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Graduate Calculating Zenith Angle for Nerf Gun Targeting

  • tomsiv
  • · Replies 3 ·
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3

High School When light goes from air to water,it change direction.

  • Hepic
  • · Replies 1 ·
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1

Undergrad Very short infrared remote control question

  • SUDOnym
  • · Replies 4 ·
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4

Scientific notation question - backscatter or backscattering angle?

  • clau5
  • · Replies 1 ·
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1

High School How Does Light Change Direction and Speed in Different Materials?

  • Hepic
  • · Replies 1 ·
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1

Undergrad Refractive Index: Why is it Same in Vacuum for All Lightwaves?

  • Hepic
  • · Replies 2 ·
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2

Undergrad What Does Single Electromagnetic Mode Mean in Fibre Optics?

  • ajayguhan
  • · Replies 9 ·
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9

Graduate Understanding conceptually how a plane wave interacts with a boundary

  • fred3142
  • · Replies 3 ·
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3

Graduate Is this a good way to reduce the bubble content of acrylic?

  • Stargazer19385
  • · Replies 8 ·
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8

Graduate Why is No Backward Wavefront Possible?

  • ronrknob
  • · Replies 3 ·
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3

High School Power from LED bulb in sunlight

  • Broncowolf
  • · Replies 5 ·
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5

Undergrad Can a Perfectly Black Object Absorb All Light and Create a Blank Spot in Vision?

  • coktail
  • · Replies 4 ·
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4

Graduate Optical setup: proper lenses selection

  • MG_xy
  • · Replies 3 ·
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3

Graduate Do antireflective coats increase the critical angle for total internal reflection?

  • Stargazer19385
  • · Replies 7 ·
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7

Graduate Why are X-rays scattered by matter?

  • ns_phonon
  • · Replies 12 ·
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12

Graduate How surface roughness determines matte vs. shiny appearance in black objects

  • rolaluv
  • · Replies 4 ·
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4

Graduate Optical design: BPP beam parameter product M^2 and beam expander

  • newshurik
  • · Replies 2 ·
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2

Undergrad Can red, green, blue LEDs mixed for white light be as efficient as broad spectrum?

  • Stargazer19385
  • · Replies 9 ·
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9

Graduate Finding polarization of plane wave with arbitrary propagation direction

  • enpires
  • · Replies 2 ·
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2

Graduate From what point is the focal length of a thick lens measured?

  • Stargazer19385
  • · Replies 7 ·
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7

Graduate How does the angle of incidence affect polarization of reflected light?

  • sperryrand
  • · Replies 5 ·
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5

Graduate Derivation of Height Function given an angle

  • Legaldose
  • · Replies 1 ·
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1

Undergrad Path Different Between Two Waves

  • Bashyboy
  • · Replies 1 ·
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1

High School Waves: Why No Interference Pattern with 2 Flashlights?

  • noobphysicist
  • · Replies 3 ·
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3

Graduate Microscope condensers and resolution kohler illumination

  • u0362565
  • · Replies 3 ·
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3

Undergrad Parabolic reflector dimensions for 70° beam spread with 18.75mm LED

  • czh133
  • · Replies 1 ·
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1

High School Does a sinusoidal voltage source create a sinusoidal wave in space?

  • anhnha
  • · Replies 7 ·
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7

Graduate Term scattering more of a general process

  • narra
  • · Replies 3 ·
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3

Graduate Why the photon is disturbed by a hole?

  • zrek
  • · Replies 43 ·
2
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43

Undergrad Why is there a negative sign in optical path difference?

  • moatasim23
  • · Replies 2 ·
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2

Undergrad Can the Energy of a Photon be Expressed in h/s?

  • bobie
  • · Replies 68 ·
3
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68

High School Can humans really see in the infrared spectrum?

  • bobie
  • · Replies 7 ·
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7

Graduate Converting Lumens to Photons and Energy at Varying Wavelengths

  • emcyroyale
  • · Replies 2 ·
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2

Undergrad Spectrum of Light from Hydrogen

  • Philosophaie
  • · Replies 1 ·
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1

Undergrad Stimulated and spotaneous emission

  • ajayguhan
  • · Replies 2 ·
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2

Graduate How do toroidal mirrors collimate beams and focus light?

  • einstein1921
  • · Replies 4 ·
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4

High School Difference between double slit diffraction and interference?

  • TheRedDevil18
  • · Replies 2 ·
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2

Graduate Random spectrophotometer peaks at 490nm and 660nm when testing iridescence

  • Samuels-art
  • · Replies 9 ·
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9

Undergrad Would a square wave look like a sine passed through a material?

  • arianna1012
  • · Replies 5 ·
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5

Graduate Two-Slit Experiment: Photon Energy Shift from Gravity

  • Emissive
  • · Replies 5 ·
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5

Graduate Can Light Travel Faster Than Its Speed in a Vacuum?

  • goldust
  • · Replies 6 ·
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6

Graduate Is there a phase shift associated with twisted nematic LCDs?

  • JohnDoes
  • · Replies 2 ·
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2

Graduate The Magic of Light: Trapping Light in Orbit

  • BobiG
  • · Replies 1 ·
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1

High School Optical scope for general purpose

  • Shreekumar
  • · Replies 4 ·
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4

Graduate Widefield laser epi-illumination

  • stephenx_86
  • · Replies 6 ·
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6

Graduate Double slit - why do we get an interference pattern?

  • Emissive
  • · Replies 9 ·
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9

Understanding laser phenomenon

  • skeenan
  • · Replies 3 ·
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3

Graduate Does Diffracted Light Need to Be Focused or Collimated on CCD?

  • einstein1921
  • · Replies 18 ·
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18

Undergrad Fourier Series and Absorption Questions?

  • arianna1012
  • · Replies 1 ·
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1

Graduate Dispersion of waves - wavephysics

  • Nikitin
  • · Replies 9 ·
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9

Undergrad Why Do Different Colors Appear When Using a Polarimeter on Sucrose Solution?

  • thomasfox1
  • · Replies 2 ·
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2

High School What Causes Everyday Objects to Have Different Colors?

  • sungholee
  • · Replies 9 ·
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9

Graduate Synchrotron X-ray Measurements

  • einstein1921
  • · Replies 3 ·
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3

Undergrad Can Lasers Be Used as a Viable Energy Source Despite Their High Power Output?

  • towuzzi
  • · Replies 5 ·
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5

Undergrad Understanding Destructive Wave Interference

  • aaaa202
  • · Replies 6 ·
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6

Graduate What'd happen if two light source collide w/ each other?

  • Muon neutrino
  • · Replies 6 ·
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6

Undergrad Two convex lenses in a system?

  • Violagirl
  • · Replies 3 ·
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3

Graduate Scattering formulas, what's the point?

  • Erland
  • · Replies 3 ·
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3

Undergrad Difference between Optical and Geometrical length?

  • VeToMiNaToR
  • · Replies 1 ·
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1

Undergrad 'flat' field spectrograph and optcs focusing

  • einstein1921
  • · Replies 3 ·
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3

High School An interesting way to get an interference pattern

  • Igottaknow
  • · Replies 3 ·
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3

Undergrad Why aluminum mirrors reflect 90% while prism diagonals reflect 100%

  • Stargazer19385
  • · Replies 10 ·
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10

Graduate Diminished image of ultra small object

  • eightsquare
  • · Replies 21 ·
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21

Undergrad Is it possible to use air as a medium to display images?

  • GreenAce92
  • · Replies 5 ·
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5

Undergrad Flipping a polarizer 180deg. changes polarization

  • i_amitabh
  • · Replies 10 ·
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10

Graduate To Physicists: Some questions and information?

  • 5000marios
  • · Replies 2 ·
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2

Graduate How can we have Inelastic scattering?

  • hokhani
  • · Replies 7 ·
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7

How we can collect two wave(light) ?

  • PhyHunter
  • · Replies 3 ·
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3

Undergrad Why is the reflection angle 180 - 2θ in a Laue camera, not just θ?

  • member 392791
  • · Replies 1 ·
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1

High School How Does Light and Time Affect Our Perception of Reality?

  • CRL
  • · Replies 2 ·
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2

Undergrad Sidebands when modulating 2.0 μm and 1.5 μm light at the same frequency

  • MS1984
  • · Replies 3 ·
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3

Graduate Understanding Interference and Energy in Monochromatic Light Sources

  • Erland
  • · Replies 7 ·
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7

High School [Waves] Wavelength and surfaces penetration

  • kickstar
  • · Replies 5 ·
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5

Undergrad Why does light follow a path of minimum time?

  • ajayguhan
  • · Replies 4 ·
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4

Undergrad What Went Wrong in My Young's Double Slit Experiment?

  • resurgance2001
  • · Replies 10 ·
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10

Undergrad Laser beam in a toroidal fiber optic waveguide

  • malonewolf
  • · Replies 6 ·
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6

Undergrad Should i be worried? (UV lamp wavelength)

  • iScience
  • · Replies 12 ·
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12

Undergrad Why does light travel so fast?

  • rshreyas
  • · Replies 9 ·
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9

Graduate Why can I see light from TEM00 laser in direction of propagation?

  • Aziza
  • · Replies 4 ·
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4

Graduate Does a monochromatic light pulse through an optical chopper require multiple frequencies?

  • semc
  • · Replies 12 ·
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12

Undergrad What Causes the Wave Motion of Light in a Vacuum?

  • dwn
  • · Replies 7 ·
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7

Graduate Ball lightning atmosphere interaction

  • Crazymechanic
  • · Replies 5 ·
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5

High School What Is the Wavelength of White Light?

  • ilikescience94
  • · Replies 5 ·
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5

Which side is positive polarity in this optical setup?

  • space0
  • · Replies 6 ·
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6

Graduate Can Microwaves Fuse Metal Particles on a Plastic Substrate?

  • taylaron
  • · Replies 7 ·
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7

Undergrad Spherical mirror area according to the amount of light

  • ex3mist
  • · Replies 9 ·
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9

High School Can My Friend Across the Atlantic See My Light on a Clear Day?

  • radioactive8
  • · Replies 22 ·
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22

Graduate Creating a low pressure region inside a laser beam

  • taylaron
  • · Replies 6 ·
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6

Graduate Does light follow a helical path ?

  • shiveeshfoteda
  • · Replies 4 ·
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4

Graduate Can light be synthetically created ?

  • shiveeshfoteda
  • · Replies 4 ·
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4

High School If a light goes from space to a glass

  • Hepic
  • · Replies 12 ·
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12

High School How does Bernoulli's principle explain how an aerofoil develops lift?

  • marinepyre
  • · Replies 5 ·
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5

Graduate Can Light Shift Beyond Detection Due to Particle Absorption?

  • Emissive
  • · Replies 6 ·
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6

High School Does every light ray travels in all directions?

  • HamedMousavi
  • · Replies 5 ·
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5

Undergrad Why Does Light With Less Wavelength Run Faster in Glass?

  • Hepic
  • · Replies 1 ·
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1

Graduate Understanding Brewster's Angle

  • fred3142
  • · Replies 4 ·
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4

Undergrad Why Aren't the Stars Visible at Night?

  • lufc88
  • · Replies 1 ·
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1

Graduate Can Laser be generated with only rapid decay levels?

  • genxium
  • · Replies 7 ·
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7

Undergrad How to determine if a semiconductor laser is broken

  • narra
  • · Replies 6 ·
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6

Graduate Converging wave interference generating a caustic

  • Darrelllashmar
  • · Replies 8 ·
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8