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Undergrad Are x-rays absorbed only by dense matter like bone?

  • Biologik
  • · Replies 4 ·
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4

Graduate Describing a color with half the intensity of 600 nm in CIE chromaticity

  • posixbar
  • · Replies 10 ·
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10

Undergrad Geometric optics and photography

  • KFC
  • · Replies 5 ·
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5

Undergrad Force on a pipeline bend with gradual diameter reduction

  • xxninixx
  • · Replies 1 ·
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1

Undergrad Can Light Be Trapped Between Mirrors and Is There Energy Loss?

  • abc007
  • · Replies 4 ·
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4

Undergrad Why is the Speed of Light what it is

  • roy_e17
  • · Replies 4 ·
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4

Undergrad Why does glass not permit long wavelength infrared to pass through?

  • quantum123
  • · Replies 5 ·
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5

Graduate Need to release as a LASER beam in order to ionize a certain substance

  • gabrielshier
  • · Replies 2 ·
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2

Graduate X-Ray Emission from Synchrotrons vs. Cyclotrons

  • oldmisery
  • · Replies 3 ·
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3

Undergrad Why does wire mesh reflect radio waves if holes are smaller than 1/10 wavelength?

  • aster79
  • · Replies 2 ·
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2

Undergrad Power of laser vs Power of X-ray

  • Si14
  • · Replies 11 ·
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11

Undergrad Gravity Affects Light: Is What We See Real?

  • Karoka
  • · Replies 5 ·
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5

Graduate Speed of light in a medium other than vacuum

  • fluidistic
  • · Replies 5 ·
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5

Undergrad Understanding Infrared Light Sensors and the Inverse Square Law

  • fluidistic
  • · Replies 10 ·
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10

Graduate If light has momentum then wouldn't it have force?

  • zeromodz
  • · Replies 48 ·
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48

Undergrad Why are ants immune to microwaves?

  • Sakha
  • · Replies 1 ·
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1

High School How is light produced in the following?

  • Biologik
  • · Replies 2 ·
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2

High School How are real and virtual images formed in a concave mirror?

  • Gale
  • · Replies 6 ·
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6

Undergrad Can Multiple Laser Beams Be Combined into a Single Powerful Beam?

  • CosmicVoyager
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3

Graduate Why does a microwave oven heat food faster than a black body?

  • fluidistic
  • · Replies 7 ·
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7

High School How to draw the image of an object behind a mirror and refraction basics

  • Jadaav
  • · Replies 3 ·
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3

Undergrad Why Do We See an Apple as Red?

  • Biologik
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1

Undergrad Inverse square law and superposition.

  • DukeofDuke
  • · Replies 4 ·
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4

Graduate At what point does light come into existence from when it leaves its source?

  • freshnfree
  • · Replies 2 ·
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Graduate Do lightwaves exist? and what exactly is light?

  • the4thamigo_uk
  • · Replies 36 ·
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Graduate What Are the Best Optical Filters for Diverging Light?

  • tommyers
  • · Replies 6 ·
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6

Graduate Priciple of Optical Reversibility - How can it be proved?

  • metalrose
  • · Replies 9 ·
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9

Graduate Phase change in total internal reflection from water to glass

  • htg
  • · Replies 10 ·
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10

Graduate Altitude, gravity, and air density effects on flight

  • brainstorm
  • · Replies 11 ·
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11

Graduate How diffraction of a wave through a aperture in terms of the uncertain

  • Flupdoodle
  • · Replies 5 ·
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5

Graduate Spatial Light Modulator to remove high intensity light

  • cyber stealth
  • · Replies 1 ·
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1

High School What is the significance of Q in understanding curved mirrors?

  • FizixFreak
  • · Replies 9 ·
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9

Undergrad How to send and receive radio waves?

  • jonathanplumb
  • · Replies 16 ·
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16

Undergrad Polarization of laptop display

  • Razzor7
  • · Replies 1 ·
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1

High School Colors in white light visible to the naked eye?

  • lnrbm
  • · Replies 12 ·
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12

Undergrad Why the Sun's Light is a Continuous Spectrum of Visible Range

  • cragar
  • · Replies 8 ·
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8

Punches his opponent at the speed of light

  • FizixFreak
  • · Replies 18 ·
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Graduate Optical Tweezers: Intuitive Explanation

  • johng23
  • · Replies 5 ·
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5

Undergrad A question of combining laser light

  • motorman
  • · Replies 12 ·
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12

High School Where does light go when we switched off the Source of light.

  • Alyrehan
  • · Replies 4 ·
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4

High School Which materials reflect radio waves?

  • Lukas1121
  • · Replies 6 ·
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Graduate Materials with an index of refraction of zero

  • Trexman89
  • · Replies 1 ·
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Graduate Why does polarizing light make sense if EM waves are already polarized?

  • ananthu
  • · Replies 8 ·
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8

Undergrad Can a Laser Really Shoot Down a Drone? Watch the US Navy's 30 Second Video!

  • Naty1
  • · Replies 5 ·
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5

Graduate Why does light undergo a phase change when reflecting from a denser medium?

  • metalrose
  • · Replies 1 ·
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Graduate Monochromatic to Polychromatic Laser beam

  • dustydude
  • · Replies 5 ·
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5

Undergrad Why does my reflection disappear when I look in a mirror with 3D glasses on?

  • BkBkBk
  • · Replies 6 ·
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6

High School What is the Difference Between Real and Virtual Images Formed by Mirrors?

  • zainahmed1994
  • · Replies 4 ·
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4

Undergrad Colour (RGB/HSV/HSL) to wavelength.

  • Archeleus
  • · Replies 8 ·
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8

High School Why does light behave as a wave in transit but as a particle when observed?

  • fawk3s
  • · Replies 7 ·
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7

High School How to see infrared with the naked eye

  • bomme08814
  • · Replies 12 ·
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12

Undergrad Visible light Absorption Spectra vs Color of mineral

  • mubashirmansoor
  • · Replies 6 ·
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6

Undergrad Why Is My DIY Laser Sound Project Not Working?

  • noianiz
  • · Replies 3 ·
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3

Graduate Lasers - energy per round-trip

  • yoni3468
  • · Replies 1 ·
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Graduate Observation, wavelength and resolution

  • the4thamigo_uk
  • · Replies 3 ·
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3

Graduate Maximum efficiency of converting sunlight to work

  • cesiumfrog
  • · Replies 23 ·
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23

Undergrad Why does sunlight through a slit between curtains form circles of light?

  • sparky04
  • · Replies 9 ·
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9

Undergrad How do diffraction and refraction affect wave propagation?

  • hasan_researc
  • · Replies 7 ·
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7

Undergrad Witnessing Colorful Interference Patterns with a Benham Top

  • cragar
  • · Replies 4 ·
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4

Undergrad Optics question - eyes and cameras, and the mythical 50mm lens

  • jt7747
  • · Replies 35 ·
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Graduate Speed inorder to shift green light to blue light?

  • Moviemann345
  • · Replies 4 ·
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4

Graduate Photon Annihilation, where does the energy go?

  • azaharak
  • · Replies 11 ·
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11

Undergrad Are photons much older than stars?

  • vitaminZ
  • · Replies 15 ·
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15

High School Why is light not visible when it travels.

  • binbots
  • · Replies 8 ·
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8

Graduate Slowing Light Down to Photograhable Speeds?

  • Lamented_Soul
  • · Replies 5 ·
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5

Graduate Does Huygens's principle apply only to diffraction, not all light?

  • azaharak
  • · Replies 10 ·
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10

High School Laser Cutting Machines: What Cuts Steel?

  • Dav333
  • · Replies 3 ·
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3

High School Does increasing voltage speed up a homopolar motor?

  • Martismo
  • · Replies 1 ·
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1

Undergrad Fresnel Lens Array - Focal Point Question

  • Fritzo130
  • · Replies 1 ·
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1

Undergrad Converting Transmission to Absorbance (Optics)

  • csnsc14320
  • · Replies 1 ·
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1

Graduate Can the Speed of Light be Greater than c?

  • smslca
  • · Replies 7 ·
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7

High School What happens to polarised light?

  • very_curious
  • · Replies 4 ·
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4

Undergrad Terms to describe these patterns

  • Vectory
  • · Replies 1 ·
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1

Graduate Could gravity have 2 components like a photon

  • cragar
  • · Replies 3 ·
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3

Graduate How does wavelength dependence of refractive index cause dispersion?

  • fysikjatack
  • · Replies 1 ·
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1

Undergrad How is overall transmittance calculated from spectral curves?

  • apendleton
  • · Replies 3 ·
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3

Graduate Questions regarding light and dark

  • Mr Hez
  • · Replies 5 ·
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5

Graduate Confusion over real and complex versions of the same quantities

  • Squeegee
  • · Replies 2 ·
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2

Graduate Polarising Sound: Restricting to One Direction Underwater

  • willykilly
  • · Replies 3 ·
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3

Graduate Just want to see if my understanding of the photon is correct

  • TubbaBlubba
  • · Replies 12 ·
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12

High School Do light waves reflect backwards like water waves ripple back from a wall?

  • dankelly08
  • · Replies 6 ·
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6

High School Why do two facing mirrors create multiple reflections?

  • AaronGaTech
  • · Replies 1 ·
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1

Graduate Destructive interference and Conservation of energy

  • FDGSa
  • · Replies 10 ·
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10

Undergrad Gamma/Radio waves through solids

  • Infrasound
  • · Replies 7 ·
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7

Undergrad Are All Waves Sinusoidal, or Are There Non-Sinusoidal Waveforms?

  • jmatejka
  • · Replies 8 ·
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8

Graduate Accuracy of Kirchhoff diffraction theory

  • Sam_Goldberg
  • · Replies 6 ·
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6

Undergrad White Light Scanning: How Does it Work?

  • Ranger Mike
  • · Replies 0 ·
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0

Graduate Electron Interference: Scanning Electron Microscope

  • cragar
  • · Replies 4 ·
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4

Graduate Consider a diffuse (Lambertian) emitter

  • mnb96
  • · Replies 6 ·
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6

Undergrad Why is the speed of light in a vacuum considered the ultimate limit?

  • 13habelbrea
  • · Replies 3 ·
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Undergrad Speed of light through moving liquid

  • Grips
  • · Replies 16 ·
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16

Undergrad Max theoretical resolution of scanned images.

  • Energize
  • · Replies 5 ·
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5

Undergrad Do photons cause electrons to accelerate in an atomic orbital?

  • cragar
  • · Replies 10 ·
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10

Graduate How Can Spacecraft Travel Faster Than Light?

  • azice
  • · Replies 9 ·
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9

Undergrad Raman Spectroscopy: Stokes and Anti-Stokes Wavelengths

  • sebitab
  • · Replies 2 ·
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Undergrad Can Refraction and Interference Both Cause Iridescent Effects?

  • GRB 080319B
  • · Replies 1 ·
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Graduate Light bouncing forever in a mirrored box with perfect reflectors

  • ellie.l
  • · Replies 18 ·
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18

Undergrad Interference Pattern Properties

  • jaketodd
  • · Replies 16 ·
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Graduate Does White Light Exist? (And two possible explanations for black lines)

  • nonequilibrium
  • · Replies 4 ·
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4

Graduate Light at Absolute Zero: Answers to Your Questions

  • ravisastry
  • · Replies 3 ·
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3