- #1
phoebus16
- 5
- 0
Hello everyone,
First of all I am new here and I hope I came to the right place :)
I have been troubled by two observations I have about light, I come into difficulty to find the right words but I will try:
First of all here is a picture that may help:
Observation 1:
With one of my eyes open I look at a pencil eraser (it works with other objects too) at a distance of 25cm, at the background there is a couch at a distance of about 4-5m.
The observation is that when I move another object (lets say a pen cap) very close to my eye then the eraser edge seems to be pulled outwards toward the pen cap while the background couch stays relatively* intact. (view A & B)
Then there is observation 2:
I align my eye sight as much parallel as possible to the tables surface ( the table that the eraser is on ) also near the right edge of the table so that I can use the further corner point of the table as a precise aiming help, to aim exactly at the couches upper edge.
By moving the pen cap in front of my eye towards the couch edge the couch edge seems to be "pressed" downwards ( away from the pen cap ). (view C & D)
I understand that it may be difficult for my post to make sense but I hope that it does as I have great difficulty to explain it in written form in a non mother tongue and a science I have not any worth mentioning knowledge.
I hope someone can understand and help me understand what and why is it happening.
Thanks from now for any help :)
First of all I am new here and I hope I came to the right place :)
I have been troubled by two observations I have about light, I come into difficulty to find the right words but I will try:
First of all here is a picture that may help:
Observation 1:
With one of my eyes open I look at a pencil eraser (it works with other objects too) at a distance of 25cm, at the background there is a couch at a distance of about 4-5m.
The observation is that when I move another object (lets say a pen cap) very close to my eye then the eraser edge seems to be pulled outwards toward the pen cap while the background couch stays relatively* intact. (view A & B)
Then there is observation 2:
I align my eye sight as much parallel as possible to the tables surface ( the table that the eraser is on ) also near the right edge of the table so that I can use the further corner point of the table as a precise aiming help, to aim exactly at the couches upper edge.
By moving the pen cap in front of my eye towards the couch edge the couch edge seems to be "pressed" downwards ( away from the pen cap ). (view C & D)
I understand that it may be difficult for my post to make sense but I hope that it does as I have great difficulty to explain it in written form in a non mother tongue and a science I have not any worth mentioning knowledge.
I hope someone can understand and help me understand what and why is it happening.
Thanks from now for any help :)