SF story a few years back on "slow glass." You put sheets of this stuff out in a national park for a few years, or in the Grand Canyon, or other picturesque spot, and you had the image engraved over time IN the glass. You could then mount the glass in your living room window, and have several years of a simulated view of said beauty from your easychair. (I guess the downside was that after a few years, your neighbors would have years worth of pictures of you watching TV in your shorts and eating Cheese Poofs.)I think I read the same story.....
Wasn't it called "memory glass" or something? The protagonist kept seeing a women holding a baby come to a window of a house, and it turned out the woman had died long before? I don't remember the plot, but I remember a few details. And I remember that I very much liked the story. Iggy