How Small Is an Atom? Atom Size Comparison | NuclearVerse Ep 02

Just how small is an atom? In NuclearVerse Episode 02 we shrink by powers of ten, from your height to your palm, a fingernail, a grain of sand, a human hair, red blood cells, viruses and DNA, until we reach a single atom. Then we dive into the nucleus, measured in femtometres, and find out why no ordinary light microscope can ever show you an atom. Animated and beginner-friendly, made for anyone curious about how the universe works at its smallest scale. ⚛️ A new NuclearVerse episode every day. Subscribe to AtomX:    / @atomx-2   Subscribe so you never miss tomorrow's episode. ⏱️ Chapters 00:00 How small is an atom? 00:20 Powers of ten: metre to millimetre 00:44 A human hair and red blood cells (micrometres) 01:07 Viruses and DNA (nanometres) 01:32 Arriving at the atom: the ångström 02:01 How many atoms across one hair? 02:22 Molecules in a single drop of water 02:52 Into the nucleus: femtometres 03:15 The marble and the city 03:40 Why we can't see atoms with light 04:01 Next: Can we see an atom? 📚 What you'll learn • Powers of ten and the units µm, nm, Å, pm and fm • Hair ≈ 50–100 µm, red blood cell ≈ 7–8 µm, virus ≈ 20–300 nm, DNA ≈ 2 nm • A typical atom is about 0.1–0.3 nm (1–3 Å) across • Roughly 300,000–500,000 atoms fit across one hair • One drop of water holds about 10²¹ molecules • Nuclei are about 1–15 fm, and an atom is 10,000–100,000 times wider than its nucleus • Why visible light (400–700 nm) is far too coarse to show an atom Previous episode: What Is Everything Made Of? (NuclearVerse Ep 01) Next episode: Can We See an Atom? 🔔 Subscribe to AtomX for the full NuclearVerse series, a new episode every day. Comment the topic you want next! #NuclearVerse #AtomX #NuclearPhysics #Atoms #Physics #Science #QuantumPhysics ▶️ Watch the full NuclearVerse series in order:    • NuclearVerse: Nuclear Physics Explained   📚 Helpful for Class 11 & Class 12 Physics, IIT JEE and NEET preparation. #Class11Physics #Class12Physics #IITJEE #NEET 📲 Follow AtomX: X https://x.com/AtomX_universe · Telegram https://t.me/AtomX_2