Decorated Tree

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 446.7 Hz, 26 cents sharp of A4. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap to switch the lights on or off.

A decorated tree is an evergreen tree, such as a fir or a pine, brought indoors and hung with lights, ornaments and a star on top for the Christmas season. The custom began in Germany about 500 years ago and spread around the world. Evergreens stay green all winter, so they became a sign of life in the darkest time of the year.

The tree starts with its lights off. Tap to switch them on: they sweep up the tree, stay on and cycle through chasing, rippling and steady patterns, while the star glows. Tap again to switch them off. The first electric tree lights were made in 1882. With ✋ Hands-on on, pick the tree up and shake it: the baubles swing on their hooks, harder the harder you shake, then settle.

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