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Graduate Experimentally measure the degree of circular polarization

  • metatrons
  • · Replies 6 ·
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6

Undergrad Color through a prism on black and white surfaces.

  • Liam W.
  • · Replies 9 ·
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9

Graduate Generalization of Fresnel Equations?

  • Abtinnn
  • · Replies 4 ·
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4

Graduate Does light slowly spread out longitudinally?

  • Ponderer
  • · Replies 28 ·
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28

Graduate Does Fermat's principle ever give the longest time?

  • hideelo
  • · Replies 20 ·
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20

Graduate Feynman's Missing Equation in his Lectures(Optics)

  • Thecla
  • · Replies 2 ·
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2

High School Compound Microscope: Focal Length of Objective Lens vs Eye Piece

  • Avaron Cooper
  • · Replies 2 ·
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2

High School Infinite Plane Telescope's View of Faraway Person

  • Ravilochana das
  • · Replies 11 ·
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11

Graduate Can a microwave carry more energy than a gamma-ray wave?

  • Gerinski
  • · Replies 4 ·
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4

Undergrad Uncertainty in focal length from lens equation with measurement errors

  • hexathane
  • · Replies 1 ·
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1

Graduate How Do Microwaves Create Plasma by Separating Atoms into Ions and Electrons?

  • Misha Kuznetsov
  • · Replies 5 ·
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5

Graduate Light through a tube - Solid Angle (Oblique Cone)

  • Sachin Vaidya
  • · Replies 1 ·
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1

Undergrad (i,j) notation of orders of wave vector

  • PBJ
  • · Replies 1 ·
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1

Graduate Which theory explains behavior of photon?

  • Christian Grey
  • · Replies 1 ·
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1

High School What is the longest wave-lenght of a photon?

  • meyol99
  • · Replies 11 ·
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11

Undergrad Does the Doppler effect differ between sound and light?

  • Amr Elsayed
  • · Replies 7 ·
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7

Graduate Frequency Components of a Lightning Strike

  • dreens
  • · Replies 2 ·
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2

High School Can light reflect off air and what would it look like?

  • Malaxus
  • · Replies 4 ·
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4

High School Why can a camera take a picture with half its lens covered?

  • Dixanadu
  • · Replies 8 ·
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8

Undergrad Projecting 3D mid-air images and videos without a holographic screen

  • Malaxus
  • · Replies 5 ·
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5

High School Do ferrous metals become polarized when attached to mag?

  • radaballer
  • · Replies 1 ·
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1

Undergrad Why does a wave reflect with unchanged polarity at a free end?

  • kelvin490
  • · Replies 3 ·
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3

Graduate How does polarization change when EM waves reflect off arbitrary objects?

  • Xyius
  • · Replies 2 ·
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2

Undergrad The Physics Behind Fluorescent Lamps

  • avito009
  • · Replies 1 ·
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1

Graduate Why does lightning follow a zigzag path through air?

  • Jeff Rosenbury
  • · Replies 44 ·
2
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44

Graduate Emission spectrum changes with microscope objective?

  • Yinxiao Li
  • · Replies 14 ·
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14

Undergrad Closed loop problem for lighting in thunderstorm?

  • goodphy
  • · Replies 4 ·
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4

Undergrad Anamorphic and Spherical Lens Focusing

  • artiswar
  • · Replies 8 ·
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8

Undergrad What is a Dichromatic Prism and How Does it Work?

  • Roodles01
  • · Replies 1 ·
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1

High School What does seeing an object really mean?

  • avito009
  • · Replies 4 ·
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4

Undergrad Can I Create a Visible Light Pattern Using a Combination of Laser Beam and LED?

  • DannySmythe
  • · Replies 2 ·
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2

High School Is the Mass of Light Constant?

  • jeevesh
  • · Replies 5 ·
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5

Undergrad Absorption and emission of light

  • member 529879
  • · Replies 15 ·
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15

Graduate How quickly do changes in fundamental forces propagate?

  • jeevesh
  • · Replies 3 ·
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3

Graduate What is the difference between zero and multiple quarter wave plates?

  • abbas_majidi
  • · Replies 2 ·
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2

Graduate Do Particles at LHC Travel Near Light Speed?

  • Benplace
  • · Replies 3 ·
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3

Undergrad Do light waves experience wave inversion after striking a mirror?

  • Danyon
  • · Replies 2 ·
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2

High School Why is glass transparent?

  • Alex299792458
  • · Replies 6 ·
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6

Undergrad What is saturation in terms of wavelength?

  • 1832vin
  • · Replies 13 ·
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13

Undergrad How does a light wave change when travelling from water to air?

  • misterc
  • · Replies 4 ·
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4

Graduate Which theory or field can explain this?

  • Christian Grey
  • · Replies 1 ·
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1

Graduate Parallel light rays through a sprial wave plate diverge?

  • Spinnor
  • · Replies 3 ·
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3

High School Relation Between Computers, Light and Pi

  • Joshua Morris
  • · Replies 7 ·
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7

Undergrad Single slit diffraction confusion

  • adi1998
  • · Replies 2 ·
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2

Undergrad UVA/UVB Light: Why does UVA penetrate deeper into the skin?

  • finnch
  • · Replies 1 ·
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1

Graduate Relativity: Massless particles and photons

  • sunmoon
  • · Replies 5 ·
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5

Graduate Where Can I Find Diodes for Line-Shaped Beams in Soft X-Ray Experiments?

  • SAXSIST
  • · Replies 3 ·
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3

Graduate Why does the photon have no mass?

  • Lone Voice
  • · Replies 14 ·
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14

Undergrad Where Can I Find Free Software for Caustics/Cusps?

  • dmacbeath
  • · Replies 1 ·
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1

Graduate Angular Spectrum Method and Fourier Transform

  • ecastro
  • · Replies 11 ·
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11

Undergrad What is the name of this equation? Seems to be from Optics

  • ecastro
  • · Replies 25 ·
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25

High School Laser Polarization: Learn Why Polarizers are Used

  • pori moni
  • · Replies 1 ·
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1

Undergrad What limits the speed of light in a vacuum with no gravity?

  • hagar
  • · Replies 20 ·
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20

Graduate Arbitrarily changing EM fields and their photons

  • rumborak
  • · Replies 9 ·
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9

Graduate Do photon emissions increase the Sun's gravity by compressing it?

  • Charlie Daubitz
  • · Replies 1 ·
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1

Undergrad How do you explain this? (Optics)

  • asmani
  • · Replies 1 ·
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1

Graduate What is an optical straight line (photon path)?

  • pbierre
  • · Replies 13 ·
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13

Undergrad About polarization and polarizer

  • KFC
  • · Replies 4 ·
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4

Graduate Is a Photon Really Its Own Antiparticle?

  • exmarine
  • · Replies 9 ·
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9

Graduate Does light curve toward ordered

  • Pjpic
  • · Replies 5 ·
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5

Undergrad Do Photons Have Mass? Physics Forums FAQ

  • Suraj Nehra
  • · Replies 1 ·
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1

High School Would you see the stars in the day if blue were filtered?

  • Vriska
  • · Replies 7 ·
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7

Graduate Sonoluminescence using microwaves?

  • infinitrode
  • · Replies 1 ·
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1

Undergrad Optics problem --- absorbtion index

  • marcis
  • · Replies 4 ·
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4

Graduate Speed of light depending on gravitational constant?

  • SpiderET
  • · Replies 4 ·
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4

Graduate Is there a good classical description of a photon?

  • watinc
  • · Replies 8 ·
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8

High School Why is visible light not harmful?

  • Invutil
  • · Replies 10 ·
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10

Graduate Derive parameters from transform matrix

  • lock042
  • · Replies 7 ·
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7

Undergrad Understanding How Camera Detectors Work - CCD vs. CMOS Sensors

  • ephen wilb
  • · Replies 2 ·
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2

Graduate Fresnel Relations and the Sensitivity of a Camera

  • ecastro
  • · Replies 2 ·
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2

High School Which causes an object to become invisible, regular or diffused?

  • pmostafa
  • · Replies 3 ·
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3

Graduate Is Light a Particle or a Wave According to Planck's Theory?

  • Bashyboy
  • · Replies 3 ·
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3

Graduate Aperture stop for an optical system

  • fog37
  • · Replies 1 ·
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1

Undergrad Photons striking a camera sensor?

  • Ralf66
  • · Replies 2 ·
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2

High School Photon Standing Wave Phenomenon

  • HawkI
  • · Replies 11 ·
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11

Undergrad Calculating Critical Angle: Relative vs. Absolute Refractive Index

  • Samurai44
  • · Replies 3 ·
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3

Undergrad Minimal lens setup for grating spectral imaging

  • houlahound
  • · Replies 1 ·
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1

Graduate Is there space between photons in a light stream?

  • Deepak K Kapur
  • · Replies 2 ·
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2

Graduate Fabry Perot Free Spectral Range

  • marco1235
  • · Replies 4 ·
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4

Graduate How do photons interact with electrons in transparent materials?

  • JFS321
  • · Replies 5 ·
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5

Graduate Is there a medium in which sound travels faster than light?

  • Kyuutoryuu
  • · Replies 30 ·
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High School Why do different objects have different colors?

  • Basip
  • · Replies 6 ·
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6

Graduate How do two light beams combine at a shear angle?

  • stedwards
  • · Replies 9 ·
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9

Graduate Does light bend due to gravitational tides?

  • newjerseyrunner
  • · Replies 3 ·
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3

Undergrad How do speed laser guns differentiate between two cars?

  • RadPhi
  • · Replies 4 ·
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4

High School What causes the secondary set in a quadruple rainbow?

  • OmCheeto
  • · Replies 6 ·
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6

High School Is comunication faster that light possible: yes( maybe )

  • amateur physic
  • · Replies 2 ·
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2

Undergrad Speed of sound and light through different solutions

  • masgomez
  • · Replies 1 ·
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1

Undergrad Why are photons massless if energy and mass are equivalent?

  • akashpandey
  • · Replies 10 ·
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10

Graduate Dichroic mirrors with two separate reflection bands

  • gkiverm
  • · Replies 3 ·
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3

Graduate Would synthesis of Acetylcholine make photons?

  • HawkI
  • · Replies 1 ·
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1

High School Is a photon emitted when an electron transitions between atoms?

  • HawkI
  • · Replies 8 ·
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8

Graduate Conservation of momentum in compton scattering

  • Avatrin
  • · Replies 4 ·
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4

Graduate Precession of an air rifle pellet in flight

  • TCups
  • · Replies 3 ·
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3

Undergrad An Observation And A Question -- Why does metal arc in a microwave oven?

  • Joshua McAnaney
  • · Replies 2 ·
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2

Graduate Is Light exclusively an ionization process?

  • batmanandrobin
  • · Replies 3 ·
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3

Graduate Does a light beam spreading infinitely dilute to zero and cease to exist?

  • jimmylegss
  • · Replies 5 ·
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5

Graduate Gravitational Force and Light: Is There a Connection?

  • marz
  • · Replies 2 ·
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2

Undergrad Do internal reflections in dense objects reverse the radiation direction?

  • roineust
  • · Replies 14 ·
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14

Graduate Group, phase and signal velocity of light

  • PWiz
  • · Replies 2 ·
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2