Weird quantum effect that can turn matter invisible finally demonstrated

A weird quantum effect that was forecasted years back has finally been demonstrated — if you make a cloud of gas cold and thick enough, you can make it invisible.

Scientists at the Massachusetts Institute of Technology (MIT) utilized lasers to squeeze and cool lithium gas to densities and temperature levels low sufficient that it spread less light. If they can cool the cloud even better to outright no (minus 459.67 degrees Fahrenheit, or minus 273.15 degrees Celsius), they state it will end up being totally invisible.

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