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Undergrad Light pipes - is there a limit

  • Skeptik22
  • · Replies 20 ·
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20

Undergrad What are the common methods for creating a laser point cloud?

  • chambers.keivn
  • · Replies 6 ·
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6

Graduate Telecentric entrance pupil - Optics

  • Wminus
  • · Replies 3 ·
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3

Undergrad Why are radiowaves used for WiFi and microwaves for satellite communication?

  • Saado
  • · Replies 3 ·
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3

Undergrad Fiber Optic Loop: How Long Before Photon Dissipation?

  • Danyon
  • · Replies 4 ·
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4

Graduate Refractive index data for GaSb and InSb from 2 to 20 micrometers

  • johannxv
  • · Replies 1 ·
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1

Undergrad Photons -- can they have mass and travel at c?

  • lavoisier
  • · Replies 19 ·
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19

Undergrad Does Light Always Travel at the Speed of c in Different Mediums?

  • Evosaer
  • · Replies 4 ·
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4

High School How to photograph a diffraction pattern?

  • jinawee
  • · Replies 28 ·
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28

Undergrad Components of vectors (polar coordinates)

  • PFuser1232
  • · Replies 2 ·
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2

Graduate Half-wave plate shows different minimum extinction when flipped

  • Ornit
  • · Replies 10 ·
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10

Undergrad Focal length of 2 lenses to reduce laser beam diameter

  • RandomGuy88
  • · Replies 2 ·
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2

Undergrad Does current or the Poynting vector light an incandescent bulb?

  • Imabioperson
  • · Replies 8 ·
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8

Undergrad Polarization and refractive index

  • fissionary
  • · Replies 22 ·
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22

Graduate Bending the Rules (Gamma ray lenses)

  • Fallen-S36
  • · Replies 4 ·
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4

Graduate Vector components in polar coordinates

  • PFuser1232
  • · Replies 14 ·
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14

Graduate I am trying to find materials to make a pulse laser for lab

  • mike232
  • · Replies 3 ·
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3

Undergrad Understanding Angular Magnification in Simple Magnifiers and Telescopes

  • ThatDude
  • · Replies 2 ·
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2

Undergrad Random question -- if a laser beam did not spread out

  • TimeRip496
  • · Replies 18 ·
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18

Graduate Relativity and Photon Emission

  • Danyon
  • · Replies 6 ·
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6

Undergrad Interference-based Rotation Sensing: Utilizing Split Beams and Phase Changes

  • MRzNone
  • · Replies 4 ·
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4

Graduate Newton's optical theory of gravity

  • TEFLing
  • · Replies 8 ·
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8

Graduate Electrically Controlled Auto Darkening Lenses: Mirrored or Transparent?

  • Longknife
  • · Replies 1 ·
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1

High School Can a rainbow form close to the ground?

  • Thalles
  • · Replies 16 ·
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16

Graduate What chem reactn gives the highest rate of photons emssn/t ?

  • Nick23
  • · Replies 1 ·
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1

Graduate Photograph of (optical) caustics

  • Andy Resnick
  • · Replies 1 ·
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1

High School Refraction of Light: Is There No Refraction?

  • AkshayPitt
  • · Replies 2 ·
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2

Graduate Polar coordinates, sign ambiguity

  • PFuser1232
  • · Replies 6 ·
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6

Graduate Proving the scalar wave equation from vectorial curl identity

  • elgen
  • · Replies 3 ·
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3

Undergrad Can a real image be formed by a virtual image?

  • Samuelriesterer
  • · Replies 14 ·
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14

Undergrad Using Red Light to Reduce Effect of Ambient Light

  • AkshayPitt
  • · Replies 2 ·
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2

Graduate Phase of reflected and transmitted waves in Griffiths

  • carllacan
  • · Replies 2 ·
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2

Graduate Creating a Photon-Free Space: Is it Possible?

  • kuro-hi
  • · Replies 1 ·
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1

Undergrad Physics of Sight: How Does it Work?

  • rede96
  • · Replies 5 ·
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5

Graduate Could a photon activate multiple photomultipliers at once?

  • Ghostcrown
  • · Replies 7 ·
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7

Graduate Difference in proof between TE and TM modes

  • GengisKhan
  • · Replies 2 ·
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2

Undergrad Nodal and anti-nodal lines in wave interference patterns

  • julianwitkowski
  • · Replies 1 ·
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1

Undergrad Young Double slit experiment condition

  • Raghav Gupta
  • · Replies 13 ·
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13

Undergrad What particle emits the most radio waves?

  • S3nkaku
  • · Replies 7 ·
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7

High School Why is photon massless particle?

  • disky
  • · Replies 3 ·
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3

Undergrad What is the relationship between intensity and amplitude?

  • Raghav Gupta
  • · Replies 4 ·
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4

Graduate Photonic vacuum and atomic stability

  • Shri13
  • · Replies 5 ·
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5

Undergrad Do red laser pointers follow the law of reflection?

  • joejoe1234
  • · Replies 7 ·
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7

Graduate Build a LCD Flicker Meter Using Photodiode and Current Amp

  • Eddie13
  • · Replies 1 ·
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1

Graduate Fourier shifting theorem in diffraction

  • blue_leaf77
  • · Replies 1 ·
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1

Graduate Does reflection change the frequency of light?

  • Reallyfat
  • · Replies 14 ·
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14

Undergrad What determines if light is reflected, absorbed or transmitted by an object?

  • pstuc
  • · Replies 1 ·
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1

Graduate What are the limits of λ and E parameters in the Kerr Optical Effect?

  • ajdecker1022
  • · Replies 4 ·
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4

Graduate Curiosity for existence of Anti- photons?

  • Shri13
  • · Replies 6 ·
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6

Graduate How does split step Fourier method help four wave mixing?

  • eahaidar
  • · Replies 5 ·
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5

High School Do we have a complete knowledge of the spectrum of light?

  • m_robertson
  • · Replies 17 ·
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17

High School Internal reflection in a long optical block

  • Syndy
  • · Replies 7 ·
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7

High School The Doppler Effect on a still object?

  • Joshua Mitchell
  • · Replies 15 ·
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15

High School Will UV Filter Stop Bullseye Glass From Starting Fires?

  • William203
  • · Replies 4 ·
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4

Graduate Complex Wave Orientation Correction

  • Nick.
  • · Replies 1 ·
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1

High School How does the dark and bright fringes form ?

  • yuganes warman
  • · Replies 2 ·
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2

Undergrad Why Is Binary Modulation Preferred in Visible Light Communication?

  • RAHIL008
  • · Replies 9 ·
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9

Graduate Solving a Laser Beam Deflection Problem Using Equations

  • ibonasa
  • · Replies 1 ·
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1

Undergrad Is it possible to create a specific wavelength

  • Oliver McIrwin
  • · Replies 10 ·
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10

Graduate Why is reflected light from water horizontally polarized?

  • Jimmy87
  • · Replies 4 ·
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4

Graduate Negative r and θ range conventions in polar coordinates

  • PFuser1232
  • · Replies 8 ·
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8

Graduate How do photons interact with matter and could they gain mass?

  • Cody Richeson
  • · Replies 12 ·
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12

Graduate How to calculate mode overlap with I(x,y) rather than E(x,y)

  • Fixar Frazze
  • · Replies 1 ·
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1

Undergrad Material opaque to IR but transparent to visible light

  • refind
  • · Replies 7 ·
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7

Graduate Why does reflection phase shift depend on polarization and angle?

  • ShayanJ
  • · Replies 4 ·
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4

High School What does reflectivity Contrast mean?

  • appleraja
  • · Replies 1 ·
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1

Graduate Violation in diffraction? Lagrange (Optical) invariant

  • valeriy2222
  • · Replies 7 ·
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7

Undergrad Lens Question for Design of an Infrared Spotlight

  • zlj06
  • · Replies 6 ·
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6

Undergrad Radiant intensity, LED specifications

  • vst98
  • · Replies 20 ·
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20

High School Covering 1 slit in Young's double slit experiment

  • Tulatalu
  • · Replies 1 ·
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1

Undergrad Simplest possible light sensor relative calibration

  • john824
  • · Replies 7 ·
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7

Undergrad Worst frequency for EM interference?

  • ChromeBit
  • · Replies 3 ·
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3

Undergrad How do IR cameras distinguish emission from reflection at 7 microns?

  • AkshayPitt
  • · Replies 3 ·
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3

Undergrad Two slits diffraction vs interference

  • bgq
  • · Replies 13 ·
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13

High School Why do things far away seem smaller?

  • 1832vin
  • · Replies 21 ·
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21

Graduate Why does Newtonian dynamics break down at the speed of light

  • nisarg
  • · Replies 40 ·
2
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40

Undergrad Bragg law vs interference equaiton

  • Chemist@
  • · Replies 5 ·
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5

Graduate How much energy does light transfer to an object?

  • alanf
  • · Replies 12 ·
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12

Undergrad Optics: Working out distance of an object from single digital camera using the captured image

  • Aliando
  • · Replies 3 ·
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3

Undergrad Can you draw a tangent to Huygens wavelets if they don't touch?

  • gracy
  • · Replies 6 ·
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6

Undergrad Methods for Modeling 2d Rocket Flight

  • CSteiner
  • · Replies 5 ·
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5

Undergrad Do PV panels absorb all wavelengths equally?

  • scott22
  • · Replies 2 ·
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2

High School Constructive interference and destructive interference

  • gracy
  • · Replies 2 ·
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2

High School Why do different materials reflect different colors of light?

  • iknowsigularity
  • · Replies 15 ·
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15

Graduate Refractive index calculation for semiconductors across wavelength range

  • rbert15
  • · Replies 14 ·
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14

International Year of Light: Article Collection

  • Lauren Harvey
  • · Replies 3 ·
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3

Undergrad What Are Photons? Effects of Electric Charges

  • 123987
  • · Replies 46 ·
2
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46

Undergrad Trouble understanding Fermat's principle of least time

  • FeynmanFtw
  • · Replies 7 ·
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7

High School About "Light", need better understanding of it.

  • lukestar
  • · Replies 5 ·
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5

Graduate How Do You Calculate the Electric Potential of a Polarized Half-Cylinder?

  • ShayanJ
  • · Replies 1 ·
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1

High School Light -- how light particles can penetrate through glass?

  • ajaykrishna90
  • · Replies 4 ·
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4

Undergrad How does Bragg's law work for X-rays on atoms?

  • whatisreality
  • · Replies 4 ·
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4

Undergrad Resonance in String: Understanding Wave Interference According to Book

  • AdityaDev
  • · Replies 3 ·
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3

Graduate Interference viewed in the focal plane

  • fayled
  • · Replies 12 ·
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12

Graduate Can I Calculate Satellite Dish Curvature for a Specific Radio Wavelength?

  • Lord_Segan
  • · Replies 3 ·
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3

Undergrad Index of Refraction Through a Cylindrical Tube

  • C. C.
  • · Replies 4 ·
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4

Graduate Linear loss coefficient in Si waveguide at 1550 nm

  • Marvin
  • · Replies 2 ·
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2

Graduate X-ray Diffraction: Crystal Structure vs. Electric Dipole

  • whatisreality
  • · Replies 1 ·
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1

Graduate Deriving TE and TM mode equations for planar waveguides

  • vead
  • · Replies 1 ·
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1

Graduate Does a diffraction grating with a shape form fourier image

  • steph17
  • · Replies 7 ·
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7