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The mind-bending mirrors behind advanced technology
Huge, tiny or incredibly flat, advanced mirrors are essential to high-tech machines.
High on a mountain, in Chile's bone dry Atacama desert the European Space Observatory (ESO) is currently building the world's largest optical telescope. Dr Elise Vernet is an adaptive optics specialist at ESO and has been overseeing development of the five giant mirrors that will gather and channel light to the telescope’s measuring equipment. In 2020, a research team was able to make a single layer of 200 aligned atoms behave collectively to reflect light, effectively creating a mirror so small it cannot be seen by the naked eye.
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