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Learn: Experiments

Virtual experiments that follow school practicals. Set things up, take readings, draw the graph and check your answer, as many times as you like.

Planned experiments

Electricity Coming soon

Build a circuit, change the resistance and read the meters.

  • Ohm's law
  • Resistors in series and parallel

Light Coming soon

Move the object and watch the image form.

  • Mirrors and lenses: ray diagrams
  • Refraction through a glass slab and prism

Motion Coming soon

Time a pendulum or a rolling ball and plot your readings.

  • Simple pendulum
  • Distance–time and speed–time graphs

Chemistry lab Coming soon

Mix, measure and see the change, without the risk.

  • Acid–base titration
  • pH and indicators
  • Rates of reaction

Biology Coming soon

Look, count and record.

  • Osmosis in potato strips
  • Counting cells and leaf stomata

Your own readings Coming soon

Type in readings from a real school practical to plot them, find the slope and work out the error.

Lab tools you can use today

Titration curve simulator #82 Draw the exact pH curve for strong, weak and polyprotic acids and bases, see the equivalence points and the right indicator, and find the end point of your own measured titration from its derivatives. Publication plot maker #27 Paste columns or open a CSV or Excel file and get a clean scientific figure with error bars, sized for a journal column. Download vector SVG or PDF, or PNG at 300 or 600 dpi. Your data stays in your browser. Uncertainty propagation calculator #25 Type your formula and your measurements with their uncertainties, or paste repeated readings. Get the result with its uncertainty, which input matters most, and a Monte Carlo check. Solutions and dilutions calculator #30 Work out how much to weigh for a solution in M, mM, mg/mL, % w/v or ppm, how much stock to dilute, and a full serial dilution plan with volumes for every tube. Gas law calculator #83 Work out pressure, volume, amount or temperature of a gas in any units, with the mass and density of a named gas, the van der Waals real-gas answer and how far the ideal gas law is off. Beer–Lambert calculator #84 Solve A = εlc for absorbance, molar absorptivity, path length or concentration, convert to transmittance, check the reading is in the reliable range, and view UV-Vis spectra with their maxima.

Learn follows the topics of the NCERT books used for Class 8 to 12 in India, so students can practise what they study at school. fibub is an independent free site, not part of NCERT, and it doesn't copy textbook text or pictures. Like every fibub tool, everything runs in your browser: no sign-up, nothing about you is saved.