An animated sequence that illustrates a range of different light sources. The Sun, fire, electric lights and torches are all shown. Darkness is presented as the absence of light and shadows as ...

[Alex] built what he calls a light to sound converter. It reacts differently depending on the type of light: remote controls, light bulbs, TV screens, etc. A photodiode is used with an amplifier ...

a POSTECH research team made a breakthrough with a cutting-edge technology combining light and sound. The research is published in the journal Advanced Science. To solve this, the POSTECH research ...

To throw light on the matter ... and is responsible for the “gear change” sound of many electric trains. We’re particularly taken by the sound of some German and Austrian locomotives ...