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Undergrad Can a photon of light become a radio wave?

  • nick978
  • · Replies 5 ·
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5

Graduate Do virtual photons explain this phenomenon?

  • Prashan Shan
  • · Replies 19 ·
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19

Graduate Computer Simulation of Fresnel Diffraction

  • ecastro
  • · Replies 3 ·
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3

High School Why does light slow down in a medium?

  • professorscot
  • · Replies 45 ·
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45

Undergrad Two hologram halves brought together

  • trendal
  • · Replies 6 ·
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6

High School Can a telescope see cars and people 10 light-years away as they were 10 years ago?

  • RandyD123
  • · Replies 1 ·
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1

Undergrad Slight rearrangement of Newton's Law

  • Timothy S
  • · Replies 2 ·
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2

Undergrad Sound Interference on a speaker

  • Willjeezy
  • · Replies 2 ·
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2

Undergrad Huygens principle at the boundary of a volume

  • Ulises
  • · Replies 2 ·
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2

Graduate How Do Longer UV Wavelengths Penetrate Deeper into Photopolymers?

  • sdhpg
  • · Replies 1 ·
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1

Undergrad Why does a laser through a slit create that diffraction pattern?

  • member 529879
  • · Replies 4 ·
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4

Graduate Crossed polarizers and F-Stop relationship

  • scientific601
  • · Replies 1 ·
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1

Undergrad Optics - Imaging from focal plane

  • Wminus
  • · Replies 1 ·
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1

High School Odd Blinding blue light blinded me and 2 others - What is it

  • Taaw
  • · Replies 12 ·
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12

Graduate Powell Lens Equations for Gaussian to Flat Top Beam Conversion

  • sgn
  • · Replies 5 ·
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5

High School Understanding Angular Spread: A Brief Explanation

  • PhysicsKid0123
  • · Replies 4 ·
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4

Undergrad Is Bragg Diffraction Depicted Accurately in Common Diagrams?

  • 2sin54
  • · Replies 3 ·
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3

Undergrad Which reflector shape makes sound waves parallel?

  • Dr.MIke
  • · Replies 20 ·
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20

Graduate Photon Energy Stimulation of Atoms

  • Mit-hat
  • · Replies 5 ·
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5

Undergrad How Does Focal Length Affect Image Formation on the Retina?

  • Bengo
  • · Replies 7 ·
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7

Undergrad Why Does the Index of Refraction Vary by Light Color in Different Mediums?

  • member 529879
  • · Replies 2 ·
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2

Undergrad Why is light assigned a velocity as a fundamental property?

  • Giles OBrien
  • · Replies 3 ·
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3

Graduate Accuracy of an Optical Spectrum Analyzer (OSA)

  • zambadeos
  • · Replies 5 ·
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5

Graduate Photon Rocket vs Conventional Propellant Rocket

  • sanman
  • · Replies 4 ·
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4

Undergrad Is a virtual image of one mirror a virtual object for another mirror?

  • gracy
  • · Replies 8 ·
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8

Undergrad What are optical cavities used for in practice?

  • Istruggle
  • · Replies 8 ·
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8

High School Have I Labeled 1/f=1/u+1/v Correctly?

  • gracy
  • · Replies 4 ·
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4

Undergrad Bounce light back and forth between mirrors forever?

  • hxtasy
  • · Replies 4 ·
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4

High School Center of Curvature: PhysicsClassroom.com

  • gracy
  • · Replies 9 ·
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9

High School Object Distance for Mirrors versus Lenses

  • C. Long
  • · Replies 4 ·
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4

Graduate Calculating optical properties of an arbitrary gas?

  • Artlav
  • · Replies 3 ·
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3

Graduate What is the relationship between light and time?

  • blinding
  • · Replies 2 ·
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2

Graduate Do parallel mirrors keep accelerating away from each other?

  • unlimitedbacon
  • · Replies 9 ·
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9

Graduate Diffraction effects in slit experiments

  • sgn
  • · Replies 1 ·
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1

High School Can I Reach the End of a Rainbow with a Shovel?

  • Tristanthompson
  • · Replies 9 ·
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9

Undergrad Lightning vs Hydrogen Fuel for Space Travel

  • HawkI
  • · Replies 9 ·
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9

Undergrad Why Are 488nm LED Options Hard to Find for Cell Sorting?

  • SupaVillain
  • · Replies 4 ·
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4

Undergrad Light Bending: Why Don't Waves Bend at Normal Incidence?

  • SAJAN MUHAMMAD
  • · Replies 3 ·
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3

Undergrad Does the speed of light remain constant in an expanding universe?

  • Swetha.M.L
  • · Replies 4 ·
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4

Graduate Lock-in detection with fast optical pump-probe spectroscopy on semiconductors

  • alanwake90
  • · Replies 5 ·
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5

Graduate IR LED irradiance, radiant exposure and radiance

  • gloria
  • · Replies 1 ·
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1

Graduate Modeling Converging Spherical Waves in Optics

  • Wminus
  • · Replies 3 ·
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3

High School What physical objects are within 299,000 km of Earth?

  • shounakbhatta
  • · Replies 6 ·
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6

Undergrad Central peak width in single-slit diffraction with 650 nm vs 450 nm wavelength

  • dreaan
  • · Replies 14 ·
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14

Undergrad How do water waves and light waves propagate in different directions?

  • chris2112
  • · Replies 2 ·
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2

High School Wavelength of light in relation to speed

  • mrbearing
  • · Replies 11 ·
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11

Undergrad How to convert the intensity of light of a star

  • Padrepapp
  • · Replies 3 ·
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3

Undergrad Regarding Polarizer and viewing sun

  • Sab95
  • · Replies 3 ·
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3

Graduate Sunlight Intensity Concentrator - Idea to boost solar energy

  • mnmman
  • · Replies 24 ·
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24

Graduate Can we generate and emit 50-100 petahertz radiation?

  • Henke47
  • · Replies 2 ·
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2

Graduate Coupling Xe Arc Lamp into Fiber Bundle

  • Padrepapp
  • · Replies 6 ·
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6

High School Why does light refract toward the normal

  • physdoc
  • · Replies 10 ·
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10

Undergrad Constructive interference and energy conservation

  • Wminus
  • · Replies 10 ·
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10

Undergrad Why are spider webs nearly invisible from most angles?

  • Voodoo doodler
  • · Replies 1 ·
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1

Undergrad How shape of pattern affects the behaviour of light

  • nicolauslamsiu
  • · Replies 3 ·
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3

Graduate Ray Tracing - Optics - Bend light with circular lenses

  • johanns
  • · Replies 3 ·
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3

Undergrad Confusion regarding Interference of light

  • Sab95
  • · Replies 6 ·
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6

Undergrad Light Refraction on the Surface of a Sphere

  • C. C.
  • · Replies 3 ·
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3

High School Red/Blue laser intencity Youngs double slit experiment?

  • CAH
  • · Replies 1 ·
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1

High School What is a laser field?

  • Misha Kuznetsov
  • · Replies 6 ·
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6

Graduate Circular polarization and Read3D glasses

  • barryj
  • · Replies 2 ·
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2

Graduate Acceptable Band Pass for a Monochromator?

  • Habeebe
  • · Replies 1 ·
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1

Undergrad Why do our eyes need to be far from the lens to view a real image?

  • SplinterCell
  • · Replies 7 ·
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7

Undergrad Why won't an optical adder using laser intensity levels work?

  • 010101
  • · Replies 5 ·
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5

Undergrad Does light reach every single part of space?

  • marcgrissz
  • · Replies 23 ·
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23

Graduate (laser ablation) what is difference between plume and plasma?

  • payam
  • · Replies 1 ·
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1

High School Low tech telecommunications (light)

  • Vir27
  • · Replies 24 ·
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24

Graduate How Does Light-Matter Interaction Challenge Classical and Quantum Views?

  • modulus
  • · Replies 7 ·
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7

High School What is the squiggly thing over B

  • shanepitts
  • · Replies 1 ·
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1

Graduate How to Figure Required Telescope Diameter?

  • willgtl
  • · Replies 1 ·
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1

Undergrad Diffraction grating with high intensity in first order

  • abbas_majidi
  • · Replies 1 ·
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1

Undergrad Why is a point light source required for Schlieren Photograph?

  • daved31415
  • · Replies 3 ·
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3

Undergrad Optics cornu spiral and diffraction

  • lazytofindname
  • · Replies 1 ·
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1

Undergrad How does light move in a vacuum?

  • quincy harman
  • · Replies 2 ·
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2

Graduate Is polarised light a result of destructive interference?

  • Jilang
  • · Replies 8 ·
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8

Graduate Magnification through a lens at various diameters

  • Ken Van Cleave
  • · Replies 1 ·
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1

Undergrad Sinusoidal path of light video

  • Puma
  • · Replies 4 ·
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4

Graduate Would photon emitters work as transmitting antennas?

  • Edward Wij
  • · Replies 6 ·
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6

High School Black Lights and plain CFL and Cancer?

  • Jesse44
  • · Replies 6 ·
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6

Graduate Spatial Light Modulators and Fourier Optics

  • Qiao
  • · Replies 4 ·
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4

Graduate Photons emitted between energy levels?

  • CAH
  • · Replies 2 ·
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2

Undergrad Where is fringe spacing measured from with white light?

  • CAH
  • · Replies 1 ·
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1

Undergrad Why Can't We See Diffraction from Metal Surfaces?

  • brianeyes88677
  • · Replies 4 ·
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4

High School Can Coherent Light Waves Interfere with Each Other?

  • Dipto
  • · Replies 5 ·
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5

Undergrad How would you convert visible light to infrared or microwave

  • ejnovek
  • · Replies 3 ·
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3

Undergrad Determining the brightness on a projected surface

  • Gbollag
  • · Replies 2 ·
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2

Undergrad Reflectivity of a water drop at different wavelengths

  • swgold
  • · Replies 1 ·
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1

Undergrad Why do metals reflect EM waves while antennas absorb them?

  • ugenetic
  • · Replies 9 ·
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9

Undergrad Fibre optics and multipath disspersion

  • ryanuser
  • · Replies 3 ·
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3

Undergrad Concentrating sunlight to accomplish projection (Art project)

  • Gabrielk
  • · Replies 4 ·
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4

Graduate Quantifying Observational Error in FWHM Measurements of Optical Signals

  • TadyZ
  • · Replies 12 ·
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12

Undergrad Why laser beam interference setup shows no fringe patterns

  • Lauri
  • · Replies 8 ·
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8

High School Prism -- brightness of a ray of white light as it passes through a prism?

  • Judoliam
  • · Replies 4 ·
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4

Graduate Stoke parameters and incoherent light

  • Wminus
  • · Replies 4 ·
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4

Graduate Infrared spectroscopy to find water absorption lines

  • bertopolis
  • · Replies 5 ·
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5

Graduate What will happen if light is longitudinal wave?

  • MRzNone
  • · Replies 18 ·
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18

Undergrad What are the advantages of graphene light bulbs?

  • atyy
  • · Replies 6 ·
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6

Graduate Why does parallel light focus on the focal plane at angle θ through a thin lens?

  • brianeyes88677
  • · Replies 3 ·
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3

Undergrad Rutherford Scattering model geometry

  • thegirl
  • · Replies 2 ·
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2

High School Calculating the distance between the optical center and focal length

  • stevepham
  • · Replies 1 ·
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1