Help with relationships in equations ΔX/L = λ/d?

  • Context: High School 
  • Thread starter Thread starter totomyl
  • Start date Start date
  • Tags Tags
    Relationships
Click For Summary
SUMMARY

The equation $$\frac{\Delta x}{L} = \frac{\lambda}{d}$$ describes the relationship between the diffraction pattern size (ΔX), distance to the observation screen (L), wavelength (λ), and the size of the aperture (d). In this context, as the aperture size (d) increases, the size of the main diffraction lobe (ΔX) decreases, demonstrating an inverse relationship. Specifically, doubling the aperture size results in halving the diffraction pattern size, while tripling the aperture size reduces it to one-third. This relationship is crucial for understanding wave diffraction phenomena.

PREREQUISITES
  • Understanding of wave diffraction principles
  • Familiarity with basic physics equations
  • Knowledge of wavelength (λ) and its significance in wave behavior
  • Concept of inverse relationships in mathematical equations
NEXT STEPS
  • Study the principles of wave diffraction and its applications in optics
  • Learn about the effects of aperture size on diffraction patterns
  • Explore the mathematical derivation of the diffraction equation $$\frac{\Delta x}{L} = \frac{\lambda}{d}$$
  • Investigate real-world applications of diffraction in technologies such as lasers and imaging systems
USEFUL FOR

Physics students, optical engineers, and anyone interested in understanding wave behavior and diffraction patterns in various contexts.

totomyl
Messages
15
Reaction score
1
Can someone explain to me the relationships with this equation (and probably any other equation). For example i don't fully understand how the ΔX is inversely related to the d. I have an idea of how this is so, however i can't really picture it with numbers. If you could explain the relationships and how they work that would be nice ty.
 
Physics news on Phys.org
What context is this in? What does the equation describe?
 
totomyl said:
Can someone explain to me the relationships with this equation (and probably any other equation). For example i don't fully understand how the ΔX is inversely related to the d.
The equation in the thread title (which should be here in your post) is
$$\frac{\Delta x}{L} = \frac{\lambda}{d}$$
I'm assuming that L and ##\lambda## are constants in this equation.
If you double d, the result is that ##\Delta x## is halved. If you triple d, ##\Delta## becomes 1/3 of its former value. That's what inversely related means.
totomyl said:
I have an idea of how this is so, however i can't really picture it with numbers. If you could explain the relationships and how they work that would be nice ty.
 
My guess is that a plane wave of wavelength lambda impinges on a opaque screen with a hole of size d. The outgoing diffraction pattern has an angle of about lamda/d. Another screen , at L meters from the first one (really far), is used to observe the diffraction pattern. delta_x is the approximate size of the main diffraction lobe.
I'd like to see the original context
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
1K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 32 ·
2
Replies
32
Views
1K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
3
Views
2K
Replies
2
Views
5K
  • · Replies 1 ·
Replies
1
Views
1K