Optics Forum

Post thread

Threads

Graduate Diffraction tomography, inverse scattering

  • Amartansh
  • · Replies 3 ·
Replies
3

Graduate Blazed Gratings and Littrow Mounting

  • fsonnichsen
  • · Replies 2 ·
Replies
2

Undergrad Using polar coordinates in 1-dimensional problems

  • kent davidge
  • · Replies 3 ·
Replies
3

Graduate Does silicon nitride waveguide need cladding for evanescent field sensing?

  • Sciencestd
  • · Replies 6 ·
Replies
6

Undergrad Refractive index of a prism using a spectrometer

  • VVS2000
  • · Replies 18 ·
Replies
18

High School Object magnified inside a cylinder of water

  • Make it glow art
  • · Replies 20 ·
Replies
20

Graduate Rayleigh scattering formula on a colloidal system

  • FVidal
  • · Replies 2 ·
Replies
2

Graduate The effect of instrumental broadening on FWHM in Raman peaks

  • AVRA
  • · Replies 31 ·
2
Replies
31

Undergrad How was the speed of light measured to such high precision?

  • h1a8
  • · Replies 50 ·
2
Replies
50

Graduate Mode Field Diameter and Penetration depth of the Evanescent field

  • Sciencestd
  • · Replies 3 ·
Replies
3

Undergrad Does the Thickness Affect a Semi-Mirror Spherical Lens' Characteristics?

  • Ozen
  • · Replies 5 ·
Replies
5

Graduate Does the Coriolis force act on the propagation of light?

  • Hepper
  • · Replies 7 ·
Replies
7

Graduate Methods for capturing a Fabry-Perot Interference Pattern

  • undefined314
  • · Replies 2 ·
Replies
2

Undergrad Input/output coupling of a cavity

  • kelly0303
  • · Replies 1 ·
Replies
1

Undergrad How can a single slit diffraction create an interference pattern?

  • lioric
  • · Replies 17 ·
Replies
17

Graduate Sodium Vapor Lamps (low pressure) for spectral calibration and diffraction work

  • fsonnichsen
  • · Replies 9 ·
Replies
9

Undergrad Reflected wave phase at a fixed boundary and superposition principle

  • Kaushik
  • · Replies 1 ·
Replies
1

Undergrad Where does energy go in a homopolar motor with equal voltage and current input and output?

  • John Shillington
  • · Replies 5 ·
Replies
5

Undergrad Selective filter based on angle of incidence?

  • nikosb
  • · Replies 6 ·
Replies
6

High School Sound reflection and concave mirror ray diagram issues

  • Laven
  • · Replies 1 ·
Replies
1

Graduate Why Is My Nd:YAG Laser Beam Quality Deteriorating?

  • shamrock08
  • · Replies 6 ·
Replies
6

Undergrad Why a force perpendicular to the velocity doesn't change the magnitude?

  • Frigus
  • · Replies 46 ·
2
Replies
46

Graduate Drop in intensity when light is focused to a point (telescope mirror)

  • etotheipi
  • · Replies 8 ·
Replies
8

Graduate Why TM/TE coupling asymmetry in rectangular vs circular waveguides

  • tworitdash
  • · Replies 2 ·
Replies
2

Graduate Do Multiple Diffraction Gratings Affect Interference Patterns?

  • KDPhysics
  • · Replies 2 ·
Replies
2

Undergrad Does the Ray Model of Light Apply to Radio Waves and Longer Wavelengths?

  • kent davidge
  • · Replies 12 ·
Replies
12

Graduate Gradient Force of an optical near field

  • Sciencestd
  • · Replies 8 ·
Replies
8

Undergrad Holography used in telecommunications

  • ElectroFractal
  • · Replies 5 ·
Replies
5

Graduate Fourier transform fallacy? (Optics)

  • Jufa
  • · Replies 29 ·
Replies
29

Graduate Normalization constants for TE and TM modes in circular waveguides

  • tworitdash
  • · Replies 2 ·
Replies
2

Graduate Strategy for interference problems

  • etotheipi
  • · Replies 2 ·
Replies
2

Graduate Learn the Fundamentals of the Diffraction Grating Spectrometer

  • Charles Link
  • · Replies 10 ·
Replies
10

Graduate Laser light vs "Regular" Light

  • fog37
  • · Replies 14 ·
Replies
14

Graduate I have a contradiction about refraction

  • Efeguleroglu
  • · Replies 13 ·
Replies
13

Undergrad Why does a transverse wave invert when reflecting at a fixed boundary?

  • constant_puzzlement
  • · Replies 13 ·
Replies
13

Graduate How long does a diffraction pattern take to form?

  • sophiecentaur
  • · Replies 9 ·
Replies
9

Graduate What Causes the Angle-Insensitive Colors in Bird Feathers and Butterfly Wings?

  • Alfred Cann
  • · Replies 6 ·
Replies
6

Graduate How does the Gerchberg-Saxton algorithm recover phase from diffraction patterns?

  • j-lee00
  • · Replies 1 ·
Replies
1

Undergrad What is diffraction grating and how does it work?

  • Greg Bernhardt
  • · Replies 1 ·
Replies
1

Graduate Why does Huygens' principle give only specular reflection on smooth mirrors?

  • etotheipi
  • · Replies 7 ·
Replies
7

Graduate TE and TM modes in optical fibers

  • EmilyRuck
  • · Replies 9 ·
Replies
9

Graduate Can a 1000W laser spot be seen on the new moon with a 16.3 magnitude telescope?

  • lovicodo
  • · Replies 17 ·
Replies
17

High School Why does a coin create a Poisson spot with a laser?

  • Daniel Petka
  • · Replies 5 ·
Replies
5

Graduate Why doesn't interference intensity decrease with distance from the slits?

  • BillKet
  • · Replies 7 ·
Replies
7

Undergrad Does interference require coherent sources or just superposition?

  • Fionn Munnelly
  • · Replies 8 ·
Replies
8

Undergrad Why is there a negative sign in the laser linewidth equation?

  • dziech
  • · Replies 4 ·
Replies
4

Undergrad Refractive index using a traveling microscope

  • Manasan3010
  • · Replies 3 ·
Replies
3

Graduate Diffraction pattern due to a lens with focal length f

  • Optik123
  • · Replies 2 ·
Replies
2

Graduate Airplane flight and the rotation of the Earth

  • deZordine
  • · Replies 25 ·
Replies
25

Graduate How to distinguish elliptically polarized light from partially-polarized light

  • peace
  • · Replies 11 ·
Replies
11

Graduate Does Planck's relation apply to radio waves?

  • Ben DA
  • · Replies 17 ·
Replies
17

Undergrad How do varifocal lens calculations and grinding affect their cost and quality?

  • sophiecentaur
  • · Replies 25 ·
Replies
25

Graduate Is Visible Light Bremsstrahlung Observable in Transparent Mediums?

  • nightvidcole
  • · Replies 6 ·
Replies
6

Undergrad Can an object be halfway between focal point and diverging mirror?

  • Negatratoron
  • · Replies 1 ·
Replies
1

Graduate Is the Fabry-Perot Interference Dependent on Pulse Duration?

  • IcedCoffee
  • · Replies 2 ·
Replies
2

Graduate Difference between "Inverse Scattering" and "Diffraction tomography"?

  • Amartansh
  • · Replies 1 ·
Replies
1

High School Can I read a book with an infrared led light?

  • Noasark
  • · Replies 20 ·
Replies
20

Graduate Rayleigh limit in inverse scattering imaging

  • Amartansh
  • · Replies 1 ·
Replies
1

Undergrad Derivation of single-slit diffraction formula

  • rezaulislam450
  • · Replies 9 ·
Replies
9

Undergrad Propagation of Error for Focal Length

  • Browntown
  • · Replies 2 ·
Replies
2

Graduate Velocity formula in polar coordinates: why multiply by unit vector?

  • n3pix
  • · Replies 6 ·
Replies
6

Undergrad Scattering of Light in Different Media

  • new6ton
  • · Replies 15 ·
Replies
15

Graduate Induced sources and discretization in multiple electromagnetic scattering

  • Amartansh
  • · Replies 2 ·
Replies
2

Undergrad Question regarding the three polarizer paradox

  • SeanHannity
  • · Replies 36 ·
2
Replies
36

Graduate Infrared energy absorption of H20 molecules as a percentage of energy

  • darksat
  • · Replies 2 ·
Replies
2

Graduate Describe the physics of a golf ball flight off the club face

  • papagrande
  • · Replies 3 ·
Replies
3

Undergrad Do raw camera images contain weighted or absolute sensor values?

  • Kamuro
  • · Replies 3 ·
Replies
3

Graduate Linear Polarization Interference: Can It Happen?

  • dazaireta
  • · Replies 2 ·
Replies
2

Graduate Do photons of different energies interact with each other?

  • sqljunkey
  • · Replies 6 ·
Replies
6

Graduate Why does the speed of light change in different media?

  • ColdheartedGod
  • · Replies 4 ·
Replies
4

Undergrad Thought Experiment about light speed

  • Clay Gillespie
  • · Replies 22 ·
Replies
22

Graduate Why does higher PMT gain improve SNR if noise is amplified too?

  • xxfzero
  • · Replies 11 ·
Replies
11

Undergrad How does the surface of a refracting prism become reflective?

  • Browntown
  • · Replies 1 ·
Replies
1

High School An experiment to measure the Speed of Light

  • SapientiaPT
  • · Replies 14 ·
Replies
14

Undergrad Why is the speed of light smaller in a medium?

  • fxdung
  • · Replies 23 ·
Replies
23

Undergrad What is the smallest angle of incidence necessary so that TIR occurs?

  • pkc111
  • · Replies 25 ·
Replies
25

Undergrad How is graded index fiber made ?

  • Aagno3
  • · Replies 2 ·
Replies
2

Graduate Can a photon with energy greater than energy level difference of atom.

  • fxdung
  • · Replies 3 ·
Replies
3

High School Why reflected lamp light changes from blue to purple when rotating calculator screen

  • nuclearfireball_42
  • · Replies 3 ·
Replies
3

Graduate Does 99.995% light absorption mean no EM re-radiation?

  • gmalcolm77
  • · Replies 8 ·
Replies
8

Graduate Running a microwave oven empty

  • icebox
  • · Replies 5 ·
Replies
5

High School Why objects appear smaller as the distance increases?

  • Meruem
  • · Replies 1 ·
Replies
1

High School Could I build a plasma laser from this?

  • Dapperwolf
  • · Replies 14 ·
Replies
14

Graduate XRF, the Auger effect, scattering and noise.

  • zappacake
  • · Replies 1 ·
Replies
1

Undergrad Distance between light source and slits in the double slit

  • sqljunkey
  • · Replies 1 ·
Replies
1

High School Which ray diagram is correct for a Compound microscope?

  • Wrichik Basu
  • · Replies 9 ·
Replies
9

Graduate Derivation about the wave interference

  • christang_1023
  • · Replies 2 ·
Replies
2

Undergrad Light intensity profile along all radial distances

  • XLAYZ
  • · Replies 4 ·
Replies
4

Graduate Shift in wavelength of photons from the Sun using energy argument

  • etotheipi
  • · Replies 3 ·
Replies
3

Undergrad Can a concave mirror correct distortion from a convex reflective surface?

  • Paul Aitken
  • · Replies 1 ·
Replies
1

Graduate Do Fresnel equations apply to monochromatic light at 420 nm?

  • XLAYZ
  • · Replies 2 ·
Replies
2

Undergrad Location of a diffraction pattern

  • shahbaznihal
  • · Replies 9 ·
Replies
9

Graduate Why does light reflect off a mirror at the same angle it arrives?

  • fbs7
  • · Replies 5 ·
Replies
5

High School What is the standard distance for viewing with a microscope?

  • JFS321
  • · Replies 5 ·
Replies
5

Undergrad Calculate Retinal irradiance - from photometric units

  • az32
  • · Replies 10 ·
Replies
10

Graduate Can photons have elliptical polarization and how do superpositions work?

  • planet-75
  • · Replies 23 ·
Replies
23

Undergrad How we see image inside the concave mirror when object is beyond C?

  • Deepak Singh Ola
  • · Replies 2 ·
Replies
2

Undergrad Does speed of light depend on the wavelength or frequency of it?

  • nineteen
  • · Replies 2 ·
Replies
2

Undergrad My Leaking Skylight Peculiarity

  • Puma24
  • · Replies 3 ·
Replies
3

Graduate Does matter exert a Force on Fields (or Light)?

  • bob012345
  • · Replies 9 ·
Replies
9