2021-09-28|Sunatori's Laser on Photochromic Sunglass Lens
Potential Discovery or Invention
When a laser beam from a Focusable 200-250mW 650nm Laser Module Red Dot Laser Generator Diode is shone on a photochromic sunglass lens, nothing happens. However, a laser beam from a more powerful 1000mW Bluish Violet Laser Head Parts 405nm For Engraver DIY Engraving Machine causes the photochromic sunglass lens to change colour.
