yet defined by the physics of the day, nor was it even noticed before the railroads...
It may seem somewhat archaic to retain an oscilloscope’s original measurement tools of screen graticules and cursors, but these tools are hardly outdated.
This year’s DOE Lighting R&D Workshop covered topics like lighting for plants and human health, and integration of lighting and controls into new construction.
This article studies the influence of IC output drive strength on electromagnetic interference (EMI) by performing post-layout simulation of signal integrity and EMI using Mentor Hyperlynx.
The JESD204B chip-to-chip data interface will enable a breakthrough that wideband communications designers need in space applications.
The problem is that for any unknown signal, the RMS 'value' can only be defined if you give a start and stop time for the relevant segment of signal.