@SFOMuseum Twitter Posts This is SFO Museum's archive of the @SFOMuseum Twitter account.
loading image
German physician & physicist Hermann von Helmholtz made important contributions to a variety of scientific fields: he invented the ophthalmoscope in 1851, which is still used to inspect the interior of the eye, as well as acoustic instruments, such as these resonators. . This tweet was posted on January 03, 2022.