 | C. C. Lauritsen and R. D. Bennet in the Caltech High Voltage Testing Laboratory at the control board of the high-voltage x-ray tube Lauritsen later redesigned as a particle accelerator. |
| C. C. Lauritsen and R. D. Bennet in the Caltech High Voltage Testing Laboratory at the control board of the high-voltage x-ray tube Lauritsen later redesigned as a particle accelerator. |