A 4-D clock that will tick even after end of universe

WASHINGTON (TIP): Scientists have proposed to build the first ever 4-D space-time crystal clock that they claim will keep accurate time forever, even after the heat-death of the universe.

This is the “wow” factor behind a device known as a “space-time crystal,” a four-dimensional crystal that has periodic structure in time as well as space, scientists said.

Researcher Xiang Zhang from Berkeley Lab’s Materials Sciences Division, who led this research, and his group, have come up with an experimental design to build a crystal that is discrete both in space and time – a space-time crystal.

However, there are also practical and important reasons for constructing a space-time crystal.

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Pak lodges protest over India’s ‘ceasefire violation’ on LoC

ISLAMABAD (TIP): Pakistan today summoned the Indian Deputy High Commissioner here over the killing of a civilian in India's "unprovoked ceasefire violation" across the...
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