A time sequence (second of two) showing a one quarter inch aluminum plate being melted in about fifteen seconds by the focused sun's energy..., 04/1974.
| Uploaded by | U.S. National Archives |
|---|---|
| License | No known copyright restrictions |
| Comments | 0 |
| Favorites | 3 |
| Views | 7,202 |
| Date taken | 1974-04 |
| Date uploaded | 2012-04-10 |
| Tags | usnationalarchives, documerica, environmentalprotectionagency, boydnorton, nara:arcid=555375 |
| Visibility | public |