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Undergrad Does the focal length of a concave lens change in a different medium?

  • Clyner791
  • · Replies 4 ·
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4

Undergrad Images formed by cylindrical lens

  • jadelamlam
  • · Replies 29 ·
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29

Graduate Thomson scattering and unpolarized light

  • Wox
  • · Replies 6 ·
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6

Undergrad Is it possible to store light for later use?

  • edson jair
  • · Replies 7 ·
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7

Undergrad The color of an apple (light absorption and emission)

  • kenewbie
  • · Replies 13 ·
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13

Graduate Interactions between Photons and Atoms in the Electromagnetic Spectrum

  • kenewbie
  • · Replies 2 ·
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2

Undergrad How do optical discs store data and why does sanding destroy mirror reflection?

  • guppster
  • · Replies 3 ·
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3

Graduate Why do REALD 3D glasses show unexpected polarization effects?

  • dgwsoft
  • · Replies 11 ·
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11

Undergrad Gravitational lensing due to earth

  • sodaboy7
  • · Replies 4 ·
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4

Undergrad Lightning/Sparks physics equation

  • agadish
  • · Replies 3 ·
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3

Graduate Infrared Gas Analyzer: How to Accurately Measure Concentration

  • Charles123
  • · Replies 3 ·
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3

Graduate External Cavity Laser: Ultra Narrow Line Width

  • narra
  • · Replies 2 ·
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2

Graduate Why do polarizers reflect light when pitch equals wavelength?

  • Coolcrab
  • · Replies 1 ·
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1

Graduate Slow Light: Can Light Gain Mass and Accelerate?

  • sirchick
  • · Replies 7 ·
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7

Undergrad Why does infrared light produce more heat than visible light?

  • JSGandora
  • · Replies 24 ·
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24

Undergrad Calculating Efficiency of LED Without Plastic Dome

  • Septim
  • · Replies 2 ·
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2

Graduate Thought Expirement: Light In a Mirrored box

  • SilverFlashII
  • · Replies 1 ·
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1

Undergrad Does a spherical wavefront thicken as it moves outwards ?

  • rp1220
  • · Replies 1 ·
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1

Graduate Fiber Optic Y Connection Question

  • Physt
  • · Replies 5 ·
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5

Do i have the ability to see in ultraviolet?

  • skipper1
  • · Replies 7 ·
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7

Undergrad Optical Source Modulation with a Chopper

  • cepheid
  • · Replies 24 ·
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24

Undergrad Absorption and Emission Spectrum

  • physics kiddy
  • · Replies 10 ·
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10

Graduate Intensity of elliptically polarized light

  • Wox
  • · Replies 1 ·
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1

Graduate Smallest diameter collimated laser/optical beam?

  • metalplastic
  • · Replies 1 ·
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1

Graduate Sending communications on light waves

  • Petyab
  • · Replies 3 ·
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3

Graduate Speed of light and bending time

  • dark0fire
  • · Replies 1 ·
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1

Graduate Resolution of points by human eye

  • Cruikshank
  • · Replies 1 ·
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1

Undergrad Young's light interference experiment

  • jaumzaum
  • · Replies 4 ·
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4

High School Can Destructive Interference Completely Silence Music?

  • zabachi
  • · Replies 6 ·
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6

Undergrad Earth Mass Increasing? Photons and Photosynthesis making more matter on earth?

  • nicholasmelas
  • · Replies 33 ·
2
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33

Can light travel faster than itself?

  • InfinateLoop
  • · Replies 70 ·
3
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70

Undergrad Can Perpendicular Waves Interfere When Overlapping?

  • scijeebus
  • · Replies 5 ·
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5

Undergrad Why is Snow White While Water and Ice Are Not?

  • Coolcrab
  • · Replies 13 ·
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13

Undergrad Mirage illusion with concave mirrors: focal length and hole size

  • utkarsh5
  • · Replies 3 ·
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3

Graduate Directing white light photons perpendicular using layered materials

  • SuperFrisbie
  • · Replies 3 ·
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3

Graduate Does Time Influence the Speed of Light in Special Relativity?

  • jluiscool
  • · Replies 1 ·
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1

Graduate Understanding Wave Phase: A0cosϕ = ℜa0eiϕ

  • mps
  • · Replies 2 ·
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2

Graduate Diffraction Across a Knife Edge

  • skeptic2
  • · Replies 4 ·
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4

Undergrad Can Fresnel reflection occur at wavelengths where the material absorbs?

  • AlKindi
  • · Replies 2 ·
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2

Graduate Travelling wave phase difference problem

  • Nabla_101
  • · Replies 4 ·
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4

Undergrad Light sky under primary rainbowwhy?

  • fisico30
  • · Replies 3 ·
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3

Undergrad Glass window for 1550nm laser with minimum reflection and absorption

  • jeic
  • · Replies 1 ·
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1

High School Create Stunning Optics Schemes with Our Software - Perfect for Academics

  • Plantis
  • · Replies 1 ·
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1

Undergrad Light rays exiting mirror during total internal reflection

  • archijun3
  • · Replies 3 ·
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3

Undergrad What happens if Snell's law gives sin θ > 1?

  • MHD93
  • · Replies 2 ·
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2

Graduate Is light what we think of as dark matter?

  • jeik
  • · Replies 2 ·
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2

Graduate Can electron gas reflect gamma rays for spacecraft propulsion?

  • Ryan_m_b
  • · Replies 10 ·
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10

High School Energy and Light: Is it All the Same?

  • jonny512379
  • · Replies 5 ·
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5

Undergrad Youngs double slit experiment.

  • lionel messi.
  • · Replies 2 ·
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2

Undergrad If light is a wave, what is waving?

  • timmyteapot
  • · Replies 77 ·
3
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77

Graduate Vacuum Polarization: Dielectric Possibility?

  • lufc88
  • · Replies 1 ·
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1

Undergrad Can a Grounded Target Evade a Direct Lightning Strike with Sufficient Speed?

  • h1a8
  • · Replies 9 ·
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9

High School Are photons necessary for an object to show colour?

  • Swetasuria
  • · Replies 10 ·
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10

High School Where does light go when i turn off the.light

  • rethipher
  • · Replies 21 ·
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21

Undergrad Optics-Lenses - image outside the mirror?

  • Giuliaa
  • · Replies 3 ·
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3

Undergrad Sub Atomic Particle Sizes (Orders of Magnitude related)

  • Gentle Bren
  • · Replies 15 ·
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15

Undergrad What is the difference between Raman scattering and fluorescence

  • Emmangel
  • · Replies 3 ·
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3

High School Why are microwave waves bad for you?

  • heartyface
  • · Replies 4 ·
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4

Graduate What if photons had mass - would that change relativity?

  • PlanckShift
  • · Replies 7 ·
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7

Graduate Phase change of reflected wave - is there a polarization dependence?

  • jeic
  • · Replies 1 ·
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1

Graduate Refractive index and its effect upon conduction/insulation

  • jester56
  • · Replies 4 ·
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4

Graduate Infinity-corrected optical system

  • Bin Fang
  • · Replies 4 ·
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4

Undergrad Light prapogate as wave or particle?

  • Garvi
  • · Replies 1 ·
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1

Undergrad How are barrel distortion and spherical aberration related?

  • SSJVegetto
  • · Replies 5 ·
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5

Undergrad Why do concave and convex mirrors produce smaller images than plane mirrors?

  • lowellite
  • · Replies 1 ·
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1

Graduate Minimizing blue excitation light in fluorescence spectrometer for oxygen-sensitive dye

  • caa4444
  • · Replies 7 ·
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7

Undergrad Why does angled shallow water cause refraction not reflection?

  • Steve143
  • · Replies 4 ·
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4

Undergrad Directionality of a Laser Beam

  • Septim
  • · Replies 3 ·
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3

Graduate Can a nondispersive material exhibit second-order nonlinearity?

  • b3824855
  • · Replies 6 ·
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6

Undergrad How does light lose energy as it travels over distance?

  • scijeebus
  • · Replies 9 ·
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9

Graduate Microwave interactions with motion sensors

  • Securityman
  • · Replies 7 ·
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7

Undergrad Why are Localized Fringes Curved in a Michelson Interferometer Experiment?

  • spadille
  • · Replies 4 ·
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4

Graduate Why can we see light when looking down a metallic tube? TEM modes can't exist.

  • Kyle91
  • · Replies 9 ·
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9

Undergrad Do Photons Oscillate in Electromagnetic Waves?

  • karen_lorr
  • · Replies 11 ·
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11

Undergrad What Metal Best Emits Infrared Light for Camera Detection?

  • vaano7
  • · Replies 7 ·
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7

Graduate Mie scattering of infinite cylinder (light parallel to axis)

  • protolocke
  • · Replies 1 ·
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1

Graduate Put some light on my concept of light.

  • Zubeen
  • · Replies 1 ·
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1

Graduate Questions about Waves - Answers and Explanations

  • Tosh5457
  • · Replies 3 ·
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3

High School Why does light allow us to see things?

  • RichyB
  • · Replies 16 ·
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16

Undergrad Derivation for magnification equation for convex mirrors

  • 330730358
  • · Replies 9 ·
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9

Undergrad UV light absorption by transparent sheets – how?

  • karen_lorr
  • · Replies 8 ·
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8

Graduate General formula for refractive index of moist air?

  • mikeph
  • · Replies 1 ·
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1

Graduate Solving Optical Microscopy Issues with Vertical Sidewalls of Deep Trenches

  • phymy8
  • · Replies 2 ·
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2

High School Help~total internal reflection

  • jadelamlam
  • · Replies 5 ·
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5

Undergrad Low Cost, High Index of Refraction?

  • ejensen6
  • · Replies 8 ·
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8

Graduate Local Conservation of Energy in Superposition of Mechanical Wave Pulses

  • Smacal1072
  • · Replies 8 ·
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8

High School Does lightening cause a form of cavitation?

  • THORPE
  • · Replies 3 ·
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3

Undergrad Why does light slow down in denser materials and what about its acceleration?

  • CAF123
  • · Replies 4 ·
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4

High School Circuit with 2 batteries when one has a reversed polarity

  • johann1301
  • · Replies 2 ·
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2

Graduate How Does Polarization Affect Capacitor Charge and Potential Difference?

  • aaaa202
  • · Replies 2 ·
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2

High School Hi is light a kind of acceleration? (not velocity or momentum)

  • bhpv
  • · Replies 1 ·
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1

High School Why doesn't light stay in a closed room like water does?

  • strmrkt
  • · Replies 6 ·
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6

High School What propels photons from a light source to the eye?

  • RichyB
  • · Replies 42 ·
2
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42

Undergrad Why does light bend,not just slow down?

  • jadelamlam
  • · Replies 8 ·
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8

High School What are Fresnel's equations?

  • physics love
  • · Replies 5 ·
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5

Graduate Coupled Pendulums - Possible Solutions and Superposition

  • alyosha17
  • · Replies 9 ·
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9

Undergrad Eyeglasses with smallest chromatic abberation

  • mike1127
  • · Replies 18 ·
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18

Undergrad Classical description of laser light?

  • dipole
  • · Replies 1 ·
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1

High School Light dispersion through a window glass

  • fawk3s
  • · Replies 3 ·
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3

Graduate Does Kirchhoff's law relate emissivity and absorption for all radiation?

  • swampwiz
  • · Replies 1 ·
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1