Finding the displacement of a object as viewed through water

  • Thread starter Thread starter Krishna0703
  • Start date Start date
  • Tags Tags
    Displacement Water
Click For Summary
To calculate the apparent displacement of an object viewed underwater, the relevant formula involves the refractive index of water. Snell's Law can be used to derive the necessary calculations for determining the new angle and height of the object. A recommended resource provides a detailed explanation of these concepts, making it easier to understand the math involved. The discussion also touches on the practical challenges faced by fishermen when trying to spear fish from a boat. Understanding these principles can enhance the fishing experience and improve accuracy.
Krishna0703
Messages
15
Reaction score
0
hi everybody, suppose we are viewing an object in a pool whereby the object is actually at the bottom of the pool, ...so it will appear as if it has been displaced. what formula can we use to calculate the displacement of the object...??
are there any conditions applicable..help me with this detail please
 
Physics news on Phys.org
Are you a frustrated harpoon fisherman? I have spent ages trying to spear fish from the side of a boat. The Maths is not hard -
http://www.physicstutorials.org/home/optics/refraction-of-light/apparent-depth-real-depth" gives you the formula but it's hard to work it out on the fly and amidst the excitement of a massive Grey Mullett going past.
 
Last edited by a moderator:
nah man, there do have a formula related to the refractive index...
 
It's on that link for you to use at your leisure. The formula gives both the new angle and the new height. But, if you know Snell's Law, you should be able to derive it for yourself. At least, their derivation makes easy sense.

I'll get back to my fishing when my future son in law buys a new harpoon to replace the one he chucked over the side by mistake.
 

Thread 'Mousetrap Car Energy efficiency'

For simple comparison, I think the same thought process can be followed as a block slides down a hill, - for block down hill, simple starting PE of mgh to final max KE 0.5mv^2 - comparing PE1 to max KE2 would result in finding the work friction did through the process. efficiency is just 100*KE2/PE1. If a mousetrap car travels along a flat surface, a starting PE of 0.5 k th^2 can be measured and maximum velocity of the car can also be measured. If energy efficiency is defined by...
View full post »

Similar threads

Force on an object that is stationary in flowing water
  • · Replies 12 ·
Replies
12
Views
7K
Undergrad Work Done/Energy Transferred in One Dimensional Collision
  • · Replies 5 ·
Replies
5
Views
2K
Water Displacement: Floating vs Submerged Objects
  • · Replies 1 ·
Replies
1
Views
4K
Undergrad Drag equation - relative flow velocity
  • · Replies 11 ·
Replies
11
Views
3K
How much weight required to submerge this object?
  • · Replies 7 ·
Replies
7
Views
4K
Measuring the water volume in a small tank with a manometer
  • · Replies 26 ·
Replies
26
Views
2K
Does water displacement theory apply to other liquids?
  • · Replies 2 ·
Replies
2
Views
4K
Why do bubbles of air in water move up?
  • · Replies 13 ·
Replies
13
Views
7K
Undergrad Temporal length vs. Temporal displacement
  • · Replies 10 ·
Replies
10
Views
1K
Calculate new water height in container after adding floating object
  • · Replies 1 ·
Replies
1
Views
8K