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Undergrad How does Wavefront technology used in optics work?

  • ikandi
  • · Replies 2 ·
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2

Undergrad Why do Newton Rings Form in Circular Patterns?

  • FizixFreak
  • · Replies 2 ·
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2

Undergrad Why does long wavelength infrared not penetrate glass?

  • quantum123
  • · Replies 5 ·
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5

Undergrad Do diagonal waves pass through wire-grid polarizers?

  • Particle-Wave
  • · Replies 3 ·
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3

Graduate Derivation of Snell's law from Huygens' principle

  • moderate
  • · Replies 7 ·
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7

Graduate How does low-frequency electro-optic modulation change permittivity?

  • karlzr
  • · Replies 2 ·
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2

High School Mobile 'Lights': Impact on Signal Strength?

  • PanCerowany
  • · Replies 2 ·
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2

Undergrad Why did a 240V 500W bulb stop burning in a 230V 300W lamp?

  • fawk3s
  • · Replies 1 ·
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1

Graduate What Initiates the Propagation of Light in Maxwell's Equations?

  • stringbean
  • · Replies 2 ·
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2

Graduate Force carrier particles i.e. gravitons, photons

  • FeDeX_LaTeX
  • · Replies 3 ·
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3

Undergrad Does skin perpendicular to sun’s rays burn faster than if not perpendicular?

  • DaveN123
  • · Replies 13 ·
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13

Mobile phone user hit by lightning

  • Tribulus
  • · Replies 6 ·
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6

Undergrad Why can black holes pull in light if photons have no mass?

  • anthonych414
  • · Replies 1 ·
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1

Graduate Calculating Photon Count from Xenon-Arc Lamp

  • randomstuff2k
  • · Replies 1 ·
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1

Graduate How can a Fresnel zone plate be implemented on a curved surface?

  • HEM87
  • · Replies 10 ·
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10

High School Question on young's double experiment

  • SAINATHAN
  • · Replies 2 ·
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2

Graduate Light can't travel at the speed of light?

  • FeDeX_LaTeX
  • · Replies 47 ·
2
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47

Graduate Designing a Holographic Projector with Sound and Laser

  • Torakunsama
  • · Replies 4 ·
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4

Undergrad Do photons really bounce and bend? A question for physicists

  • curioso
  • · Replies 4 ·
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4

Graduate Negative permittivity of metals

  • krindik
  • · Replies 10 ·
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10

Graduate Why does light reflect off a water surface if there is no critical angle?

  • fluidistic
  • · Replies 7 ·
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7

Graduate Can We Turn the Universe Into Photons?

  • cragar
  • · Replies 2 ·
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2

High School Why does glass refract and reflect light?

  • bartelbe
  • · Replies 15 ·
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15

High School Why are reflections blurry for myopic people even when the mirror surface is in focus?

  • joriarty
  • · Replies 3 ·
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3

Undergrad Spectroscopy via diffraction gratings with different spacings

  • quantumkiko
  • · Replies 2 ·
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2

Graduate Understanding Wave Dispersion & Group Velocity: Help Needed!

  • samreen
  • · Replies 1 ·
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1

High School Thickness of lens and its focal length

  • wlkks
  • · Replies 1 ·
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1

High School Is Light a Wave or Something More?

  • Mad_Eye
  • · Replies 8 ·
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8

Undergrad Changing Visible Light into IR and then back

  • T.O.E Dream
  • · Replies 1 ·
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1

Undergrad Can X-Ray Ionisation Affect Non-Metals and Gases?

  • Russell_B
  • · Replies 7 ·
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7

High School Why can I hear through walls but not see through them?

  • americanforest
  • · Replies 20 ·
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20

Undergrad What determines whether a surface reflects or absorbs light?

  • Sea Cow
  • · Replies 3 ·
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3

Undergrad About polar vectors and pseudo vectors

  • manjuvenamma
  • · Replies 10 ·
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10

Undergrad Speed Of Light and Gravitational Force

  • GravityNutt
  • · Replies 4 ·
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4

High School Why do waves spread in circles after passing through a small gap?

  • Knight_ever
  • · Replies 4 ·
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4

Undergrad Can the light from a rotating bike wheel bend outside of the column?

  • cragar
  • · Replies 10 ·
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10

High School Difference between refraction and diffraction in waves?

  • dervast
  • · Replies 15 ·
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15

Undergrad What does the negative sign mean in the microscope magnification equation?

  • Audaciity
  • · Replies 1 ·
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1

Undergrad Do Color Chords Exist in Light Similar to Sound?

  • quozzy
  • · Replies 6 ·
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6

A gadget I dont know the name of

  • fawk3s
  • · Replies 7 ·
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7

Graduate What is the physical meaning of negative c?

  • renerob
  • · Replies 3 ·
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3

Graduate Incandescence or Luminescence: How Do They Differ?

  • mmoverman
  • · Replies 4 ·
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4

Undergrad Questions re: absorption spectrum

  • Mike_UK
  • · Replies 1 ·
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1

High School Units of brightness and applying the inverse square law

  • zeromodz
  • · Replies 2 ·
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2

Undergrad How to know phase difference will be of a light wave entering a thin film?

  • fairtrade55
  • · Replies 1 ·
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1

Undergrad Why are light waves from 2 separate light bulbs incoherent?

  • fantasizeme
  • · Replies 5 ·
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5

Undergrad Are There REALLY Infinite Colours?

  • FeDeX_LaTeX
  • · Replies 15 ·
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15

Graduate Can superfluid helium 4 seep through glass, and do photons propagate like electron waves?

  • cragar
  • · Replies 4 ·
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4

Graduate Understanding X-ray Attenuation: Determining Absorption Probability and Depth

  • RichardOsmond
  • · Replies 2 ·
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2

High School Why do materials absorb and reflect different wavelengths of light?

  • FeDeX_LaTeX
  • · Replies 2 ·
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2

Graduate How can I exist if photons experience infinite time instantly?

  • mcjosep
  • · Replies 8 ·
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8

High School I want to know that light has mass or not.

  • YOOKUNG
  • · Replies 23 ·
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23

Undergrad Can we 'feel' magnitudes of distant forces?

  • bhauta
  • · Replies 1 ·
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1

Undergrad What Happens to the Energy in Destructive Wave Interference?

  • waynet
  • · Replies 39 ·
2
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39

Undergrad Reversed spectrum through prism?

  • Debstar
  • · Replies 15 ·
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15

Undergrad Software for simulating light reflection in a solar heliostat

  • Nuke STEEL
  • · Replies 1 ·
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1

Graduate Gas Laser: Stimulated Emission and Positive Ions

  • vin300
  • · Replies 1 ·
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1

Undergrad Magnitude of acceleration on a ramp

  • OME9A
  • · Replies 13 ·
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13

High School Does light have a definite shape?

  • physixlover
  • · Replies 37 ·
2
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37

Undergrad How do two ocean waves combine to create monster waves?

  • Norgat
  • · Replies 3 ·
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3

Undergrad What Is Photonics and How Does It Involve Manipulating Photons?

  • jwxie
  • · Replies 1 ·
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1

High School The Speed of Light: Physics and Possibilities

  • clm321
  • · Replies 4 ·
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4

Undergrad How do Photons Reach the Speed of Light?

  • sk3ptic76
  • · Replies 39 ·
2
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39

Graduate Why does concentrated dye reflect its complementary color?

  • tiredryan
  • · Replies 2 ·
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2

Graduate Is Solar Sail Propulsion Feasible with Photonic Laser Thrusters?

  • Lsos
  • · Replies 22 ·
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22

High School Reading a book in the infrared

  • Deep_Spacing
  • · Replies 3 ·
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3

Graduate How do I generate a diffraction pattern using FFT from a single slit?

  • py_engineer
  • · Replies 5 ·
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5

Graduate Gaussian beam passing through a circular aperture

  • yoni3468
  • · Replies 2 ·
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2

Graduate If gravity bends light, doesn't that mean photons have mass?

  • Tregg Smith
  • · Replies 8 ·
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8

Undergrad Light travel at different speeds in different medium

  • hbal9604@usyd
  • · Replies 1 ·
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1

Graduate Chromatic Dispersion, and Variability of Refractive Index on Wavelength

  • hbal9604@usyd
  • · Replies 5 ·
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5

Undergrad Is critical angle diagram realistic?

  • bhauta
  • · Replies 9 ·
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9

Undergrad What would be the force on a beam of particles from focused sunlight?

  • DWM91
  • · Replies 15 ·
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15

Graduate Diffraction of a circular aperture

  • KFC
  • · Replies 2 ·
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2

Graduate Understanding Fourier Optics: From Spatial to Temporal Transformations

  • KFC
  • · Replies 5 ·
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5

Undergrad How Does Lens Shape Affect Focal Lengths?

  • sskk221
  • · Replies 1 ·
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1

High School Why is Light in a Sine Wave Form?

  • physixer
  • · Replies 23 ·
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23

High School Can Two Lasers Overlap and Create a Single Point of Light?

  • tomc
  • · Replies 3 ·
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3

Undergrad Why is my negative di value giving the wrong side for the image in the thin lens formula?

  • luysion
  • · Replies 1 ·
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1

Undergrad Perceptual color difference metrics for sRGB values

  • CRGreathouse
  • · Replies 4 ·
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4

High School How Many Lumens Are Needed to See a Flashing LED at 500 Meters?

  • Shnuk
  • · Replies 6 ·
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6

High School Where to find a chart of refractive indices for many materials

  • mcjosep
  • · Replies 2 ·
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2

Undergrad Photonics Resources for Undergraduate Students

  • Cydrus
  • · Replies 2 ·
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2

High School How do X-rays work and what do antero-posterior views show?

  • sameeralord
  • · Replies 19 ·
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19

Undergrad Magnitude and Attenuation in Fields subject

  • cppgraphics
  • · Replies 6 ·
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6

High School Why Is Putting Metal in a Microwave Dangerous?

  • MonstersFromTheId
  • · Replies 15 ·
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15

Graduate S11 (scattering parameter 11) of a Resonator?

  • H_man
  • · Replies 2 ·
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2

High School Young's double slit experiment (shallow slit and deep slit)

  • kevinfr0st
  • · Replies 4 ·
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4

High School RealD Glasses and the polarized effect.

  • Codfish
  • · Replies 2 ·
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2

Undergrad Compton Scattering Using Newtonian Physics

  • rpardo
  • · Replies 3 ·
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3

Graduate Energy <-> Mass conversion and visible light

  • nevenante
  • · Replies 7 ·
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7

Graduate Conceptual difficulty with FP Resonator

  • H_man
  • · Replies 2 ·
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2

Graduate Photons and gravitational field

  • cragar
  • · Replies 2 ·
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2

Undergrad Why is the bending of waves related to wavelength?

  • triac
  • · Replies 2 ·
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2

Graduate Is it possible to make a gravity mirror ?

  • pef
  • · Replies 1 ·
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1

Undergrad Negative Focal Length and Convex Mirrors: Is 1/di Negative?

  • luysion
  • · Replies 1 ·
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1

High School What is the difference between mixed light and pure light?

  • Artlav
  • · Replies 2 ·
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2

High School Can you cook a marshmallow with a magnifying glass safely?

  • Dav333
  • · Replies 2 ·
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2

Graduate Coupling 470 nm LED light into multimode optical fiber

  • gstuber
  • · Replies 1 ·
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1

High School Ray Diagrams: 2nd Incidence Ray - Which Is Correct?

  • luysion
  • · Replies 1 ·
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1