Gold bar scaled in three dimensions animation
An animation that plays by itself on a loop: gold bar scaled in three dimensions.
Pressure · covers the O-Level, IGCSE, GCSE topic
Use it in your lessons
- Try it here: anyone can unlock 2 figures free, and a free account unlocks up to 5. Runs on a laptop, a Chromebook or a phone; nothing to install.
- Present it and share student links with the teacher plan, from US$5 a month, billed yearly.
- Put it on your own website or LMS for US$9, paid once, or every sim from US$29 a month.
Free guide: 12 practicals as sims, and how to run one in a lesson →
Need a version for your exact set-up? Have one made: US$49 a figure in an order of 5.
More physics sims
- Convection in water and air simDrag a Bunsen burner or an immersion heater and a potassium permanganate crystal around a beaker of water and watch the purple trace the convection loop (or stay put when the water is heated at the top), then pull smoke through a candle-heated chimney box and drag the sun to turn a sea breeze into a land breeze.
- Cooling curve of a pure substance simMelt stearic acid (or paraffin wax) in a hot water bath, drag the boiling tube into an air jacket, click the stopwatch on 30 s at a time and read the thermometer at eye level; your readings make a cooling curve with a flat part at the freezing point, which you read off and explain (the wax, a mixture, has none).
- Density: a regular block, an irregular stone and a liquid simMeasure a block with a rule, find a stone's volume by displacement, weigh a liquid in a cylinder, and work out ρ = m ÷ V for each.
- Digital calipers: outside, inside and depth simClose the jaws on a rod, open them in a pipe, push the depth rod into a hole, find and correct the zero error, and choose between a rule, calipers and a micrometer.
- Digital micrometer screw gauge: zero it, then measure a wire simFind and correct a positive or negative zero error, close the jaws on a wire with the ratchet, measure the diameter at three places, average, and work out A = πd²/4.
- EM spectrum explorer: radio waves to gamma rays simDrag a slider along the spectrum on a log scale: λ and f change in opposite directions while c stays 3.0 × 10⁸ m/s, and each band shows its source, detector, uses and dangers.