Optics Forum

Post thread
Undergrad Calculating the Raleigh Criterion constant to 99 significant figures
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Need Help Identifying Old Optic Device
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Lens Calculations to Focus Light
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad What website/software can draw optics setups like this?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Diffraction theory, power density and angle of incidence
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Help with sourcing a specific type of integrating sphere
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Measuring reflectance of a non-planar object w/ an integrating sphere
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Creating a wavelength selectable light source with diffraction grating
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad What happens if I place light sources on the plane perpendicular to the principle axis of cylindrical lens?
  • · Replies 1 ·
Replies
1
Views
2K
How to find the orientation of polarization of a polarizer
  • · Replies 6 ·
Replies
6
Views
6K
Undergrad Can n-slit interference produce subwavelength stripes?
  • · Replies 6 ·
Replies
6
Views
2K
High School (Huygens) Irving Giant Pinhole variation: Extend it with a 70 mm tube?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad How Does Diffraction Influence Shadows and Optical Observations?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Optical Effect: curved light source when seen through the bus window
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Can an Aspheric Lens Narrow the FOV for Motion Detection Systems?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad How is IR ink able to be seen with specialized filters?
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Can I Use Additional Wavelengths for a More Advanced Hue Calculation?
  • · Replies 19 ·
Replies
19
Views
3K
Undergrad Optical pumping vs Rabi cycle - what is the difference between their conditions?
  • · Replies 5 ·
Replies
5
Views
3K
High School Huygens Question - Using a Pinhole Box in the Giant Pinhole Irvine
  • · Replies 70 ·
3
Replies
70
Views
6K
Undergrad How different is a calcite crystal from a polarizer?
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Reflection, refraction, and Snell's law
  • · Replies 23 ·
Replies
23
Views
4K
Undergrad How Do Different Wavefront Shapes Appear to the Human Eye?
  • · Replies 28 ·
Replies
28
Views
3K
Define the polarization in TE/TM modes
  • · Replies 4 ·
Replies
4
Views
18K
Undergrad Sine laws of spherical singlets
  • · Replies 72 ·
3
Replies
72
Views
6K
Looking for trigonometric ray tracing software for optics
  • · Replies 22 ·
Replies
22
Views
3K
Graduate Spherical aberration in Biconvex lens
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Calculating the optical depth of an inhomogeous gas
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Sagnac Interferometer (Fiber Gyro)
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Automatic double lens glasses?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad My spectacles defy the laws of physics
  • · Replies 13 ·
Replies
13
Views
2K
Undergrad Tilted plane wave through a 2 lens system
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Stimulated emission/absorption - which equations act on external targets?
  • · Replies 2 ·
Replies
2
Views
2K
High School Scattering of light by dust particles
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Stimulated Emission & Emitted photon direction
  • · Replies 1 ·
Replies
1
Views
2K
High School Why are light waves depicted as lines, circles, and sinusoids?
  • · Replies 18 ·
Replies
18
Views
4K
High School Is this material is good for fiber optics and who would buy it?
  • · Replies 2 ·
Replies
2
Views
2K
High School Scattering of light inside a room
  • · Replies 22 ·
Replies
22
Views
3K
Graduate How is it possible to measure an IR LED source in mW/sr?
  • · Replies 16 ·
Replies
16
Views
4K
Undergrad How to Measure Magnification of a Lens System with Liquid Surface
  • · Replies 40 ·
2
Replies
40
Views
5K
Graduate What exactly is deconvolution doing?
  • · Replies 13 ·
Replies
13
Views
3K
Undergrad Questions About Bragg's Law of X-Ray Diffraction
  • · Replies 54 ·
2
Replies
54
Views
10K
Undergrad 2mm x 2mm mirror array construction - can you help?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Optics: infinite light source illusion question - can you help?
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad Photodetector Output & Refractive Index of FO Cladding/Coating
  • · Replies 1 ·
Replies
1
Views
2K
High School Does light propagate as a wave of little bullets?
  • · Replies 34 ·
2
Replies
34
Views
3K
Undergrad May I treat the light from a star as a light beam?
  • · Replies 11 ·
Replies
11
Views
3K
Light Transmission Through Half-Hollow Sphere
  • · Replies 5 ·
Replies
5
Views
2K
High School Does light ever go from the eye to the image?
  • · Replies 17 ·
Replies
17
Views
3K
High School Shouldn't the refracted ray be along the boundary here?
  • · Replies 5 ·
Replies
5
Views
2K
High School Shape of Lenses -- Why are they always circular?
  • · Replies 12 ·
Replies
12
Views
3K
Undergrad Why do we use low-coherence light in Optical Coherence Tomography?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad How Does Light Remain After Polarization Despite Changes in Its Electric Field?
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad Light Refraction, Biconvex Lens, Diagram Help
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Four-way beamsplitter implementation
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Outer layer refractive index - total internal refection on waveguide
  • · Replies 2 ·
Replies
2
Views
2K
High School A cone of photons from one (of many seen objects) hits the retina....
  • · Replies 25 ·
Replies
25
Views
3K
Undergrad How Do Photons Display Particle/Wave Duality in Optical Imaging?
  • · Replies 12 ·
Replies
12
Views
2K
Undergrad Applications of Virtual objects
  • · Replies 9 ·
Replies
9
Views
4K
Undergrad The kinetic energy of proton-electron for a black body
  • · Replies 8 ·
Replies
8
Views
2K
High School What Keeps Photons Traveling Across the Galaxy?
  • · Replies 13 ·
Replies
13
Views
2K
Graduate Fourier optics model of a 4f system
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Grating Resolving Power of Laser Beams with Gaussian Distribution
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Class debate: Everything we see is a result of reflected light
  • · Replies 18 ·
Replies
18
Views
3K
Undergrad William Herschel's light experiment
  • · Replies 15 ·
Replies
15
Views
3K
Undergrad Issues collimating my laser with 4f system
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad Expose a Hidden Message w/ Polarisation Filters
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Mirror rotates any polarisation by 90°?
  • · Replies 6 ·
Replies
6
Views
4K
Undergrad Paraxial ray tracing: fixing image/height w/o knowing stop location
  • · Replies 3 ·
Replies
3
Views
2K
Trying to Understand the Polarization of light
  • · Replies 6 ·
Replies
6
Views
14K
Undergrad Why does a spyglass or binoculars zoom in?
  • · Replies 17 ·
Replies
17
Views
3K
Undergrad How to calculate focal length?
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad How does an eye reconstruct an image?
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad Light coupling from optical fiber to glass?
  • · Replies 25 ·
Replies
25
Views
4K
High School Discover the Best Microscope for Sperm Cell Observation | AMScope M158C-E
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Interesting Optical Phenomenon
  • · Replies 3 ·
Replies
3
Views
2K
High School Geometrical Optics: Explaining the Effects of Small Wavelengths
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How to compute phase gradient from Snell's law?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Minimum light bulb wattage for solar simulator
  • · Replies 11 ·
Replies
11
Views
4K
Undergrad Plane wave decomposition method in scalar optics
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad What is the angle of the Sun on June 21 & Dec 21 at US Zip Code 37129?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Diffraction from a set of concentric rings with random phase
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Deciphering the Symbolic Shapes in Fundus Images: A Question on their Meaning
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Image appears outside of q -- Lens Maker's Equation confusion
  • · Replies 17 ·
Replies
17
Views
3K
Understanding Reflection of Light on a Concave Mirror
  • · Replies 172 ·
6
Replies
172
Views
20K
Undergrad Lost Aspheric Lens Design Equation Found
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Scattering and non-imaging optics
  • · Replies 15 ·
Replies
15
Views
3K
Undergrad Difference between Working distance and object distance
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Total focal length and magnification
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad What Determines the Speed and Clarity of Signals in Wave Physics?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad How can I derive this relation from Snell's law?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Light coupling in fiber optic cables
  • · Replies 22 ·
Replies
22
Views
4K
Graduate Iphone Reflection has a pattern
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Validity of Fresnel Approximation
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Using simple lenses to image AFM Probes
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Investigating a 3D Color Hue Phenomenon with Blender and Just Color Picker
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Doubts about Fourier transform of IR spectroscopy
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Huge farsightedness/nearsightedness lens
  • · Replies 10 ·
Replies
10
Views
2K
High School What does "1 diopter of astigmatism" mean?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Why do we always see interference pattern in Michelson interferometer?
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad Focusing UV light from a 275nm LED down to a small spot
  • · Replies 10 ·
Replies
10
Views
3K