Questions about the Uncertainty poster

What’s on the Uncertainty poster?

The rule, 3 worked examples, and the mistake everyone makes. Uncertainties combine differently for sums and for products.; Add/subtract: add absolute · Multiply/divide: add percentage; (5.0 ± 0.1) + (3.0 ± 0.2) = 8.0 ± 0.3; (5.0 ± 2%) × (3.0 ± 3%) = 15.0 ± 5%; Raised to a power n = Multiply percentage by n; Common mistake: Adding percentage uncertainties when adding quantities → Add absolute…. Quote uncertainty to one significant figure, and match the value's decimal places to it.

Who is the Uncertainty poster for?

Uncertainty 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 Uncertainty poster?

A measurement without an uncertainty is not a measurement. A wall chart earns its place by being glanceable from where the work is happening, so Uncertainty belongs on the wall where that physical science work actually happens, within glancing distance, rather than filed away.

What other posters go with Uncertainty?

Significant Figures, Accuracy & Precision and Analysing Results sit alongside Uncertainty in the Physics section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Significant FiguresAccuracy & PrecisionAnalysing Results

Is the Uncertainty poster free to download and print?

Yes. Uncertainty 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 Uncertainty poster print at?

Uncertainty 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 Uncertainty loses nothing.Printing guide