What’s on the Maxwell's Equations poster
A 4-row table: Law · Differential form · What it says.
Four laws, and the physical claim behind each one.
- Gauss, electric — ∇ · D = ρ — Charge creates electric flux
- Gauss, magnetic — ∇ · B = 0 — No magnetic monopoles exist
- Faraday — ∇ × E = −∂B/∂t — Changing B produces E
- Ampere–Maxwell — ∇ × H = J + ∂D/∂t — Current and changing D make H
The displacement current ∂D/∂t is Maxwell's own addition, and it is what allows a wave to travel through empty space.
Questions about the Maxwell's Equations poster
- What’s on the Maxwell's Equations poster?
- A 4-row table: Law · Differential form · What it says. Four laws, and the physical claim behind each one. Gauss, electric — ∇ · D = ρ — Charge creates electric flux; Gauss, magnetic — ∇ · B = 0 — No magnetic monopoles exist; Faraday — ∇ × E = −∂B/∂t — Changing B produces E; Ampere–Maxwell — ∇ × H = J + ∂D/∂t — Current and changing D make H. The displacement current ∂D/∂t is Maxwell's own addition, and it is what allows a wave to travel through empty space.
- Who is the Maxwell's Equations poster for?
- Maxwell's Equations belongs to the Electrical Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning electromagnetics can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Maxwell's Equations poster?
- The starting point for every field, wave and antenna result further down the course. A wall chart earns its place by being glanceable from where the work is happening, so Maxwell's Equations belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
- What other posters go with Maxwell's Equations?
- Gauss's Law, Antenna Fundamentals and Antenna Types sit alongside Maxwell's Equations in the Electrical Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Gauss's LawAntenna FundamentalsAntenna Types
- Is the Maxwell's Equations poster free to download and print?
- Yes. Maxwell's Equations downloads as a free PDF with no account, no email and no watermark, like everything else in the Electrical Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Maxwell's Equations poster print at?
- Maxwell's Equations is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Maxwell's Equations loses nothing.Printing guide
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