Devilish Yulia, I'm really sorry about your grandpa.
I wonder if those things are real.. but that's a picture taken by a normal camera.. How can you photograph a "memory" or some kind of energy?
If you use ultra light or infra light then maybe it will show up, but does that exist on those old cameras? 'Cause these pictures seem kind of old. And no, I don't know anything about cameras.