What’s on the Energy Levels poster
The rule, 3 worked examples, and the mistake everyone makes.
- A photon is emitted or absorbed when an electron moves between levels; its energy equ…
- ΔE = hf = hc/λ
- Emission = Electron falls, photon out
- Absorption = Electron rises, photon in
- Larger ΔE = Shorter wavelength
- Common mistake: Treating levels as evenly spaced → They converge at higher energy
Each element has a unique line spectrum. That is how the composition of stars is determined from their light.
Questions about the Energy Levels poster
- What’s on the Energy Levels poster?
- The rule, 3 worked examples, and the mistake everyone makes. A photon is emitted or absorbed when an electron moves between levels; its energy equ…; ΔE = hf = hc/λ; Emission = Electron falls, photon out; Absorption = Electron rises, photon in; Larger ΔE = Shorter wavelength; Common mistake: Treating levels as evenly spaced → They converge at higher energy. Each element has a unique line spectrum. That is how the composition of stars is determined from their light.
- Who is the Energy Levels poster for?
- Energy Levels belongs to the Physics section rather than to a school year, because physical science is not something one grade owns. Anyone learning quantum can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Energy Levels poster?
- Bound electrons occupy discrete levels. Transitions between them fix the photon energy. A wall chart earns its place by being glanceable from where the work is happening, so Energy Levels belongs on the wall where that physical science work actually happens, within glancing distance, rather than filed away.
- What other posters go with Energy Levels?
- Quantum Numbers, Blackbody Radiation and Conservation Laws sit alongside Energy Levels in the Physics section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Quantum NumbersBlackbody RadiationConservation Laws
- Is the Energy Levels poster free to download and print?
- Yes. Energy Levels downloads as a free PDF with no account, no email and no watermark, like everything else in the Physics 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 Energy Levels poster print at?
- Energy Levels 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 Energy Levels loses nothing.Printing guide
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