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| author |  Peter McGoron
| 2021-08-13 17:26:49 -0400 |
|---|---|---|
| committer | Peter McGoron
| 2021-08-13 17:30:37 -0400 |
| commit | b70511f47b585105b5d49734de56ac04361d4682 (patch) | |
| tree | 85b0970ea81663010ca521628c7da94a637aa85d /.gitignore | |
| parent | Use lowercase for all element names and symbols (diff) | |
store NULL when an element's discovery year is "Ancient"
The only elements that do not have a discovery year are those that
have been known for about as long as we have historical records.
It is highly unlikely that we will discover a new element that will
not have a definite year of discovery, so NULL can be used to refer
to elements so old nobody knows who discovered it first.
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