- #1
mainguy
- 15
- 0
So here's a mystery one of you may be able to solve.
I noticed that the reflection of light from the fingerprints on my iPhone screen depend on it's orientation toward a light source.
For instance, use your finger to make two perpendicular smudges across the screen. You'll find that the smudge which is parallel to the light from the source (suppose its a bulb of light) will reflect light readily, while the smudge perpendicular to the rays from the source will just show up black.
Really unsure of what's going on here, thoughts?
I noticed that the reflection of light from the fingerprints on my iPhone screen depend on it's orientation toward a light source.
For instance, use your finger to make two perpendicular smudges across the screen. You'll find that the smudge which is parallel to the light from the source (suppose its a bulb of light) will reflect light readily, while the smudge perpendicular to the rays from the source will just show up black.
Really unsure of what's going on here, thoughts?