Caesium: The Element that Redefined Time
It’s 60 years since the world’s first atomic clock was created. But what is time? When did time begin, and how accurate is timekeeping today? We'll be asking why we need leap seconds, we cook up a Big Bang with lasagne and hear how planet Earth is a terrible time keeper. Plus, in the news, scientists uncover the cause of tinnitus, what do your baby's eyes say about its future behaviour, and one of the earliest life forms goes under the microscope...
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into their eyes? Research suggests yes...
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Everyone is familiar with the concept of time but when did
it begin? And how do we know when the beginning of time
Humans have been measuring time for centuries - but how
have we got from sundials to atomic clocks?
How was atomic time discovered? And how do atomic clocks
Scientists sporadically need to add or deduct seconds from
our clocks but if our timekeeping is so accurate, why do we
need to do it?
Please put me out of my misery. How is it possible no one persons finger prints are the same as anothers? How can one developing embroyo possible know what pattern another developing embroyo has choosen?