Optics Forum

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Undergrad Seeing infrared from a TV remote in the dark

  • waht
  • · Replies 18 ·
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18

Graduate Maximising X-Ray Image Quality with Minimal Dose Administration

  • Zinc
  • · Replies 2 ·
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2

High School Can monochromatic blue light be reflected as red light?

  • actionintegral
  • · Replies 17 ·
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17

High School Concave mirror and virtual image

  • jnimagine
  • · Replies 1 ·
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1

High School Spherical aberration and concave mirrors

  • jnimagine
  • · Replies 4 ·
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4

Graduate Does Compton Scattering Affect the Phase Velocity of Light?

  • actionintegral
  • · Replies 1 ·
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1

Undergrad Single-slit diffraction and wavelength

  • proton
  • · Replies 8 ·
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8

Undergrad Just wondering about frequencies

  • Ki Man
  • · Replies 3 ·
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3

Undergrad Why doesn't light interfere with itself in everyday life?

  • ValenceE
  • · Replies 2 ·
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2

Graduate Why does the perfect conductor approximation work for waveguides?

  • quasar987
  • · Replies 5 ·
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5

High School Light Dependent Resistor vs. Phototransistor

  • flash
  • · Replies 2 ·
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2

Undergrad How do different wavelengths of white light stay together in transit?

  • ValenceE
  • · Replies 7 ·
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7

Graduate Branches and types of photon scattering

  • lancashire liuyu
  • · Replies 2 ·
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2

Undergrad What Causes the Shimmering Network of Light in a Pool?

  • Ralph E. Frost
  • · Replies 2 ·
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2

High School Cause of Plastic Container Deformation in Microwave Oven

  • v0id
  • · Replies 12 ·
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12

Undergrad How Fast Do We Perceive Light Compared to Its Actual Speed?

  • dcclxxvii
  • · Replies 6 ·
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6

High School Why can you see a real image in a concave mirror?

  • doodlamani
  • · Replies 7 ·
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7

High School Why Does Black Light Illuminate White Objects?

  • daniel_i_l
  • · Replies 4 ·
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4

High School How and why does a mirror reflect light?

  • pivoxa15
  • · Replies 1 ·
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1

Undergrad What else Albert Einstein's contributions in optic and photonics?

  • pacificmoon
  • · Replies 12 ·
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12

Undergrad Why does yellow light penetrate fog better than red light?

  • ku1005
  • · Replies 2 ·
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2

Graduate What would an eye see at the center of a perfectly mirrored sphere?

  • Zegnarfol
  • · Replies 5 ·
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5

Graduate Does sunlight push the Earth ever so slightly?

  • Chaos' lil bro Order
  • · Replies 4 ·
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4

Graduate Can a lens reduce beam diameter while keeping rays parallel?

  • GeorgeSol
  • · Replies 27 ·
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27

High School What Do Light Waves Travel Through?

  • Repertoire
  • · Replies 19 ·
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19

Undergrad Data can't move faster than the speed of light?

  • jhokie
  • · Replies 16 ·
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16

Graduate Why does diffraction around Earth explain why we see the full moon?

  • pivoxa15
  • · Replies 20 ·
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20

Graduate Reconstructing an object's image from diffracted light around a corner

  • Loren Booda
  • · Replies 7 ·
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7

High School What are some interesting project ideas related to optics?

  • mprm86
  • · Replies 1 ·
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1

Graduate From a photon's reference frame

  • nealh149
  • · Replies 9 ·
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9

Undergrad How did the infinite focus lens from a 1990s Discovery show work?

  • SkepticJ
  • · Replies 5 ·
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5

High School Why does high power magnification result in a dim image?

  • lwymarie
  • · Replies 2 ·
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2

High School Why is the shadow yellow when a blue LED casts it on white paper?

  • InFiNitY1
  • · Replies 17 ·
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17

Undergrad Light and time- what i think about it

  • varsha
  • · Replies 17 ·
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17

Undergrad What causes energy to move in a wave?

  • caybo
  • · Replies 1 ·
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1

Graduate Why does light seem to defy time?

  • Put a quark in it
  • · Replies 11 ·
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11

Undergrad What happens to energy after destructive interference of two waves?

  • mprm86
  • · Replies 1 ·
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1

Undergrad I was wondering something about diffraction

  • Byrgg
  • · Replies 86 ·
3
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86

Graduate Calculate how much radiant power goes through an optical system

  • rp895
  • · Replies 1 ·
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1

Undergrad Splitting a laser beam into multiple beams with shaped crystal

  • neosenate
  • · Replies 2 ·
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2

Undergrad Lightning strikes - safe in car, but

  • BigShotBOB
  • · Replies 1 ·
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1

High School How do we see things that don't create photons?

  • linux kid
  • · Replies 3 ·
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3

Graduate Light questions (not wave/particle duality)

  • Riposte
  • · Replies 2 ·
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2

Can you control the length of a light beam without it hitting a surface?

  • linux kid
  • · Replies 11 ·
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11

Graduate Why do I get duplicate object images in digital holography reconstruction?

  • fargoth
  • · Replies 5 ·
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5

Graduate Question on light intensity at the focus of a lens.

  • RGClark
  • · Replies 2 ·
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2

High School Where can I find a simple introduction to photonics and its applications?

  • Neha Sanghvi
  • · Replies 3 ·
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3

Graduate Can you reverse transform a thin film diffraction pattern?

  • John_H
  • · Replies 6 ·
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6

Undergrad Is the Spectrum Always Consistent with the Source?

  • kumar5
  • · Replies 27 ·
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27

High School Microwaves - finding the wavelength

  • dragon2309
  • · Replies 6 ·
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6

Graduate SASER is the acoustic analog of a laser

  • Mk
  • · Replies 8 ·
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8

High School About too much light in a room

  • Born2Perform
  • · Replies 4 ·
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4

High School Why the water waves bend in diffraction?

  • Aladin
  • · Replies 1 ·
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1

High School Vietnamese student asks about rainbows, sky color, and polarized light

  • lanovia
  • · Replies 6 ·
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6

Undergrad Refraction, Why does the light re accelerate?

  • josh444
  • · Replies 2 ·
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2

Undergrad What caused the strobe effect on the raindrops during the thunderstorm?

  • GENIERE
  • · Replies 14 ·
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14

High School Why does mixing blue and yellow liquid create green?

  • touqra
  • · Replies 5 ·
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5

High School How Does Sound Diffraction Affect What You Hear Through Barriers?

  • Byrgg
  • · Replies 3 ·
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3

High School I promise this is the last question

  • LaPalida
  • · Replies 6 ·
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6

Graduate Changing refractive index with Kerr effect between glass panels

  • Sam_0
  • · Replies 5 ·
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5

Undergrad Why Does Diffraction Occur Even When Wavelength Exceeds Aperture Width?

  • Byrgg
  • · Replies 70 ·
3
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70

Graduate Forces affecting the path of a photon

  • professor
  • · Replies 8 ·
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8

Undergrad Deriving Power From Lightning - Is It Possible?

  • extreme_machinations
  • · Replies 4 ·
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4

Undergrad Transmission Coeff of Window Glass vs Wavelength?

  • dimensionless
  • · Replies 1 ·
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1

Undergrad Measuring wall brightness with glass-fiber paint

  • sheremyjockey
  • · Replies 1 ·
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1

Graduate Can Pulse Laser Theory Unlock New Cutting Techniques Beyond 2 Inches?

  • mung_geh
  • · Replies 5 ·
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5

High School How do electrons travel in different mediums?

  • Line
  • · Replies 2 ·
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2

Undergrad Optics Specialist Needed for "Fluid Light-Pipe" Project

  • Danger
  • · Replies 4 ·
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4

High School Why do some objects have colors while others don't?

  • paulwiersma
  • · Replies 14 ·
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14

Undergrad Black holes 'attracting' light?

  • Ithaca
  • · Replies 2 ·
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2

Undergrad What determines transparency, translucency, opacity and reflection?

  • Rainbow
  • · Replies 1 ·
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1

Graduate Digital holography - why not 3d?

  • fargoth
  • · Replies 4 ·
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4

Undergrad Radiant Energy from Sun: Visible Light vs. IR

  • CobblyWorlds
  • · Replies 4 ·
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4

High School Does light slow down in air and when it hits objects?

  • eggman
  • · Replies 15 ·
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15

Undergrad How Do You Convert 290mcd to Candelas/Meter Square?

  • alexa179
  • · Replies 1 ·
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1

Undergrad Light in Non-Vacuum: Speed of Travel?

  • pi-r8
  • · Replies 5 ·
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5

Graduate Non-Linear Optics: American Approach for French Student

  • Raphael [France]
  • · Replies 2 ·
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2

Undergrad Why Doesn't Incident Light Interfere with Reflected Light in a Mirror?

  • cepheid
  • · Replies 4 ·
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4

Undergrad Question: do e/b-fields effect light?

  • silverdiesel
  • · Replies 3 ·
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3

Graduate When to use TE, TM, and TEM modes in waveguides and cables?

  • J77
  • · Replies 5 ·
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5

Seeing Red and Blue: Is it Vision or Physics?

  • skywolf
  • · Replies 3 ·
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3

Graduate What are the approximations made when applying the wave-equation to light waves?

  • yetar
  • · Replies 2 ·
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2

Undergrad Why don't camera images show interference or color mixing at the focal point?

  • Brian99
  • · Replies 2 ·
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2

Undergrad Laser intensity as a function of distance

  • fargoth
  • · Replies 8 ·
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8

Undergrad When a beam of light is passed through a polarizer, it is polarized in

  • touqra
  • · Replies 4 ·
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4

High School Can a curved mirror create a sunbeam larger than the mirror itself?

  • Doc Brown
  • · Replies 7 ·
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7

Graduate Does light travel the full wave path or just horizontal distance?

  • Giulio B.
  • · Replies 3 ·
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3

Undergrad Can i use a prism to diffract(separate?) ultralight or microwaves

  • skywolf
  • · Replies 2 ·
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2

Undergrad Do concentrated forms of light, such as a laser, have mass?

  • randy23
  • · Replies 2 ·
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2

Undergrad How does the curvature of the earth affect the speed of cell phone signals?

  • robert Ihnot
  • · Replies 4 ·
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4

Undergrad Calc Angle of Refraction in Opaque Drinking Glass Problem

  • U154756
  • · Replies 1 ·
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1

Graduate Metals, X-rays, and plasma frequency

  • pervect
  • · Replies 7 ·
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7

Undergrad Calculating Eye Resolution at Different Distances

  • alex_boothby
  • · Replies 5 ·
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5

Undergrad Measuring Perception of Line Separation at Varying Distances and Light Levels

  • alex_boothby
  • · Replies 1 ·
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1

Undergrad Diffraction of Light: θ and λ Relationship

  • BigMonkey
  • · Replies 3 ·
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3

Graduate Derivation of gamma in the Rayleigh refractometer formula

  • n0_3sc
  • · Replies 1 ·
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1

Undergrad Solid with Varying Refractive Index

  • Sam_0
  • · Replies 2 ·
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2

Undergrad When light travels from a less optically dense medium

  • Byrne
  • · Replies 1 ·
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1

Undergrad Can laser diodes replace He-Ne lasers for white light reflecting holograms?

  • ngkamsengpeter
  • · Replies 2 ·
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2

Graduate How do Mirrors work on nano scales ?

  • Chaos' lil bro Order
  • · Replies 28 ·
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28