OCR Text |
Show When Gold Looks Green. Gold can bo beateu out so thiu that it allows light to pass through it, in which case, though it still appears brilliant yellow yel-low by reflected light, it is green as viewed by transmission; that is, by the light that passes through it. This curious effect can easily be observed by laying a piece of gold leaf upon ft plate of glass and holding it between tho eye aud th.s light, when tho gold will npjiear semi-transparent semi-transparent and of u peculiar leek green color. Chambers' J ournal. |