The Minnesota Department of Transportation has installed clear noise-barrier walls in two locations along freeways. The plastic sheets block the sound as effectively as conventional wooden walls ...

Researchers at the University of Cambridge and the University of Queensland have created the HappyShield, an origami face shield that is made by folding a sheet of clear plastic. By folding along ...

Japanese designer Tokujin Yoshioka has created a quick and easy face shield for healthcare workers fighting Covid-19, which attaches to the wearer's glasses. Yoshioka's template design can be used ...

PVC is the key material used in samples No. 5 to 7. The total transmittance spectra indicate film samples with a transmittance of around 90% at long wavelengths above 400 nm. The sheet samples were ...