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Graduate Derivation of Eikonal equations from Fermat's Principle

  • Matterwave
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Graduate Can electromagnetic waves be deflected by a magnetic field?

  • Lesnick
  • · Replies 3 ·
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Graduate Photons in amorphous glass slow because?

  • aimforclarity
  • · Replies 6 ·
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6

Graduate Speed of light just after the Big bang?

  • Geo212
  • · Replies 5 ·
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5

Undergrad Light Traveling in both Directions in a fiber optic cable

  • HyperSniper
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3

Graduate Idea for optimising solar collection

  • RandomRed
  • · Replies 10 ·
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10

Undergrad Can Light be used to see what's in the past?

  • Word.
  • · Replies 6 ·
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6

Undergrad How to model flight of simple parachute in 2D?

  • callagga
  • · Replies 2 ·
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2

Undergrad Sign convention in geometric optics.

  • PrakashPhy
  • · Replies 2 ·
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2

Graduate Is there a e-ray refraction theory?

  • enotstrebor
  • · Replies 9 ·
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9

Graduate Does a heated mirror reflect light at its emission wavelength?

  • cmb
  • · Replies 5 ·
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5

Graduate Minimizing spatial hole burning

  • Niles
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Graduate Rotating candle with mass loss at both ends shows increasing amplitude oscillations

  • aaaa202
  • · Replies 1 ·
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1

Undergrad Slowest recorded, speed of light.

  • MartinJH
  • · Replies 6 ·
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6

Graduate What is the concept of total cancellation in a Michelson interferometer?

  • JimOlsen
  • · Replies 8 ·
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8

High School Why is Light Considered an Electromagnetic Wave?

  • mysteriously
  • · Replies 2 ·
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2

Could I Have Damaged My Eye With a Laser Level?

  • Eye_yi_yi
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1

Graduate Passing elliptically polarized light through a linear polarizer

  • Niles
  • · Replies 2 ·
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2

Graduate Is There a Method to Accurately Calculate Depth of Field in Video Projection?

  • tobistobi
  • · Replies 5 ·
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5

Undergrad Calculate No of Images Formed by 2 Mirrors at Angle α

  • SandeshPhy
  • · Replies 1 ·
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1

Graduate Derivation of the thin lens equation?

  • Qubit12
  • · Replies 1 ·
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1

Undergrad Can Particles Like Light Be Accelerated in a Particle Accelerator?

  • CardboardBox
  • · Replies 3 ·
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High School Limits of Human Vision: Visible Spectrum and Beyond

  • hkunkun
  • · Replies 4 ·
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4

Undergrad What is the role of resonance in the heating process of a microwave oven?

  • wasi-uz-zaman
  • · Replies 2 ·
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Graduate Wavelength and precision of observation

  • annie122
  • · Replies 2 ·
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High School Splitting infrared and visible light.

  • hyderjoe
  • · Replies 8 ·
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8

High School What colors of visible light can be seen from the farthest distance?

  • u2_wa
  • · Replies 5 ·
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5

Graduate Optics - reduce image and launch into optical fiber

  • Kururunfa
  • · Replies 3 ·
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3

Undergrad How Do You Build a Wave Transmitter for Destructive Interference?

  • a.glick
  • · Replies 3 ·
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3

Undergrad Understanding Unpolarized Light

  • Kidphysics
  • · Replies 6 ·
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6

High School Are photons from a light bulb and the sun the same for our bodies?

  • bobsmith76
  • · Replies 4 ·
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Graduate Setting diffraction grating angle for retroreflection of wavelength λ

  • phantom113
  • · Replies 1 ·
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1

High School What is the Focal Length of a Convex Lens?

  • Yesofcourse
  • · Replies 4 ·
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4

Undergrad What is the relationship between numerical aperture and focal length in lenses?

  • Niles
  • · Replies 2 ·
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2

High School Why do planets and the moon appear white if light scattering makes the sun yellow?

  • Sasu Thakur
  • · Replies 1 ·
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Undergrad Hi In the Diffraction Handbook

  • Niles
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2

Graduate Infrared and NIR Camera Sensitivity

  • bitsnbytes
  • · Replies 4 ·
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4

Undergrad Can Two Intersecting Laser Pulses Create a Visible 'Flash' in Midair?

  • trini
  • · Replies 7 ·
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Graduate Breaking EM Destructive Interference

  • MTtylerb
  • · Replies 6 ·
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Graduate Can physics shed light on the nature of human consciousness ?

  • sytstp
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Undergrad Why doesn't light go faster than c?

  • blahsd
  • · Replies 45 ·
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High School Understanding Unpolarized Light: A Scientist's Perspective

  • rojan
  • · Replies 5 ·
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High School Does light take 8.3 minutes to reach each part of Earth as it rotates?

  • batballbat
  • · Replies 5 ·
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Graduate Understanding Diffraction Gratings: Optimal Blazing Angle and Wavelength

  • Niles
  • · Replies 4 ·
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4

Undergrad Reason behind so called Optical illusion or Simultaneous contrast

  • shashipoddar1
  • · Replies 6 ·
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6

Undergrad Interference fringe of light beams of different frequencies

  • abcrelativity
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8

Undergrad What is the mathematical equation for an aspheric lens surface?

  • Drakkith
  • · Replies 2 ·
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Graduate WHen x-rays hit the anode is it true that they become accelerated

  • jazzoz
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Undergrad Why does constructive interference of light beams seem to violate energy conservation?

  • amir11
  • · Replies 24 ·
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Graduate Optical design of surgical loupes

  • fylatos
  • · Replies 5 ·
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Undergrad Homopolar Generator: 0.1V Output, No Current

  • kannuhny24
  • · Replies 5 ·
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Undergrad An object that has direction but no magnitude?

  • Mooky
  • · Replies 9 ·
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Graduate Is Natural Unpolarized Light Equivalent to Randomly Fluctuating Elliptic Light?

  • Niles
  • · Replies 4 ·
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4

Undergrad Can visible violet light be harmful?

  • ThousandFjord
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4

Can you shape a tealight flame into simple forms?

  • martin1512
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Undergrad Why can't this wave travel in vacuum

  • pankaj232007
  • · Replies 6 ·
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Graduate Relation between absorption and refraction

  • Gobil
  • · Replies 7 ·
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Undergrad Interference Patten in standing waves

  • jihoonkim
  • · Replies 3 ·
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Undergrad Distance, Time relation and light.

  • maxcy03
  • · Replies 9 ·
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Undergrad How light from a dead star reaches Earth?

  • darrell
  • · Replies 3 ·
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3

Undergrad Understanding How Gravity Bends Light and Relates to General Relativity

  • moatasim23
  • · Replies 3 ·
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Undergrad Why does intensity decrease at successive maxima in diffraction patterns?

  • hale2bopp
  • · Replies 7 ·
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7

Undergrad Can fluorescence occur without UV light or in the infrared?

  • greenflash
  • · Replies 5 ·
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Graduate Traveling Faster Than Light: Effects and Possibilities

  • akg95
  • · Replies 1 ·
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Graduate Peak power and fluence from pulsed InGaN laser vs. nitrogen laser

  • EndersJ
  • · Replies 4 ·
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Undergrad What is the root source of Light ?

  • pravdt
  • · Replies 3 ·
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Undergrad Absolute and apparent magnitude

  • mmssm
  • · Replies 1 ·
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Undergrad Why X-Rays can go through Materials

  • Freespader
  • · Replies 6 ·
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6

Undergrad Why do we apply sign conventions to optics formulae?

  • hale2bopp
  • · Replies 2 ·
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Undergrad Proving Optical Law in plane mirror

  • rktpro
  • · Replies 3 ·
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High School Beautiful Natural Oceanic Diffraction Patterns

  • Johnny Davens
  • · Replies 16 ·
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Graduate Question for the use of Woolaston Prism in OPTICAL TWEEZER

  • Choi Si Youn
  • · Replies 9 ·
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Undergrad Why Are Wollaston Prisms So Expensive and What Are the Alternatives?

  • Flavio
  • · Replies 5 ·
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5

High School Do we see multiple images in mirror?

  • leonstavros
  • · Replies 7 ·
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7

Undergrad Why are wet materials transparent?

  • dotancohen
  • · Replies 4 ·
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4

Graduate Why is the size and location of pupils important in optical systems?

  • fisico30
  • · Replies 8 ·
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8

Graduate Deriving F=a2/λL in Fresnel Diffraction

  • khanley
  • · Replies 1 ·
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Undergrad Is light wave also transverse in media?

  • blenx
  • · Replies 7 ·
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7

Undergrad How does Rayleigh scattering work?

  • Bauch
  • · Replies 1 ·
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1

Undergrad Questions about light absorption

  • ada_ada_2002
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2

Undergrad Why do telescopes and microscopes use virtual images?

  • Marketo
  • · Replies 8 ·
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8

Undergrad Stimulated Emission by Laser discussion

  • lonewolf219
  • · Replies 6 ·
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6

Graduate Physics - Single Slit Diffraction

  • jakeswu
  • · Replies 3 ·
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3

Graduate Why does coherence length increase for narrow bandwidth light?

  • narra
  • · Replies 10 ·
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10

Undergrad CCD vs Photodiode: Which is Best Detector?

  • nordmoon
  • · Replies 2 ·
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2

Graduate Finding WavelengthHow do I find the wavelength using single slit diffraction?

  • perplexabot
  • · Replies 5 ·
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5

High School Lightning Rods: Can They Stop Thunder?

  • neutrino'
  • · Replies 1 ·
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High School Deviation and dispersion in a prism

  • Misr
  • · Replies 23 ·
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Graduate Is the maximum wavelength of light bounded by the size of the universe?

  • edearl
  • · Replies 6 ·
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Graduate Solving Image Problems with Orthonormal Systems - M. Next

  • M. next
  • · Replies 9 ·
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Undergrad Can Scientists Break the Speed of Light Barrier with Subatomic Particles?

  • agrimsmith
  • · Replies 1 ·
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Undergrad What is the difference between emissivity and reflectivity?

  • tom421421
  • · Replies 1 ·
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1

Graduate How Does Rotating a Glan-Thompson Polarizator Affect Brewster's Angle?

  • Niles
  • · Replies 1 ·
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Undergrad What is the speed of light in a Michelson interferometer?

  • queenstudy
  • · Replies 4 ·
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4

Undergrad Superposition of simple harmonic oscillations

  • confucius
  • · Replies 1 ·
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Undergrad Thin film interference concept

  • Woopy
  • · Replies 10 ·
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Graduate Adding energy and velocity to Planck length models

  • nbj622
  • · Replies 7 ·
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Graduate Goos hänchen shift and phase shift

  • taimoortalpur
  • · Replies 2 ·
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Graduate Radiant intensity of a Lambertian surface

  • dougy
  • · Replies 2 ·
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Graduate Can you measure a thin film thinner than the measuring wavelength?

  • pyrometer
  • · Replies 2 ·
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