Uploaded August 2024 | Updated September 2026, 1 hour ago

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In this video, we look at nanoparticles. First we explore the relative sizes of particles and look at what is meant by a micrometre and a nanometre. We look at what is meant by coarse particles, fine particles and nanoparticles. We then look at the surface area : volume ratio of particles and use this to explain why nanoparticles are useful. Finally, we explore the potential negative effects of nanoparticles.

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