One possibility is that it was put on the paper with lemon juice. You would have to put the paper near a flame (not to the point of igniting it) in order to bring out the image.
An image cannot be seen on a plain piece of paper because paper lacks the capacity to emit light or store visual information like a screen or photograph. Paper simply reflects ambient light, so without any ink or pigments applied to it in a specific pattern, it appears blank.
Paper is not a good reflector of light due to its rough and irregular surface, which causes light to scatter in different directions instead of reflecting back in a focused manner like a mirror. This scattering of light results in a blurry and distorted reflection that makes it difficult to see a clear image.
A rough piece of paper would give a distorted and fragmented reflection due to its uneven and irregular surface, making it difficult to see a clear or detailed image.
Yes. That's a good quick way to determine whether or not a real image exists. You can also use a piece of thin tissue paper, kleenex, or toilet paper, and see the image from the other side. Put a piece of photosensitive material there at the real image, and you get a permanent photo.
you cant
Because unlike in a mirror, the light does not bounce off the paper, but it is absorbed. People use paper to write because the absorbed light contrasts with the graphite of the pencil, making it easy to adjust to, or read the literature.
Print Screen -> Save as image -> Print image voila
with your eyes.
no you cant see image its appers in waves
If you didn't do anything special to be recognized in the paper, then of course you won't see your face in it. You won't be in it!
because it is folded
You can see your face in a mirror because it reflects light, creating a clear image. Paper diffuses light, so it scatters the reflection and does not create a clear image like a mirror does.