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Graduate Is there a difference between cross section and scattering cross section?

  • rshalloo
  • · Replies 11 ·
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11

Graduate How does a photon know to pass through without interacting?

  • tim2030
  • · Replies 6 ·
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6

Undergrad Measure optical power with spectrometer

  • juliettengo
  • · Replies 9 ·
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9

Graduate Breaking the coherence of an optical signal

  • narra
  • · Replies 4 ·
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4

Graduate Photons, Antimatter- My unsolved Questions

  • Cat_ion
  • · Replies 18 ·
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18

Graduate Interaction of Photon with water

  • ooiuniscience
  • · Replies 3 ·
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3

Graduate Photon as a particle and e-ray and o-ray

  • galvin452
  • · Replies 3 ·
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3

Graduate What Determines Axial Resolution in Spherical Lenses?

  • u0362565
  • · Replies 2 ·
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2

High School Limiting factor in determining if wave will pass through?

  • Larsoo
  • · Replies 1 ·
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1

Graduate Wave Interference and Polarization

  • jaumzaum
  • · Replies 3 ·
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3

Undergrad Do Stars in Space Interact Through Wave-Cancellation?

  • Tyler Wayne
  • · Replies 7 ·
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7

High School What is the energy of a photon from a given mass?

  • Dgonzo15
  • · Replies 1 ·
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1

High School Why doesn't white paper reflect my image like a mirror?

  • ShreyasR
  • · Replies 7 ·
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7

Undergrad What Can You See When You Look at a Mirror Under a Microscope?

  • rkatcosmos
  • · Replies 6 ·
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6

Graduate Calculating the coherence length of a laser

  • narra
  • · Replies 1 ·
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1

Undergrad Light waves travelling in a material.

  • fre1091
  • · Replies 8 ·
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8

Undergrad Do Photons Have Mass According to E=MC2?

  • AlfieD
  • · Replies 19 ·
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19

Graduate How does the finite size of an obstacle affect diffraction patterns?

  • Talker1500
  • · Replies 2 ·
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2

Graduate Detection of a Specific Fluorescent Wavelength via iPhone camera

  • Carroll1
  • · Replies 3 ·
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3

Graduate Angular magnification of an out-of-focus eyepiece

  • chromatic
  • · Replies 6 ·
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6

Undergrad Magnitude of the tension when there is static (variable) friction

  • arestes
  • · Replies 4 ·
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4

Undergrad Radio waves escaping an aluminum box at 1900 MHz

  • bikespot
  • · Replies 4 ·
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4

Undergrad Why is LCD cell thickness crucial for correct operation?

  • gtbiyb
  • · Replies 1 ·
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1

High School Wave aspect of light( index of refraction)

  • saba sha
  • · Replies 15 ·
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15

Graduate Is birefringence different in plastics, glass and calcite?

  • Orthoceras
  • · Replies 5 ·
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5

Graduate Could a spy satellite spot a nickel on the ground?

  • Svetlana_Vein
  • · Replies 28 ·
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28

Undergrad Single slit width change, how would fringes differ?

  • question dude
  • · Replies 3 ·
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3

Undergrad Correcting camera distance with zoom

  • Kidphysics
  • · Replies 3 ·
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3

Graduate How Does the Gradient Force Arise in Lasers?

  • rida
  • · Replies 3 ·
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3

High School Bubbles that collapse = light?

  • Abscissas
  • · Replies 2 ·
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2

High School Information carried by ray of light

  • nil1996
  • · Replies 5 ·
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5

Undergrad Ray tracing through optical system of thick lenses

  • tosik
  • · Replies 7 ·
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7

Graduate Why is the reflected wave's polarization tangential to the boundary?

  • yungman
  • · Replies 17 ·
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17

High School Finding amplitude from a diagram

  • Googl
  • · Replies 3 ·
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3

Graduate How do diffraction and uncertainty relate to each other?

  • cmcraes
  • · Replies 1 ·
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1

Undergrad What actually is a light wave and how does it pass through glass?

  • adjacent
  • · Replies 7 ·
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7

Graduate Proving polarization of reflected wave in oblique incidence

  • yungman
  • · Replies 2 ·
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2

High School Wheel appearing to rotate backward at high speed

  • Nitrogen
  • · Replies 1 ·
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1

High School Does visible light contain energy?

  • tinkeringone
  • · Replies 3 ·
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3

High School Does light make us heavier and does the Earth's rotation affect our weight?

  • Discor
  • · Replies 3 ·
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3

Graduate Ulaby equation 9.47a: perpendicular polarization distance definition

  • yungman
  • · Replies 2 ·
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2

Graduate Dipole model derivation for Rayleigh scattering in equation 1.2.1

  • IridescentRain
  • · Replies 4 ·
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4

Graduate Do two coherent light beams traveling in the same direction cancel if 180° out of phase?

  • bouscher
  • · Replies 12 ·
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12

Graduate Griffiths reflection and transmission at oblique incidence notation

  • yungman
  • · Replies 1 ·
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1

Undergrad Laser optics suppliers in Europe

  • sunrah
  • · Replies 1 ·
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1

Graduate How Does Light Slow Down in Different Media?

  • einstein1921
  • · Replies 1 ·
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1

Undergrad Image of a Convex Lens Cut in Half Horizontally

  • LovePhys
  • · Replies 4 ·
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4

High School How does light travel Through a vacuum

  • Darrenmackenz
  • · Replies 32 ·
2
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32

Graduate Absorption of light by spherical nanoparticle

  • Excom
  • · Replies 2 ·
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2

Graduate Resolution of F vs t measurement

  • Excom
  • · Replies 4 ·
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4

Undergrad Why do colors appear around light sources behind a straight edge?

  • filipg
  • · Replies 2 ·
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2

Graduate Change in speed and wavelength of light while travelling from one med

  • shantanuphadke
  • · Replies 2 ·
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2

Undergrad How does immersing a lens system in liquid change the image distance?

  • Numeriprimi
  • · Replies 4 ·
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4

High School Why do x-ray machines increase cancer risk?

  • acesuv
  • · Replies 36 ·
2
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36

High School Rayleigh scattering on gases-questions

  • ty1
  • · Replies 1 ·
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1

High School Whats faster than the speed of light?

  • danielpherlio
  • · Replies 5 ·
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5

Graduate Why is spectral transmittance dimensionless if it needs integration like a PDF?

  • mikeph
  • · Replies 4 ·
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4

Undergrad What is Spatial and Temporal Coherence.

  • onelastdance
  • · Replies 4 ·
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4

Graduate Can one laser beam disrupt another laser beam?

  • fattyxyz
  • · Replies 2 ·
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2

Graduate E-field polarization in the direction of propagation, TEM, TE, TM

  • olgar
  • · Replies 5 ·
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5

High School How Can Light Have No Mass Yet Transfer Energy?

  • danielpherlio
  • · Replies 3 ·
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3

Undergrad Does contact angle affect anti-reflective coating performance?

  • Weirdzzl
  • · Replies 5 ·
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5

Graduate Why self focusing at high densities?

  • Kidphysics
  • · Replies 4 ·
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4

Graduate Theory of Structured illumination microscopy

  • u0362565
  • · Replies 3 ·
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3

Graduate Airy disk and resolution in confocal microscopy

  • u0362565
  • · Replies 10 ·
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10

Graduate Deriving navier stokes in polar

  • ericm1234
  • · Replies 3 ·
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3

Undergrad Wave degradation over distances

  • Securityman
  • · Replies 1 ·
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1

What elements a light made of?

  • chuckadoll
  • · Replies 2 ·
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2

High School What element that can't pass through light?

  • chuckadoll
  • · Replies 19 ·
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19

Undergrad Is the laser perfect monochromatic light source?

  • DevendraC
  • · Replies 2 ·
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2

Undergrad Information travelling faster than light

  • billyn00b_2001
  • · Replies 14 ·
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14

Graduate How Does Dust Grain Size Compare to Wavelength in Scattering Light?

  • AriAstronomer
  • · Replies 1 ·
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1

Undergrad Chromatic aberration from a hair on an LCD screen

  • Akshay_Anti
  • · Replies 8 ·
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8

Undergrad Measuring EMI shielding effectiveness with reflectance vs absorbance

  • PolyOneTechie
  • · Replies 2 ·
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2

Graduate EM fields in unpolarized light

  • mrquantum
  • · Replies 7 ·
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7

Undergrad Focal length multiplied by wavelength

  • Aziza
  • · Replies 1 ·
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1

Graduate Is there a limit to how much energy can be stored in a photon?

  • Pseudo Epsilon
  • · Replies 42 ·
2
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42

Undergrad Why is there no diffraction when wavelength approaches zero?

  • Yogesh_2010
  • · Replies 2 ·
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2

Undergrad Acceptance Angle in Optical fibre

  • ananth271194
  • · Replies 4 ·
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4

Undergrad Can we find a material that only transmits red light?

  • ShayanJ
  • · Replies 2 ·
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2

Undergrad What does it take for a material to be transparent to light?

  • refind
  • · Replies 10 ·
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10

Graduate Side-by-side quarter wave plates

  • JesseM
  • · Replies 4 ·
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4

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

  • hokhani
  • · Replies 2 ·
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2

High School How is light affected by glass sheets?

  • hulk78
  • · Replies 8 ·
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8

Undergrad Refractive index of two fluids when mixed

  • Nikky1988
  • · Replies 2 ·
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2

Graduate How do I calculate reflected radiance from a single wave facet?

  • woody726
  • · Replies 1 ·
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1

Undergrad What Is the Relationship Between Radius and Wavelength in Huygens' Wavelets?

  • Firewolffzc
  • · Replies 6 ·
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6

Graduate Destructive Interference of gamma waves

  • waiwithheng
  • · Replies 6 ·
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6

High School How to define light in laymans terms

  • bykerboy011
  • · Replies 28 ·
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28

What unanswered questions remain in optics?

  • SaxophoneofTim
  • · Replies 3 ·
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3

Graduate Wavefront and point-like obstacle

  • Talker1500
  • · Replies 1 ·
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1

High School Why is white paper white and not black

  • karen_lorr
  • · Replies 13 ·
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13

Undergrad How do quarter wave chokes and waveguides work?

  • Pseudo Epsilon
  • · Replies 4 ·
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4

Undergrad Spherical interface formula giving wrong focal length

  • sfphysics
  • · Replies 2 ·
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2

High School What are wave and particle nature of light theories?

  • NafeesAhmed
  • · Replies 3 ·
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3

Graduate Stimulated Raman Scattering Spectroscopy

  • oneilltn
  • · Replies 5 ·
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5

Graduate Diffraction Grating And Lightbulb

  • mathskier
  • · Replies 18 ·
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18

Undergrad Diffraction patterns from sunlight vs laser through a pinhole or double slit

  • bhav007
  • · Replies 20 ·
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20

Undergrad Neutrino is faster then photon (light) so how can be this possible?

  • Astro-Anouar
  • · Replies 31 ·
2
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31

Undergrad Shooting a star (with torchlight)

  • coconut62
  • · Replies 21 ·
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21