The Upside Down World - Is It Real?

  • Thread starter Thread starter .:superfry:.
  • Start date Start date
AI Thread Summary
The discussion explores the concept of perception, specifically how the human brain interprets visual information. It highlights that while images are projected upside down on the retina, the brain corrects this to create an upright perception of the world. The original poster expresses confusion about the implications of this phenomenon, questioning if it suggests an "upside down" reality. Additionally, there is criticism of the physics teacher's dismissive response to the inquiry. Overall, the conversation emphasizes the complexity of visual perception and the importance of engaging with such questions.
.:superfry:.
Messages
1
Reaction score
0
i was just thinking...and its probably totally wrong...but I've asked my physics teacher and she's just like..."next question please"...
if our eyes see things upside down but our brain interprets them the right way up (or is that just in babies??)...but yer if our eyes n brains do that...does that mean that really the world is like upside down or something and like in stead of gravity going downwards its really going ^^^ or like or its still going down but becasuse the world is upside down its realli going up?? i don't know i confuse my self! :confused:
but yer just wondering...and sorry if that didnt make any sense at all!
 
Physics news on Phys.org
Welcome to PF

the world is prefectly like what you see, upright. But when the image is formed on your retina, it is upside down, just that our brain is able to interpret it correctly, that's all. BTW when light(the image) passes throught the lens of your eye, the light is twisted upside down and hence image form on your retina is upside down.

OFF TOPIC : your teacher shouldn't really snub you like that, what a unprofessional teacher you have.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...

Similar threads

Back
Top