Stretch Your Mind: Experiment with Rubber Bands

Rubber bands are unusual and fascinating objects. They can serve many purposes because they behave in an odd manner that is counterintuitive.

Such behavior prompted physicist Paul Gluck to conduct a series of experiments and write about his findings.

One such experiment is the effect of heat on a rubber band. While most objects expand when heated, a rubber band contracts.

To see this in action, begin by suspending a rubber band vertically, then attach a weight to it. Measure carefully its stretched length with a ruler.

Rubber bands

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Next grab a hair dryer to blow hot air on the rubber band. Now measure the new length to determine whether or not the band contracted.

Visit OPUBlog to read Gluck’s full series and learn about additional experiments you can perform at home to learn about the unique properties of the rubber band.


Alliance Rubber Company is a family-owned business with humble beginnings that has grown into a thriving American success story. Since 1923, Alliance Rubber has proudly produced rubber bands for use in the home and workplace. Continuing to manufacture its products in the USA, enables Alliance to provide high-quality products, fast service, and fresh stock that is built to last. Alliance Rubber, a women-owned company, manufactures bands that ‘Hold Your World Together.’

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