Using A Log Table
| Field | Mathamatics |
| Went Obsolete | 1980s to 1990s |
| Made Obsolete By | Pocket calculators with log functions |
| Knowledge Assumed | Understanding of log functions |
| When useful | Calculator batteries are dead or light to low for solar powered calculator |
Not necessarily quite obsolete. I was only yesterday contemplating the implementation of a log table lookup in an XSL template as a quick method of calculating log10(). XSL has no native math functions and the only available implementation, FXSLT, uses extensions which are not available to me.
