Electric field strength
Electric field intensity (deprecated)
The magnitude of the electric field vector. The term usually refers to the root-mean-square value of the field.
Note: This term is sometimes called Electric field intensity but such use of the word intensity is deprecated in favour of Field strength since intensity connotes power in optics and radiation.
Reference: I.R.E. (modified)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM