Maybe in a similar mode, but I may be thinking of the "slow glass" stories. They were about a type of glass that took 20 years for light to pass through. In the stories, it would be a used in a window but into the past, usually with some tragedy involved. Who says that 1950s "hard" science fiction stories couldn't be a tearjerkers?
Not that I remember, but it’s a great idea for one!
Maybe in a similar mode, but I may be thinking of the "slow glass" stories. They were about a type of glass that took 20 years for light to pass through. In the stories, it would be a used in a window but into the past, usually with some tragedy involved. Who says that 1950s "hard" science fiction stories couldn't be a tearjerkers?