- Versions of the international System of Units | 0, 0, 1
- International System of Units | 47, 768, 28
- System of units | 0, 768, 30
- Physics | 276, 46k, 835
- Natural science | 0, 62k, 2k
- Science | 0, 67k, 2k
- Ciro Santilli's Homepage | 262, 222k, 4k
- Electronvolt | 25
- Elementary charge | 34, 288, 2
- Kilogram | 47, 52, 1
- Planck constant | 163, 195, 1