Mad scientist Jack Martin shows us how a coin spins inside a balloon. This experiment is easy to do but it'll give you hours of fun.


Make a coin spin inside a balloon
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Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check Gadget Hacks' list of supported iPhone and iPad models, then follow the step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.
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