Gold-based passive heating for eyewear Date: December 12, 2022 Source: ETH Zurich Summary: Researchers have developed a new transparent gold nanocoating that harnesses sunlight to heat the lenses ...

Those are gold numbers ... The rest of the numbers on the field will remain white. The league is also dropping Roman numerals for this Super Bowl, which simply will be Super Bowl 50.

Scientists at the University of Houston have created a gold nanomesh material that is conductive, transparent and flexible – a combination that they claim has never before been achieved.

This makes a one-way window that is matte – it looks opaque, reflecting barely 1 per cent of light from the outside – but still transparent ... such as gold, and materials like silicon ...