Tag: laundry

  • National Science Week 2021 – Science in the laundry

    National Science Week 2021 –  Science in the laundry

    How did people make their shirts so bright? Q. In the days when state of the art laundries all featured coppers, mangles and cement tubs, just how did people make those shirts so bright. A. They used an optical brightener – Reckitt’s Starch. The science: Optical brighteners absorb energy from ultra-violet light. This energy ‘pushes’ some […]