| human | Q5 |
| P535 | Find a Grave memorial ID | 208969327 |
| P227 | GND ID | 121696792X |
| P213 | ISNI | 0000000081728677 |
| P244 | Library of Congress authority ID | n81040844 |
| P8189 | National Library of Israel J9U ID | 987007461041005171 |
| P1006 | Nationale Thesaurus voor Auteursnamen ID | 070708231 |
| P214 | VIAF ID | 108145570 |
| P166 | award received | Fellow of the Optical Society | Q7072982 |
| William F. Meggers Award | Q8021013 | ||
| P27 | country of citizenship | United States of America | Q30 |
| P69 | educated at | Johns Hopkins University | Q193727 |
| Friends University | Q284508 | ||
| P108 | employer | Los Alamos National Laboratory | Q379848 |
| P734 | family name | Cowan | Q16166336 |
| Cowan | Q16166336 | ||
| Cowan | Q16166336 | ||
| P735 | given name | Duane | Q3715637 |
| Duane | Q3715637 | ||
| Robert | Q4927937 | ||
| Robert | Q4927937 | ||
| P106 | occupation | physicist | Q169470 |
| P119 | place of burial | Wichita Park Cemetery and Mausoleum | Q113502505 |
| P21 | sex or gender | male | Q6581097 |
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