THE TOOLBOX

Science tools

4 free tools for science. Run these tools in your browser without an account.

• Physical unit converterConvert a bounded set of physical units, with U.S. liquid measures, exact factors and a readable calculation.
• Photography depth-of-field simulatorSee how aperture, lens length, sensor size and focus distance change framing and depth of field.
• Audio spectrum explorerExplore frequencies in a local PCM WAV, one window at a time.
• Sun & shadow plannerSee sun direction and a simple object’s shadow through the day.

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