How Can I Improve Readability of White Paper Under Desk Lamp?

  • Thread starter Thread starter flyingpig
  • Start date Start date
  • Tags Tags
    Light Paper
AI Thread Summary
Using a desk lamp can create glare on white paper, making it difficult to read. Polaroid glasses can help reduce this glare by blocking polarized light, improving visibility. Adjusting the angle of the light source relative to the paper can also enhance readability. If the desk lamp is not adjustable, it may be necessary to find a more flexible lighting solution. Proper lighting is essential for comfortable reading and minimizing reflections.
flyingpig
Messages
2,574
Reaction score
1

Homework Statement



Okay, I am using my desk lamp right now to see better when I read, but it's making it more difficult to read because my texts are white sheeted based and it's reflection is making it impossible to read


The Attempt at a Solution



I don't have color filters, so I need a good solution.
 
Physics news on Phys.org
Use Polaroid glasses. Usually reflect lights are polarized. Polaroid gases block that light giving good resolution.
 
Pick up the sheet of paper. You are trying to read something on the paper. There is a line from the eye to the object you are reading and another line from the light source and the object. Adjust the angle between the two lines. This sounds very astract, but actually it is quite easy and the angles are not at all critical. It is a common problem when the desk light is not adjustable and the object to be read has to sit flat on a desk because it is large and heavy. If a desk light is to provide most of the light then it needs to be very adjustable.
Max
 
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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...
Back
Top