English example sentences with "nanometer"

An ångström is smaller than a nanometer.
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A nanometer, or nano, is one-thousand-millionth of a meter. This is about the size of atoms and molecules. Nanotechnologists work with materials this small.
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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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