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Waves contain lots of information. They are also time invariant, which means that they will behave the same regardless of whether time moves forward or backward. This isn’t a property we observe often in life since time just moves forward for us. But a new experiment has demonstrated a method of wave control that can, in a sense, roll back the clock.  To do this, the scientists created a instantaneous time mirror, or ITM. When they create a disturbance on the surface of a pool of water, it…

Waves contain lots of information. They are also time invariant, which means that they will behave the same regardless of whether time moves forward or backward. This isn’t a property we observe often in life since time just moves forward for us. But a new experiment has demonstrated a method of wave control that can, in a sense, roll back the clock. To do this, the scientists created a instantaneous time mirror, or ITM. When they create a disturbance on the surface of a pool of water, it…

Porción de la biblioteca del módulo Zvezdá en la ISS. Llama la atención el ejemplar de la revista Novosti Kosmonavtiki y los libros en japonés

Porción de la biblioteca del módulo Zvezdá en la ISS. Llama la atención el ejemplar de la revista Novosti Kosmonavtiki y los libros en japonés

Peluches en la escotilla de la Soyuz TMA-13M. La jirafa se usó como indicador de aceleración durante el lanzamiento de la TMA-13M.

Peluches en la escotilla de la Soyuz TMA-13M. La jirafa se usó como indicador de aceleración durante el lanzamiento de la TMA-13M.

I got to know Charles “Chip” Sebens back in when he emailed to ask if he could spend the summer at Caltech. Chip is a graduate student in the philosophy department at the Universi…

The target assembly at the National Ignition Facility’s fusion experiment. The two triangle-shaped arms shield the cylinder until five seconds before a blast from the world’s most powerful lasers.

The target assembly at the National Ignition Facility’s fusion experiment. The two triangle-shaped arms shield the cylinder until five seconds before a blast from the world’s most powerful lasers.

A levitated drop within the WU-BESL. Electrodes above and below the sample charge its surface by induction, and it rises in the evacuated chamber, hoisted by electrostatic attraction. This ‘containerless’ technique allows the drop to solidify without crystallizing.

Why some liquids are 'fragile' and others are 'strong'

A levitated drop within the WU-BESL. Electrodes above and below the sample charge its surface by induction, and it rises in the evacuated chamber, hoisted by electrostatic attraction. This ‘containerless’ technique allows the drop to solidify without crystallizing.

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