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Graduate Are DC circuits similar to AC circuits during switch on/off?

  • Crazymechanic
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Graduate Physics beyond the speed of light.

  • brianhurren
  • · Replies 9 ·
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9

Undergrad What happens to 'unabsorbed' photons?

  • james_aml
  • · Replies 3 ·
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3

Graduate Why does a 90° phase difference in light waves cause slower travel?

  • einstein1921
  • · Replies 1 ·
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1

Undergrad Is Light Both Waves and Particles, or Something Completely Different?

  • adjacent
  • · Replies 4 ·
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4

Graduate Does Fermat's Principle Apply in All Special Cases of Light Path Alteration?

  • zrek
  • · Replies 38 ·
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38

Undergrad Can a projector screen be brighter for highlights and darker for blacks simultaneously?

  • guyburns
  • · Replies 9 ·
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9

Undergrad Theoretical basis for light bending between optical media

  • s0ft
  • · Replies 8 ·
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8

Undergrad Chromatic image through a double circle aperture

  • bhav007
  • · Replies 3 ·
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3

High School Lightning strike blew out odd pieces in my house

  • larrybud
  • · Replies 2 ·
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2

Graduate Fraunhofer diffraction and convolution of two aperture functions

  • Blairo
  • · Replies 1 ·
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1

Undergrad How does a laser create plasma through blooming at high intensity?

  • Kalrag
  • · Replies 7 ·
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7

Undergrad Real vs Unreal Source Refraction Through Lense

  • Ezio3.1415
  • · Replies 25 ·
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25

Graduate Polarised (polarized) light; EM explanation.

  • Roodles01
  • · Replies 3 ·
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3

High School Light reflectivity of emergency blankets for grow lights

  • LifelongStuden
  • · Replies 3 ·
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3

High School What is the reason for the rainbows to be circular?

  • Robertoalva
  • · Replies 8 ·
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8

Undergrad Do both TE and TM modes propagate if they have different speeds in a waveguide?

  • ja!
  • · Replies 2 ·
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2

Undergrad Some questions about spectroscopy

  • stripes
  • · Replies 4 ·
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4

Undergrad Difference between interference and diffraction?

  • MarcL
  • · Replies 7 ·
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7

Graduate Describing the Life of a Photon

  • enceladus_
  • · Replies 24 ·
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24

Undergrad What is wavelength of light a measure of?

  • JosephP
  • · Replies 4 ·
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4

Undergrad Intensity and frequency of radio waves

  • mariano54
  • · Replies 4 ·
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4

Undergrad Do black materials absorb more non-visible EM radiation than white materials?

  • throneoo
  • · Replies 9 ·
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9

Undergrad Does Constructive Interference Double Sound Intensity at Source Point in Water?

  • GT1
  • · Replies 3 ·
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3

Undergrad Temporal and Spatial Coherence

  • elemis
  • · Replies 1 ·
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1

Graduate What will happen for single slit diffraction if?

  • Outrageous
  • · Replies 24 ·
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24

Graduate Can a Photon Have a Perfectly Smooth Orbit?

  • Leon (AW)
  • · Replies 5 ·
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5

Undergrad How determine aspheric lens beam angle?

  • spiffly
  • · Replies 5 ·
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5

Graduate Fourier transformation and light dispersion for spectra analysis

  • xhtp2000
  • · Replies 4 ·
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4

Graduate Maximum light concentration with a lens and etendue conservation

  • LeeW
  • · Replies 7 ·
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7

Undergrad Wave interference and harmonic oscillation

  • einstein1921
  • · Replies 2 ·
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2

Undergrad Will two orthogonally polarized light beams interfere?

  • entropy111
  • · Replies 2 ·
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2

Undergrad Phase change in the reflected wave equation

  • elemis
  • · Replies 1 ·
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1

Graduate Why does acoustic power reflection depend on impedance but not frequency?

  • idmena
  • · Replies 1 ·
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1

Graduate Does Slow Light Respond to Gravity

  • Mcellucci
  • · Replies 15 ·
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15

Undergrad How does a single fiber optic cable transmit millions of signals

  • jaydnul
  • · Replies 11 ·
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11

High School Real image from concave mirror

  • overside
  • · Replies 3 ·
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3

Graduate Feynman's Lectures Refraction Angle question

  • karkas
  • · Replies 4 ·
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4

High School How is the northern lights made?

  • waterliyl
  • · Replies 2 ·
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2

Graduate Can light have longitudinal, temporal, or scalar polarization in a medium?

  • jk22
  • · Replies 2 ·
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2

Graduate Can you change the wavelength of ligh without changing it's direction?

  • Jarfi
  • · Replies 5 ·
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5

High School Does a medium's refractive index affect the distance I perceive through it?

  • Ahmed Samra
  • · Replies 14 ·
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14

Undergrad IR camera in-car windshield reflection and health effects

  • dotancohen
  • · Replies 8 ·
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8

Undergrad Why doesn't light diffract through large slits if Huygens principle always applies?

  • dsanz
  • · Replies 7 ·
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7

Graduate Replicate atmosphere of Earth, scaled down for experimenting

  • astralfx
  • · Replies 9 ·
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9

High School Why Does Light Bend Around Your Finger?

  • 42Physics
  • · Replies 2 ·
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2

Graduate How Can a Lens Microstructure Alter LED Light Wavelengths?

  • Arian DP
  • · Replies 13 ·
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13

Graduate How can diffraction be explanined using the concept of wavelength.

  • A Dhingra
  • · Replies 18 ·
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18

Undergrad Flipping the polarity of a compass needle. Why does this work?

  • Ntstanch
  • · Replies 4 ·
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4

Graduate Precious-Opal and/vs X-Ray Diffraction

  • PMH
  • · Replies 2 ·
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2

Undergrad How to make screens visible in daylight

  • nomisrosen
  • · Replies 4 ·
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4

Undergrad Calculating Biconvex Glass Lens Radius of Curvature for a +35-cm Focal Length

  • Roof
  • · Replies 3 ·
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3

Undergrad Diffraction Limit Sample for Microscope

  • entropy111
  • · Replies 3 ·
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3

Undergrad Young's double slit and coherent light

  • sorax123
  • · Replies 4 ·
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4

Undergrad Speed of light and snell's law

  • cabrera
  • · Replies 15 ·
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15

High School Angle between incident and reflected rays on a horizontal surface

  • manofslate
  • · Replies 3 ·
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3

Undergrad How Does Light Reflect from Matter at the Subatomic Level?

  • adjacent
  • · Replies 7 ·
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7

Undergrad What are caustics as they apply to optics?

  • solarblast
  • · Replies 8 ·
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8

Graduate Amount of scattering calculated from scattering cross section

  • wc2351
  • · Replies 4 ·
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4

Graduate Can Monochromatic Photons Exist in Electromagnetic Waves?

  • sudu.ghonge
  • · Replies 4 ·
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4

Undergrad Fiber optics: using continous variation refractive indexes hold light?

  • tsuwal
  • · Replies 2 ·
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2

Graduate Calculating EM field using only cross-section of past light cone?

  • JesseM
  • · Replies 12 ·
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12

Graduate Polarizations of plane waves propagating in anisotropic media

  • loehre
  • · Replies 12 ·
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12

Graduate Telecentric lens focusing at infinity and image formation

  • jasonpatel
  • · Replies 8 ·
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8

High School UV Light and UV glue And Sunlight

  • John1397
  • · Replies 2 ·
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2

Graduate Reflectance of a glass slab using Fresnel equations

  • jlefevre76
  • · Replies 2 ·
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2

Undergrad Can a Laser Amplify Multiple Wavelengths Simultaneously?

  • Low-Q
  • · Replies 4 ·
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4

Undergrad Destructive Interference and coherent light in anti-phase

  • Johnahh
  • · Replies 10 ·
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10

Graduate OPTICS: How to solve a two lens system with the object in a medium?

  • clalburn1420
  • · Replies 1 ·
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1

High School How Do I Calculate the Focal Distance?

  • SFBKR
  • · Replies 1 ·
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1

Undergrad Why can't we see objects smaller than wavelength of visible light?

  • iVenky
  • · Replies 5 ·
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5

Graduate Linear Polarization Experiment Question

  • sirzerp
  • · Replies 2 ·
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2

Undergrad Why unequal fringe width in Michelson interference pattern?

  • sree.
  • · Replies 5 ·
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5

Undergrad Spectral lines and absorption lines

  • stfaivus
  • · Replies 4 ·
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4

Graduate Sound Wave Scattering: Interface Total Potential?

  • nawidgc
  • · Replies 2 ·
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2

Graduate What determines if a photon is absorbed?

  • Jarfi
  • · Replies 3 ·
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3

Graduate Fields of a very short laser pulse, pulse a fraction of wavelength.

  • Spinnor
  • · Replies 9 ·
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9

Graduate Does this mean the speed of x ray faster than light in vaccum

  • einstein1921
  • · Replies 9 ·
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9

High School Why Do Fingerprints Appear on Glass When It's Filled with Water?

  • Numeriprimi
  • · Replies 3 ·
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3

Undergrad Turning on a flashlight at 98 of c

  • hellfire695
  • · Replies 4 ·
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4

Undergrad Modelling flight path of a golf ball

  • PeterBucket
  • · Replies 1 ·
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1

Graduate Can a Single Photon Be Directly Observed?

  • MargaretePS
  • · Replies 19 ·
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19

High School What affects the light intensity and light output geometry?

  • Minhtran1092
  • · Replies 1 ·
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1

Graduate Optical tweezers, QPD back focal plane interferometry vs imaging

  • donroy81
  • · Replies 3 ·
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3

High School LED - Measuring light intensity

  • theonlysnowman
  • · Replies 10 ·
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10

Graduate Powered sphere completely surrounded by perfect mirrors

  • KLindem
  • · Replies 5 ·
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5

Graduate One-way mirror behavior with a perfectly reflective surface

  • Joseph King
  • · Replies 3 ·
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3

Undergrad Assigning Polarities and using them in KVL equation, circuits

  • wahaj
  • · Replies 3 ·
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3

High School What Is Oscillating at Right Angles to Wave Propagation in AS Level Physics?

  • Johnahh
  • · Replies 22 ·
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22

Undergrad Cloaking devices with negative refractive index metamaterials

  • abhiroop_k
  • · Replies 2 ·
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2

Undergrad Calculating Illuminance of a panel light

  • GearlooseHC
  • · Replies 1 ·
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1

Undergrad Dichroic mirror spectral range?

  • geneiusxie
  • · Replies 3 ·
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3

High School Converting c² from m²/s² to m/s

  • ebodet18
  • · Replies 3 ·
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3

Graduate How to Define Lattice Properties for Octagonal PCF in OptiFDTD 8?

  • dimplebansal
  • · Replies 10 ·
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10

Undergrad UV and IR Light: Common Misconceptions and Questions

  • SUDOnym
  • · Replies 8 ·
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8

Undergrad Why sound reflects at the open end of a resonance tube

  • hds123523000
  • · Replies 27 ·
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27

Undergrad Is there a special term for refractive indices when 1 is subtracted?

  • richyw
  • · Replies 1 ·
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1

Undergrad Experiments Involving Lasers and Optics

  • Niteo
  • · Replies 7 ·
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7

Undergrad Coloured light on complementary surface

  • cognaq
  • · Replies 4 ·
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4

Graduate Can we obtain a permanently polarized ice?

  • oxivixo
  • · Replies 2 ·
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2