原子
手でふれられるものはすべて原子でできていて、どの原子も同じ三種類の粒子でできています。水素からカルシウムまでの原子を3Dで組み立て、それぞれの粒子の数が原子の種類をどう決めるのかを見てみましょう。
進み具合
このコースの出典 (10)
- IUPAC periodic table (iupac.org/what-we-do/periodic-table-of-elements)
- NIST Atomic Weights and Isotopic Compositions (physics.nist.gov/cgi-bin/Compositions/stand_alone.pl, elements H, C, Cl, Br)
- NIST CODATA 2022 proton-electron mass ratio (physics.nist.gov/cgi-bin/cuu/Value?mpsme)
- NIST radiometric dating note, carbon-14 half-life 5,730 years (nist.gov/image-19154)
- APS News: discovery of the electron 1897 (aps.org/apsnews/2000/10/discovery-of-the-electron)
- Fermilab timeline (fnal.gov/pub/inquiring/timeline/02.html)
- APS News: Rutherford and the atomic nucleus 1911 (aps.org/apsnews/2006/05/rutherford-discovery-atomic-nucleus)
- APS News: Bohr model 1913 (aps.org/apsnews/2012/03/bohr-model-atom-rutherford)
- APS News: Chadwick and the neutron 1932 (aps.org/apsnews/2007/05/may-1932-chadwick-discovery-neutron)
- NobelPrize.org James Chadwick biography.
確認日: 2026-10-17