What’s on the Physical Constants poster
A 7-row table: Constant · Symbol · Value.
Constants worth knowing by magnitude.
- Speed of light — c — 3.00×10⁸ m/s
- Planck constant — h — 6.63×10⁻³⁴ J·s
- Elementary charge — e — 1.60×10⁻¹⁹ C
- Gravitational constant — G — 6.67×10⁻¹¹ N·m²/kg²
- Avogadro constant — N_A — 6.02×10²³ /mol
- Boltzmann constant — k — 1.38×10⁻²³ J/K
- Electron mass — mₑ — 9.11×10⁻³¹ kg
Since 2019 c, h, e, N_A and k are defined exactly. They are no longer measured quantities but fixed by definition.
Questions about the Physical Constants poster
- What’s on the Physical Constants poster?
- A 7-row table: Constant · Symbol · Value. Constants worth knowing by magnitude. Speed of light — c — 3.00×10⁸ m/s; Planck constant — h — 6.63×10⁻³⁴ J·s; Elementary charge — e — 1.60×10⁻¹⁹ C; Gravitational constant — G — 6.67×10⁻¹¹ N·m²/kg²; Avogadro constant — N_A — 6.02×10²³ /mol; Boltzmann constant — k — 1.38×10⁻²³ J/K; Electron mass — mₑ — 9.11×10⁻³¹ kg. Since 2019 c, h, e, N_A and k are defined exactly. They are no longer measured quantities but fixed by definition.
- Who is the Physical Constants poster for?
- Physical Constants belongs to the Physics section rather than to a school year, because physical science is not something one grade owns. Anyone learning methods can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Physical Constants poster?
- Learn the magnitudes. Recognising an answer that is wrong by 10⁶ is worth more than recalling a decimal. A wall chart earns its place by being glanceable from where the work is happening, so Physical Constants belongs on the wall where that physical science work actually happens, within glancing distance, rather than filed away.
- What other posters go with Physical Constants?
- Accuracy & Precision, Analysing Results and Dimensional Analysis sit alongside Physical Constants in the Physics section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Accuracy & PrecisionAnalysing ResultsDimensional Analysis
- Is the Physical Constants poster free to download and print?
- Yes. Physical Constants 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 Physical Constants poster print at?
- Physical Constants 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 Physical Constants loses nothing.Printing guide
Related posters
Charts that sit alongside Physical Constants on the same wall.
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