What’s on the Boundary Conditions poster
A 4-row table: Component · Dielectric boundary · Good conductor.
Two interfaces, four field components, one set of rules.
- Tangential E — Continuous — Zero at the surface
- Normal D — Jumps by surface charge — Equals surface charge
- Tangential H — Continuous — Equals surface current
- Normal B — Continuous — Zero inside
Forcing these conditions at an interface is what produces Snell's law, the Fresnel coefficients and every waveguide mode.
Questions about the Boundary Conditions poster
- What’s on the Boundary Conditions poster?
- A 4-row table: Component · Dielectric boundary · Good conductor. Two interfaces, four field components, one set of rules. Tangential E — Continuous — Zero at the surface; Normal D — Jumps by surface charge — Equals surface charge; Tangential H — Continuous — Equals surface current; Normal B — Continuous — Zero inside. Forcing these conditions at an interface is what produces Snell's law, the Fresnel coefficients and every waveguide mode.
- Who is the Boundary Conditions poster for?
- Boundary Conditions 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 Boundary Conditions poster?
- Every reflection, refraction and mode result comes from applying these four rows. A wall chart earns its place by being glanceable from where the work is happening, so Boundary Conditions belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
- What other posters go with Boundary Conditions?
- Antenna Fundamentals, Antenna Types and Link Budget sit alongside Boundary Conditions 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.Antenna FundamentalsAntenna TypesLink Budget
- Is the Boundary Conditions poster free to download and print?
- Yes. Boundary Conditions 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 Boundary Conditions poster print at?
- Boundary Conditions 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 Boundary Conditions loses nothing.Printing guide
Related posters
Charts that sit alongside Boundary Conditions on the same wall.
Browse every Electrical Engineering poster, or start from the full catalogue.