Long before Make in India, Anna Mani helped build India’s weather science from scratch, making instruments, data, and global respect. Today she is barely remembered.
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What costs more energy — running a quantum clock or observing it?
Keeping track of time seems simple. A watch ticks, a pendulum swings, and a calendar flips. But at the quantum level, marking time is far more complicated — and far more expensive than anyone expected ...
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