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Undergrad Why does glass get hot in a microwave if microwaves don't affect it?

  • RestlessMind
  • · Replies 6 ·
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6

Undergrad Light vs Radio attenuation in water

  • Major25
  • · Replies 1 ·
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1

High School Which color reflect UV light best?

  • Stanley514
  • · Replies 5 ·
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5

Graduate Mie/Rayleigh Phase Function Differences

  • Steleo
  • · Replies 6 ·
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6

Undergrad What is the difference between ?

  • physics love
  • · Replies 4 ·
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4

High School Where Does Electromagnetic Energy Go?

  • mak_phy
  • · Replies 1 ·
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1

Undergrad Images formed between two mirrors at an angle

  • pkpaul26
  • · Replies 1 ·
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1

High School Why Do Sunglasses Have Zero Power?

  • pkpaul26
  • · Replies 2 ·
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2

Undergrad Does a mirrored ceiling increase photon count in a room with a candle?

  • spectragal
  • · Replies 15 ·
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15

Why does a fan wing appear blue on one edge and yellow on the other?

  • ashishsinghal
  • · Replies 9 ·
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9

Undergrad Do electrons get deflected by a laser beam's E and B fields?

  • cragar
  • · Replies 7 ·
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7

Graduate Can black lines on a mirror cause diffraction of light?

  • cragar
  • · Replies 2 ·
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2

High School Why I can burn a paper with magnifying glass and sun?

  • Physicsissuef
  • · Replies 36 ·
2
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36

Graduate Lots of questions on wave optics

  • RedX
  • · Replies 6 ·
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6

Graduate Polarization states of light in 2D

  • Jopi
  • · Replies 7 ·
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7

Undergrad Violet light produced from green He-Ne laser?

  • elemental09
  • · Replies 8 ·
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8

Undergrad What is spatial coherence in optics?

  • azatkgz
  • · Replies 4 ·
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4

Graduate How Does Temporal Coherence Relate to Spectral Width in Absorption Features?

  • Thomas Smid
  • · Replies 1 ·
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1

Graduate Do E and B Fields Distort When Focusing Photons with a Lens?

  • jmatejka
  • · Replies 6 ·
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6

Undergrad Why do waves diffract, refract, and reflect?

  • lavalamp
  • · Replies 12 ·
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12

High School Interference occurs, if two waves are said to be coherent

  • Gavroy
  • · Replies 3 ·
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3

Undergrad What is the largest wavelength a photon can pass through a waveguide?

  • henxan
  • · Replies 2 ·
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2

High School Greetings, how does light travel through the glass?

  • amaresh92
  • · Replies 1 ·
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1

Graduate How Do Coherent Waves Maintain Identity in RF Systems?

  • sci-guy
  • · Replies 9 ·
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9

Graduate Scientist makes radio waves travel faster than light

  • drksl
  • · Replies 21 ·
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21

Graduate Do lasers suffer R^2 propagation loss

  • apchar
  • · Replies 25 ·
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25

Undergrad Why does Brewster's angle produce polarized light?

  • kame
  • · Replies 11 ·
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11

Graduate What does diffraction order m mean in dsin θ=mλ?

  • anakat-
  • · Replies 1 ·
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1

Graduate How do compensating Amici prisms work?

  • Borek
  • · Replies 1 ·
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1

Undergrad What color would a door painted with ultraviolet paint appear to be?

  • Grimstone
  • · Replies 15 ·
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15

Undergrad Why does the angle of light through a prism change based on its wavelength?

  • Ambidext
  • · Replies 1 ·
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1

Graduate Color\Light efficiency in imaging systems

  • gillwill
  • · Replies 3 ·
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3

Undergrad Times of flight for projectiles

  • ThomasMagnus
  • · Replies 2 ·
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2

Undergrad Why Do LCD Monitors Have Limited View Angle?

  • nanda gopal
  • · Replies 4 ·
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4

Graduate Phase Change over Distance: Understanding k and l in Wave Analysis

  • spaghetti3451
  • · Replies 1 ·
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1

Undergrad How does light intensity decrease as it travels through air?

  • linearmot
  • · Replies 1 ·
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1

Undergrad Young's double slit expt - purpose of the first slit

  • ap_cycles
  • · Replies 7 ·
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7

Graduate Do photons actually travel from point A to point B?

  • jnorman
  • · Replies 14 ·
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14

Graduate Question: Time in Zero Velocity as Opposed to Light-Speed

  • TalEly
  • · Replies 2 ·
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2

Graduate Path difference in Fabry-Perot etalon

  • hadoque
  • · Replies 2 ·
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2

Graduate How to Safely Clean and Remove Residues from a Polarizing Beamsplitter Cube

  • pmehnati
  • · Replies 2 ·
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2

Graduate Scientists build world's first anti-laser

  • Synetos
  • · Replies 1 ·
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1

Graduate Kirchoff's radiative balance law and polarisation of emitted light

  • Mark.R
  • · Replies 5 ·
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5

High School How Does a Mirror Work and Why Doesn't It Look Blue?

  • ashishsinghal
  • · Replies 6 ·
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6

Undergrad Why is energy loss zero in total internal reflection?

  • kimmy510
  • · Replies 6 ·
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6

High School How can i calculate the brightness of moon's light at night on the earth?

  • rony01
  • · Replies 6 ·
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6

High School Why Don’t Photons Get Trapped Forever Between Two Mirrors?

  • ThalesI
  • · Replies 13 ·
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13

Graduate Laser Beam Destructive Interference

  • GRB 080319B
  • · Replies 5 ·
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5

Graduate Why do x rays travel faster than light in some states of matter

  • Gobil
  • · Replies 7 ·
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7

Undergrad How Does the Laser Impact the Functioning of an Ion Thruster?

  • Kainchild
  • · Replies 3 ·
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3

Graduate Can Photons Interact with Each Other Through Electron Mediation?

  • Lazernugget
  • · Replies 25 ·
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25

Undergrad How Do Optic Fibers Minimize Interference While Transmitting Information?

  • kimmy510
  • · Replies 3 ·
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3

Undergrad Why is D = εE + P if polarization opposes the field?

  • sk21
  • · Replies 6 ·
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6

Graduate Is Light Truly Discrete or Merely a Manifestation of Matter's Nature?

  • pergradus
  • · Replies 1 ·
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1

High School Driving Through a Rainbow: A Real Life Story

  • Catrionna
  • · Replies 1 ·
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1

Graduate Determining Path Length in a Double Slit Experiment

  • CINA
  • · Replies 1 ·
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1

Undergrad Sources for the diffracted waves

  • RedX
  • · Replies 3 ·
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3

High School Why Does Light Disappear When the Source is Turned Off?

  • Rose Garden
  • · Replies 3 ·
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3

Undergrad Light absorption losses in reflection versus refraction

  • benmww
  • · Replies 1 ·
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1

Graduate Feynman says photons ARE particles

  • ihatelolcats
  • · Replies 19 ·
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19

Graduate Laser beams in the frequency range of of microwaves

  • lost_in_space
  • · Replies 1 ·
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1

Undergrad Snell's law and the concept of critical angle

  • Borek
  • · Replies 15 ·
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15

High School Does red light pass through red glass and other colored filters?

  • MaterSammichM
  • · Replies 1 ·
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1

Undergrad Light and our rate of perception

  • OphiuchiRh0
  • · Replies 1 ·
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1

Graduate Optical Phase Detection Techniques for Improved Noise Floors in Interferometers

  • Manchot
  • · Replies 1 ·
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1

Graduate What would happen if an ICBM was hit by a 1.3 petawatt laser?

  • bestar
  • · Replies 33 ·
2
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33

Graduate Entangled Frankenstein Photons

  • DrChinese
  • · Replies 11 ·
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11

Graduate Extending Malus's law to the general case.

  • yuiop
  • · Replies 1 ·
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1

Graduate Question on derivation of Fresnel's equation in Griffiths

  • yungman
  • · Replies 6 ·
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6

Graduate What equation describes laser beam damping in air?

  • dmriser
  • · Replies 2 ·
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2

Undergrad How photons create an image via the brain

  • boffinwannabe
  • · Replies 10 ·
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10

Undergrad Why does blue light mixed with yellow light appear green?

  • mrspeedybob
  • · Replies 5 ·
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5

Undergrad Application of microwave beams

  • lost_in_space
  • · Replies 10 ·
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10

Undergrad Can you determine EM wave direction if the wave passes through your antenna?

  • lenfromkits
  • · Replies 6 ·
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6

Graduate 180 degree Compton Scattering: low versus high energy initial photon

  • ltarhab
  • · Replies 5 ·
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5

High School How does my microwave oven affect a wireless router?

  • Naty1
  • · Replies 9 ·
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9

High School Why do a piano and penny fall at different rates than a feather?

  • tatiana
  • · Replies 5 ·
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5

Undergrad Curvature of an Artificial Rainbow (created in Lab).

  • leoflindall
  • · Replies 18 ·
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18

Undergrad The nature of light from colored(visual) materials

  • chris2112
  • · Replies 2 ·
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2

Undergrad If photons have no mass, then how can they travel the speed of light?

  • thomasxc
  • · Replies 33 ·
2
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33

Graduate Question on TEM representation used in Griffiths book

  • yungman
  • · Replies 7 ·
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7

High School Where Does the Green Go at Twilight?

  • kompabt
  • · Replies 2 ·
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2

High School My Puzzle: Does Light Travel Instantly in a Smaller Scale?

  • deepspacest3
  • · Replies 5 ·
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5

Undergrad How do Fresnel lenses converge light with a flat face?

  • Pranav Jha
  • · Replies 9 ·
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9

Graduate Why don't atoms collapse when electrons emit photons?

  • v_pino
  • · Replies 2 ·
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2

Undergrad Change in velocity of light with change in optical density

  • utkarsh009
  • · Replies 1 ·
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1

Changing the Surface of an object

  • Kalrag
  • · Replies 1 ·
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1

High School How does refractive index matching make a solid disappear in a liquid?

  • baileya
  • · Replies 2 ·
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2

High School A interesting phenomenon about fingerprints and liquids

  • hchs9818
  • · Replies 2 ·
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2

Graduate Precession of a football in flight

  • tjs53
  • · Replies 8 ·
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8

Undergrad Making a Fresnel Lens for Solar Water Purification

  • Pranav Jha
  • · Replies 1 ·
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1

Graduate Why are absolute zero and speed of light cosmic speed limits?

  • DaFreak
  • · Replies 15 ·
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15

Undergrad Can You Measure the Speed of Light at Home Like 19th Century Scientists?

  • hy23
  • · Replies 1 ·
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1

Undergrad Why Is Light Considered a Wave When It Travels Without a Medium?

  • utkarsh009
  • · Replies 3 ·
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3

Undergrad Determining X-ray strength and exposure

  • GrimCrimson
  • · Replies 2 ·
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2

High School How Can You Measure Light Wavelengths Using Microscope Slides and Rubber Bands?

  • alikim
  • · Replies 2 ·
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2

Graduate Can I resolve a 100 MHz peak with 0.5 nm spectral resolution?

  • Niles
  • · Replies 8 ·
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8

High School Understanding Real vs Virtual Objects in Convergent/Divergent Lenses

  • kususe
  • · Replies 1 ·
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1

High School Question - Atmospheric Perspective

  • hannaheart13
  • · Replies 2 ·
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2

Graduate Find Parallel Polarized E Field Reflection Direction

  • yungman
  • · Replies 1 ·
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1