A view of a selection of slides we used to wireframe the "Launchball" interactive, part of the Science Museum's "Launchpad" gallery

1. pre-task Select a task You have 185 tasks remaining to do Close the door and turn off your phone... You can choose to have a random task selected for you, the next one in the sequence or you can select a theme from the options below Materials Electricity and Magnetism Light Forces and Motion Sound Energy Transfer Weird Physics! Try doing tasks with no gravity, bendy light, magnets that switch polarity and all manner of other strangeness

2. pre-task detail You have selected Task 26: Make the windmill turn… This task demonstrates the power of wind energy. In order to complete it, we reckon you’ll need at least 3 springs , a generator and 2 cogs . If you can complete the task with less gadgets than this, we’ll award you 50 credits. If you can complete the task with the same number of gadgets, we’ll award you 20 credits Go to it! Explainer Vicky says: “ This task looks quite simple, but the thing to remember is that wind energy isn’t terribly efficient. Make sure you choose your gadgets with care. If you need help with how best to conserve energy, you’ll find some helpful stuff here ...” link

3. task Task 26: Make the windmill turn Toolkit 2x spring Springs can be used to conserve energy. More > 4x cog Cogs are used in gearing mechanisms or just simply to connect power sources with other gizmos. More >

4. double-click on gadget Toolkit 2x spring Springs can be used to conserve energy. More > 4x cog Cogs are used in gearing mechanisms or just simply to connect power sources with other gizmos. More > Task 134: Make the windmill turn Air-powered generator Gadget: Air-powered Generator on gallery take it apart video gadget Useful for powering all manner of launchpad gadgets. Hook it up to a rubber band and then to almost anything with a flywheel on it and watch things happen! You have 2 air-powered generators in your toolbox. Need more to fulfill your gadget dreams? Visit the LaunchPad workshop to trade with your friends. Don’t forget to haggle... 2 in your toolbox

5. gadget tabs Toolkit 2x spring Springs can be used to conserve energy. More > 4x cog Cogs are used in gearing mechanisms or just simply to connect power sources with other gizmos. More > Task 134: Make the windmill turn Air-powered generator on gallery take it apart gadget In this video you can see the Jackman generator in action on board HMS Exmoor. Here, the generator is diesel powered. Generators in this environment need to be quiet, efficient and reasonably pollution free. Find out about how this achieved video Video: Generator on board HMS Exmoor

6. video gadget tabs Toolkit 2x spring Springs can be used to conserve energy. More > 4x cog Cogs are used in gearing mechanisms or just simply to connect power sources with other gizmos. More > Task 134: Make the windmill turn Air-powered generator take it apart on gallery gadget The exploded view above shows how the spindle meshes with the rotator unit. Efficiency is kept to a maximum by feeding cold water into the gap between them. See also cogs , and related tasks Take it apart: Generator

7. task completed Task 26: Make the windmill turn Toolkit 2x spring Springs can be used to conserve energy. More > 4x cog Cogs are used in gearing mechanisms or just simply to connect power sources with other gizmos. More > Congratulations! You have successfully completed Task 26 and earned 45 credits. What next? Task 27 or a random task