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Discoveries and projects

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Discovery of magnetismCompass: Which way is north?Compass build (stroke direction)Floating magnetCompass build (magnet orientation)Neutralize a compassCompass interactionsMagnetising materials
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Magnet near compassTracing a magnetic fieldTracing a magnetic fieldDiscovery of magnetic fieldsMagnet and iron filingsMagnetic field3D magnet with fieldMagnetic permeabilityIncrease strength of magnet
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Are 2 magnets stronger than 1?Measure the Earth's field!Earth's magnetic field (how to measure)Force over distanceInverse cube law (deflection method)Inverse Cube RelationshipInverse cube law (method of oscillation)
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Zinc copper cell (reduction-oxidation)How to measure?Battery meter (galvanometer)How Many Turns?Electrolyte test (pure water vs. vinegar)Reverse electrodes (polarity)Electrolyte (strong acid test)Electrolyte (salt test)Electrode (distance test)Electrolyte (temperature test)Electrode (surface area test)Standard cellHow much electrolyte does a single cell need?The battery and electromagnetism
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Discovery of electromagnetismExperiment: What's the shape of a magnetic field?Electromagnetic field (above vs. below)Electromagnetic field (forward vs. reverse)Electromagnetic field (loop)Right-hand ruleBattery meter (galvanometer)
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Series loadPencil resistorVariable resistor (pencil)Listen to variable resistance
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Spinning compassBuild your own motorWhat's next
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Discovery of triboelectric effectPith ball electroscopeFoil leaf electroscopeElectrostatic telegraphs (case study)
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Ping pong ball launcher introductionBuild a ping pong ball launcher Update and modify your ping pong ball launcher
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Thermo can
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Lever Wheel Pulleys Simple machines and how to use this tutorial

About this unit

Rediscover the most important Scientific observations in a historical progression