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Graduate Eigenvectors of the Permittivity Tensor in Periodic Dielectrics

  • sph711
  • · Replies 2 ·
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2

Undergrad Using a ruled grating as a Fresnel compact reflector for imaging

  • nikosb
  • · Replies 3 ·
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3

Undergrad It's still not clear to me what's the limit of light propagation

  • lordoftheselands
  • · Replies 6 ·
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6

High School Any examples of naturally occurring holograms?

  • Mr Green T
  • · Replies 16 ·
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16

High School List of Verdet Constants?

  • KShah423
  • · Replies 3 ·
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3

Undergrad Viewing 1k x 1k slab of desert sand during extreme cold/hot temps?

  • ndvcxk123
  • · Replies 7 ·
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7

Undergrad How Can I Build an Effective DIY Helmet-Mounted HUD?

  • xxtop
  • · Replies 19 ·
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19

High School Can Lasers Really Create a Functional Light Saber?

  • pete94857
  • · Replies 1 ·
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1

Graduate Ansys FDTD simulation for phase change due to reflection

  • tanhanhbi
  • · Replies 0 ·
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0

High School Using the Moon to reflect sunlight onto a solar sail

  • justcurious33
  • · Replies 21 ·
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21

Undergrad Interference of two ultra short laser pulses

  • Mubeen
  • · Replies 15 ·
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15

Undergrad Prism Spectrometer Objective: Optics Question

  • doofus
  • · Replies 9 ·
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9

Undergrad How to narrow a beam to 1 mm diameter?

  • Quant
  • · Replies 1 ·
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1

High School Questions about the Paraxial region for a single spherical surface

  • difalcojr
  • · Replies 24 ·
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24

Graduate Collimation of a Gaussian beam

  • Mubeen
  • · Replies 8 ·
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8

Undergrad Factors that influence depth of field

  • Oldhouse
  • · Replies 77 ·
3
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77

Undergrad Questions about a Laser Interferometer pattern

  • snuz2001
  • · Replies 2 ·
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2

Undergrad Density fluctuations and the color of the sky

  • pines-demon
  • · Replies 0 ·
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0

Undergrad Why was a HAM radio license required to operate early lasers?

  • shea
  • · Replies 8 ·
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8

Graduate Fourier Optics: Why a Plane Wave contributes to just a single point

  • Daniel Petka
  • · Replies 13 ·
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13

Undergrad Will cooling or heating a pair of binoculars change the transmitted image?

  • ndvcxk123
  • · Replies 3 ·
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3

Undergrad Permittivity (epsilon) change via temperature + optics effect?

  • ndvcxk123
  • · Replies 3 ·
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3

Undergrad Microring resonator matrix

  • Rampart123
  • · Replies 3 ·
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3

High School Mirror phenomenon — Concentric halos around eyes in a foggy bathroom

  • aliasz
  • · Replies 55 ·
2
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55

High School Why does light diffraction create circular patterns?

  • abrahamabraham
  • · Replies 5 ·
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5

High School How would someone see light from something like a flashlight in a tunnel?

  • AI_Messiah
  • · Replies 6 ·
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6

Undergrad Where to Find In-Depth Resources on the Physics of CDs/DVDs?

  • shea
  • · Replies 9 ·
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9

High School Did Thomas Young Misinterpret His Double Slit Experiment Results?

  • elou
  • · Replies 34 ·
2
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34

High School Horizon and Curvature Observations

  • DaveC426913
  • · Replies 23 ·
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23

Undergrad Laser and nano-holes experiment

  • James_AA
  • · Replies 3 ·
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3

Undergrad Measure the transmission curve and wavelengths of colored mineral glass

  • MR v
  • · Replies 5 ·
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5

High School How to build a simple polarization filter

  • elou
  • · Replies 11 ·
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11

High School Why can't light rays be seen in a lit space before a mirror?

  • elou
  • · Replies 64 ·
3
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64

High School How to Troubleshoot a Lens Focusing Issue with a DIY DSLR Lens

  • S15
  • · Replies 10 ·
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10

Undergrad What Are Co-Phasal Wave Fronts in Fizeau Interferometry?

  • Ahmed123
  • · Replies 7 ·
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7

High School Explanation for bright fringes in Single Slit Diffraction

  • Aurelius120
  • · Replies 4 ·
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4

Undergrad Dispersion Relation in Different Media

  • deuteron
  • · Replies 3 ·
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3

Undergrad Why Are Reflected Rays Often Ignored in Lens Studies?

  • E3Phy
  • · Replies 5 ·
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5

Undergrad Lumens and actual power of luminous flux

  • sophiecentaur
  • · Replies 16 ·
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16

Undergrad Single-Slit Diffraction -- Deriving the relation for the minima

  • Clemencio
  • · Replies 8 ·
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8

Graduate Can someone explain this statement on luminous transmittance?

  • Rap
  • · Replies 9 ·
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9

Undergrad What travels faster: visible light in water or X-rays in liquid mercury?

  • Dante Meira
  • · Replies 6 ·
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6

High School Why is there a second black ring in Pfund's method with water on the Petri Dish?

  • ace
  • · Replies 11 ·
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11

Undergrad Does a Fabry Perot cavity charge in discrete steps?

  • Daniel Petka
  • · Replies 12 ·
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12

Graduate Mach Zehnder Interferometer Interference fringes issue

  • tanhanhbi
  • · Replies 10 ·
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10

Graduate Simulating collecting efficency of a LiDAR

  • NielsW
  • · Replies 2 ·
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2

Graduate Does a spectrometer need a lens to focus collimated light on entrance slits?

  • phi_skr
  • · Replies 12 ·
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12

Undergrad Geometry of Cherenkov radiation

  • AndreasC
  • · Replies 4 ·
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4

High School What would reversed corrective lenses show about untreated myopia?

  • Flyboy
  • · Replies 5 ·
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5

Graduate About collimation in Czerny-Turner spectrometers

  • Rigelleo
  • · Replies 1 ·
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1

Undergrad How to improve the accuracy of Young's double slit experiment?

  • Jason Ko
  • · Replies 11 ·
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11

Undergrad Calculating the Raleigh Criterion constant to 99 significant figures

  • Jenab2
  • · Replies 3 ·
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3

Undergrad Identifying antique optics device with pivoting mirror and lens windows

  • whig
  • · Replies 6 ·
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6

Undergrad How to calculate incident light on surface with multiple orientations?

  • Jman99
  • · Replies 1 ·
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1

Undergrad Does coherent two-photon lidar increase range or measurement precision?

  • dansmith170
  • · Replies 1 ·
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1

Undergrad Lens Calculations to Focus Light

  • AxisCat
  • · Replies 10 ·
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10

Undergrad How does our brain differentiate between a source of light and a painted circle?

  • Trying2Learn
  • · Replies 9 ·
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9

Undergrad What website/software can draw optics setups like this?

  • SmartHu
  • · Replies 1 ·
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1

Undergrad Making LED bulbs safer: Health and LEDs

  • renault
  • · Replies 72 ·
3
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72

Undergrad Radiant Intensity from Radiant Power and Intensity Distribution

  • InTheWorks
  • · Replies 17 ·
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17

Graduate Diffraction theory, power density and angle of incidence

  • kagestodder
  • · Replies 5 ·
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5

Undergrad Finding an integrating sphere with angled ports for diffuse reflectance

  • aferrie
  • · Replies 2 ·
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2

Undergrad Measuring reflectance of insect specimens with an integrating sphere

  • aferrie
  • · Replies 6 ·
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6

Undergrad Creating a wavelength selectable light source with diffraction grating

  • opticsnerd123
  • · Replies 2 ·
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2

Undergrad What happens if I place light sources on the plane perpendicular to the principle axis of cylindrical lens?

  • Tony_Stark
  • · Replies 1 ·
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1

Undergrad How to find the orientation of polarization of a polarizer

  • boxfullofvacuumtubes
  • · Replies 6 ·
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6

Undergrad Can n-slit interference produce subwavelength stripes?

  • genxium
  • · Replies 6 ·
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6

High School (Huygens) Irving Giant Pinhole variation: Extend it with a 70 mm tube?

  • ndvcxk123
  • · Replies 4 ·
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4

Undergrad How Does Diffraction Influence Shadows and Optical Observations?

  • Hak
  • · Replies 3 ·
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3

Undergrad Optical Effect: curved light source when seen through the bus window

  • Marth
  • · Replies 5 ·
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5

Undergrad Can an Aspheric Lens Narrow the FOV for Motion Detection Systems?

  • Tone L
  • · Replies 1 ·
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1

Undergrad How is IR ink able to be seen with specialized filters?

  • Gerome
  • · Replies 3 ·
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3

Undergrad Can I Use Additional Wavelengths for a More Advanced Hue Calculation?

  • Physics_Dave
  • · Replies 19 ·
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19

Undergrad Applications for negative radiation pressure?

  • JD23
  • · Replies 49 ·
2
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49

Undergrad Optical pumping vs Rabi cycle - what is the difference between their conditions?

  • JD23
  • · Replies 5 ·
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5

High School Huygens Question - Using a Pinhole Box in the Giant Pinhole Irvine

  • ndvcxk123
  • · Replies 70 ·
3
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70

Undergrad How different is a calcite crystal from a polarizer?

  • Frigorifico9
  • · Replies 3 ·
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3

Undergrad Deriving reflection, refraction, and Snell's law from basic physics

  • Ahmed1029
  • · Replies 23 ·
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23

Undergrad How Do Different Wavefront Shapes Appear to the Human Eye?

  • JasmineMasown
  • · Replies 28 ·
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28

Graduate Define the polarization in TE/TM modes

  • Dimani4
  • · Replies 4 ·
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4

High School Radio waves -- Tissue Refractive Index

  • roxyboy
  • · Replies 33 ·
2
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33

Undergrad Sine laws of spherical singlets

  • difalcojr
  • · Replies 72 ·
3
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72

Graduate Looking for trigonometric ray tracing software for optics

  • difalcojr
  • · Replies 22 ·
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22

Graduate Spherical aberration in Biconvex lens

  • VVS2000
  • · Replies 9 ·
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9

Graduate Calculating the optical depth of an inhomogeous gas

  • colorofeternity
  • · Replies 1 ·
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1

Undergrad Sagnac Interferometer (Fiber Gyro)

  • Voltux
  • · Replies 1 ·
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1

Undergrad Automatic double lens glasses?

  • LightningInAJar
  • · Replies 3 ·
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3

Undergrad My spectacles defy the laws of physics

  • Steve4Physics
  • · Replies 13 ·
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13

Undergrad Tilted plane wave through a 2 lens system

  • Skaiserollz89
  • · Replies 5 ·
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5

Graduate Stimulated emission/absorption - which equations act on external targets?

  • JD23
  • · Replies 2 ·
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2

High School Can sunglasses fully protect against UV sensitivity?

  • DaveC426913
  • · Replies 7 ·
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7

High School Scattering of light by dust particles

  • Pushoam
  • · Replies 4 ·
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4

Undergrad Why does stimulated emission preserve wavelength, phase and direction?

  • RobbyQ
  • · Replies 1 ·
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1

High School Why are light waves depicted as lines, circles, and sinusoids?

  • Themberchaud
  • · Replies 18 ·
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18

High School How to draw reflected wavefronts with a protractor

  • Physical_Fire
  • · Replies 9 ·
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9

High School Can Ultrason E 3010 polymer be used for fiber optics?

  • hagopbul
  • · Replies 2 ·
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2

High School Scattering of light inside a room

  • Pushoam
  • · Replies 22 ·
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22

Graduate How is it possible to measure an IR LED source in mW/sr?

  • Valentin
  • · Replies 16 ·
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16

Undergrad How to Measure Magnification of a Lens System with Liquid Surface

  • HomeTinker
  • · Replies 40 ·
2
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40

Undergrad What would be at the center of a circular rainbow if we could see ultraviolet wavelengths?

  • Trying2Learn
  • · Replies 19 ·
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19