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Z - Factary

 

Zetta

 

A prefix indicating a thousand billion billion of something. In numbers it can be written as

1021 or 1 000 000 000 000 000 000 000

The volume of the pacific ocean is about 1 zettalitre.

 

Zepto

 

A prefix indicating one thousand billion billionth of something. In numbers it can be written

10-21 or 0.000 000 000 000 000 000 001

For instance, a zeptometre is 10-21 m.

This is a useful measurement when discussing erm... just the question to ask your teacher!

 

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