Luminescent wristwatch. Man wearing an old wristwatch with hands covered in luminescent radium paint. Radium paint is a radioactive material that glows in the dark,making it easy to read the time on the watch at night | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Public Health England |
Bildgröße: | 5104 px × 3543 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |