In 1873, Ernst Abbe proposed the famous diffraction limit theory, stating that the resolution of an optical system is limited by the light wavelength ...
The R-OPO fibre sensor enables real-time strain and temperature monitoring over 25 km, enhancing infrastructure safety with high sensitivity and resolution.
National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...