English example sentences with "billionth"

I am the seven billionth baby!
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Chilling atoms to within one ten billionth of a degree above 0 Kelvin causes them to slow down significantly, making them easier to study.
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The prefix nano stands for one-billionth, and one-billionth of just about any single thing is way too small for the human eye to see.
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How small is a nanometer? Strictly speaking, it's a billionth of a meter. To put things in perspective, comparing a nanometer to a meter is about the same as comparing a marble to the size of the earth. Weckert, a fellow at Canberra's Centre for Applied Philosophy and Public Ethics, says the reason ethical issues arise is that scientists and the general public are struggling to understand both the benefits and the risks of nanotechnology.
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