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Undergrad Photons observed on photographic plate - but not in eyes? Why?

  • nousername
  • · Replies 3 ·
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3

Graduate Divergence in spherical polar coordinates

  • Idoubt
  • · Replies 22 ·
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22

Graduate How to determine phase and amplitude after light propagation through a lens?

  • newshurik
  • · Replies 1 ·
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1

High School Why is there a lack of consistency in portrayals of the visible light spectrum?

  • shiva999
  • · Replies 65 ·
3
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65

Graduate Question related to Optical Waveguides and power

  • nordmoon
  • · Replies 2 ·
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2

High School Why does the moon's reflection on water appear wider at the horizon than overhead?

  • oyuncu
  • · Replies 15 ·
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15

Graduate Diffraction and Aperture Size: How Does It Affect Image Resolution?

  • peter.ell
  • · Replies 1 ·
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1

Graduate Generalizing reflection methods from curved mirrors to arbitrary surfaces

  • Jeff.N
  • · Replies 4 ·
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4

Undergrad How Do Curved Mirrors Form Clear Images?

  • dEdt
  • · Replies 3 ·
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3

Undergrad If photons are massless, why don't they penetrate walls?

  • bodhi
  • · Replies 18 ·
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18

High School Why Are Rainbows Formed?

  • mrinmoymahapa
  • · Replies 2 ·
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2

Undergrad Why birefringence effect polarizes light?

  • Flavio
  • · Replies 8 ·
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8

Graduate Laser/Wave Phenomena Exploration

  • Mr. Heretic
  • · Replies 2 ·
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2

Graduate Bremsstrahlung photon intensity and energy

  • parsec
  • · Replies 1 ·
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1

Undergrad Wave Transmitted Amplitude Greater than Incident: Conditions?

  • gyht42
  • · Replies 2 ·
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2

Graduate How to measure refractive index of plastic

  • Curl
  • · Replies 5 ·
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5

Graduate Possibility of a smoothly wavelength-tunable x-ray/EUV source

  • benjzhi
  • · Replies 5 ·
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5

Graduate How does reflection behave on surfaces with varying Gaussian curvature?

  • Jeff.N
  • · Replies 1 ·
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1

Undergrad How big should a lens be to focus enough light to reach 1000 Celcius?

  • Panthera Leo
  • · Replies 2 ·
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2

Graduate Laser focusing, minimum beam width

  • Jimbone
  • · Replies 9 ·
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9

Graduate Transparency of the sun to extremely long wavelength photons

  • tasp77
  • · Replies 7 ·
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7

Undergrad How does light from the sun cause atoms to vibrate?

  • PrayingMantis
  • · Replies 8 ·
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8

The universe through the eyes of a photon

  • Silverious
  • · Replies 23 ·
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23

High School What is the speed of darkness?

  • drwdrw123
  • · Replies 2 ·
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2

Graduate If light is a particle, what is wavelength / frequency ?

  • nonequilibrium
  • · Replies 1 ·
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1

Is Colour Really in Your Head?

  • sophiecentaur
  • · Replies 39 ·
2
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39

Graduate Contracting Wavelength via mirrors.

  • Edward Solomo
  • · Replies 2 ·
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2

Graduate I throw a metal rod (not light) into the air

  • jewbinson
  • · Replies 7 ·
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7

Graduate EM Destructive interference of two coherent beams

  • cyber stealth
  • · Replies 4 ·
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4

Graduate Does increasing slit size in spectroscopy affect SNR?

  • fsonnichsen
  • · Replies 4 ·
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4

Undergrad Single layer MgF2 anti-reflection coating on silicon

  • daniel1211
  • · Replies 1 ·
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1

Undergrad Can circularly polarized light interfere with linearly polarized

  • Albert V
  • · Replies 6 ·
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6

High School What Color Does a Blue Book Appear Under Monochromatic Red Light?

  • nami habib
  • · Replies 3 ·
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3

High School Why are moving objects blurred in a camera?

  • CyberShot
  • · Replies 5 ·
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5

Graduate Transformation Optics and Meta-materials

  • JunkieJim
  • · Replies 2 ·
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2

High School What is the name for the colorful effect produced by oil on water?

  • maruthisarat
  • · Replies 1 ·
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1

Undergrad Can Laser/Maser Pass Through Tissue without Interacting?

  • Thiago
  • · Replies 16 ·
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16

Graduate Can anybody explain the modulation of radio waves in terms of photons?

  • sriecewit
  • · Replies 6 ·
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6

Undergrad Which Ray Will Reach the Second Plane First?

  • AudioFlux
  • · Replies 2 ·
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2

Graduate Light building the standard model

  • elegysix
  • · Replies 68 ·
3
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Undergrad Speed of light in dispersive medium

  • agentredlum
  • · Replies 1 ·
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1

Undergrad How to shift a focal point af an objective

  • martim
  • · Replies 2 ·
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2

Undergrad When train moves at speed of light the time becomes slow. why it happens?

  • joyever
  • · Replies 2 ·
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2

High School Can you see your own reflection in water at normal incidence?

  • Curious1977
  • · Replies 6 ·
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6

Graduate Alternating violet and red fringes in Diffraction Grating

  • huey910
  • · Replies 2 ·
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2

Graduate Can we observe the motion of a photon in cartesian space?

  • Hippasos
  • · Replies 4 ·
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4

Undergrad How do we know the speed of light exists ?

  • flyingpig
  • · Replies 4 ·
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4

Graduate How can infrared photons impart energy

  • fireofenergy
  • · Replies 11 ·
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11

Graduate Collimating a point source formula?

  • excalibur313
  • · Replies 11 ·
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11

Graduate Can you make a laser using radio waves at 10 km wavelength?

  • jonthebaptist
  • · Replies 1 ·
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1

Undergrad Can lasers affect sound waves?

  • RLXgno
  • · Replies 9 ·
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9

Undergrad Does Glass Affect the Speed of Light's Travel from A to B?

  • ralqs
  • · Replies 3 ·
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3

Graduate How Does Photon Energy Influence Exponential Attenuation in Matter?

  • Orlando
  • · Replies 2 ·
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2

Graduate Do optical antennas produce light that looks different to the human eye?

  • y33t
  • · Replies 13 ·
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13

Graduate How can this laser project a point in three-dimensional space?

  • univeruser
  • · Replies 10 ·
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10

Undergrad *Where* does sunlight scattering occur?

  • DaveC426913
  • · Replies 35 ·
2
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35

Undergrad Will light eventually fade away given enough distance?

  • zeromodz
  • · Replies 15 ·
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15

Undergrad Diffraction - Why must slit width be comparable to the wavelength of light?

  • nousername
  • · Replies 2 ·
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2

Graduate How does the wave-particle duality of light affect its behavior?

  • VortexLattice
  • · Replies 6 ·
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6

Graduate What is an evanescent wave? What are its applications?

  • ksmith1281
  • · Replies 3 ·
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3

Graduate Can Linear Birefringence create elliptically polarized waves?

  • ksmith1281
  • · Replies 4 ·
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4

Undergrad Why does sound travel faster in water but light slower?

  • gkangelexa
  • · Replies 10 ·
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10

High School Can light enegry or waves affects sound waves?

  • New|c
  • · Replies 7 ·
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7

High School I was just wondering how light comes to be, from light bulbs or flash

  • fiziks dood
  • · Replies 3 ·
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3

Undergrad Thin film interference formulae

  • khaos89
  • · Replies 3 ·
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3

Graduate Radome pulsed microwave questions

  • Irishjunius
  • · Replies 4 ·
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4

High School Observing a light source through blinds (picture included)

  • ecneicS
  • · Replies 1 ·
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1

High School Does Focal Length Differ for Convex Lenses?

  • fromthepast
  • · Replies 5 ·
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5

Graduate How come when h2o drops on my computer screen I see

  • Nano-Passion
  • · Replies 5 ·
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5

High School Does the angle of incidence equal the angle of reflection in total internal reflection?

  • fromthepast
  • · Replies 2 ·
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2

High School Can total internal reflection occur when light passes from air into water?

  • fromthepast
  • · Replies 1 ·
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1

High School UV/Blacklight Uses: Get Scientific Data from It!

  • thebiggerbang
  • · Replies 3 ·
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3

High School Can I use any watt light bulb on my ceiling without risking an explosion?

  • flyingpig
  • · Replies 1 ·
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1

Undergrad Magnifying power v/s magnification

  • thebiggerbang
  • · Replies 3 ·
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3

Undergrad What factors influence the direction of emitted photons from an atom?

  • delingwithbob
  • · Replies 1 ·
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1

Graduate Optical trap, choosing the right condenser NA illuminate QPD

  • donroy81
  • · Replies 1 ·
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1

High School What's the Difference Between Monochromatic and Coherent Waves?

  • nousername
  • · Replies 4 ·
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4

Undergrad Need to Know if Star Light is Coherent?

  • sadegh4137
  • · Replies 3 ·
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3

Undergrad Can holography reproduce oil paintings with their colors and brushstrokes?

  • Dohlman
  • · Replies 2 ·
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2

Undergrad How does light stay in motion? Why does it travel at it's speed? Does

  • Cbray
  • · Replies 2 ·
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2

Graduate Why light is a sinusoidal wave?

  • lovetruth
  • · Replies 56 ·
2
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56

High School Can a material absorb light on one side and reflect it on the other?

  • fouad89
  • · Replies 13 ·
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13

Graduate Why doesn't the closing speed between two objects exceed the speed of light?

  • Gear300
  • · Replies 13 ·
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13

Undergrad Why can't we form an image with just one ray of light?

  • ashishsinghal
  • · Replies 8 ·
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8

Undergrad Why isn't light induced by an antenna

  • thunkit
  • · Replies 5 ·
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5

Undergrad Is Light a Macroscopic or Microscopic System?

  • StevieTNZ
  • · Replies 3 ·
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3

Undergrad Answer to light speed travel is E=mc2 itself?

  • fredk91
  • · Replies 3 ·
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3

High School How 17th century scientists made pinholes?

  • mehrdad_baghery
  • · Replies 2 ·
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2

Graduate Pixel pitch, Airy disk diameter and maximum aperture

  • D_K
  • · Replies 5 ·
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5

Undergrad Why is it possible to see a real image in a mirror?

  • JSGandora
  • · Replies 2 ·
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2

Undergrad Understanding what Light is (My attempt at an explanation)

  • Elwin.Martin
  • · Replies 9 ·
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9

Undergrad How Does Coherence Affect Interference and Diffraction in Light Waves?

  • khurram usman
  • · Replies 7 ·
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7

Undergrad Can spherical aberration be avoided in lenses with non-spherical curves?

  • itszach
  • · Replies 22 ·
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22

Undergrad Light hitting a superconductor?

  • cragar
  • · Replies 3 ·
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3

Undergrad Sunlight equivalent light bulb

  • vinniewryan
  • · Replies 2 ·
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2

Undergrad Do coherent waves need the same frequency or can they be simple multiples?

  • khurram usman
  • · Replies 8 ·
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8

Undergrad What's Wrong with my Experiment?

  • FeDeX_LaTeX
  • · Replies 15 ·
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15

Graduate Color Subtraction to the Eye Problem

  • JSGandora
  • · Replies 13 ·
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13

Graduate Causes of Diffraction Patterns

  • Nacho
  • · Replies 6 ·
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6

Undergrad How/why does diffraction occur?

  • saim_
  • · Replies 10 ·
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10