Optics Forum

Post thread

Threads

High School Possible for a torch to light up a wall

  • stev
  • · Replies 8 ·
Replies
8

High School Do photons have mass or are they only energy?

  • chound
  • · Replies 4 ·
Replies
4

Undergrad Why are oil puddle colors more visible on overcast days?

  • cepheid
  • · Replies 1 ·
Replies
1

High School Is there a difference in speed between blue light and yellow light in air?

  • knox_122
  • · Replies 6 ·
Replies
6

Undergrad Can impurities or density in glass affect the speed of light?

  • knox_122
  • · Replies 6 ·
Replies
6

Graduate Can Light Be Slowed? IBM Readies Silicon Chip

  • desiguy8179
  • · Replies 2 ·
Replies
2

High School Can class IIIB lasers show a visible beam without smoke or fog?

  • Anzas
  • · Replies 21 ·
Replies
21

High School How to recreate 1st prize photo of the Einstein Year Award?

  • cappez
  • · Replies 8 ·
Replies
8

Undergrad C is only a component of light speed?

  • Quadratic
  • · Replies 4 ·
Replies
4

High School Theoretical Black and White Filter

  • ShadowedLXVIII
  • · Replies 7 ·
Replies
7

Undergrad Same focus for all circular lenses?

  • InFiNitY1
  • · Replies 3 ·
Replies
3

Undergrad Do Particle-Antiparticle Annihilations Produce Photons?

  • 2bootspizza
  • · Replies 3 ·
Replies
3

Graduate Can Photons Really Split into Multiple Photons?

  • professor
  • · Replies 4 ·
Replies
4

Undergrad Could a laser beam stay narrow over light-year distances?

  • RunDMC
  • · Replies 8 ·
Replies
8

Graduate What Causes Lattice-Like Aberrations in a Gaussian Laser Beam Path?

  • silin
  • · Replies 4 ·
Replies
4

Undergrad Why does wavelength determine whether waves diffract through a gap?

  • sebastianhorvath
  • · Replies 6 ·
Replies
6

Undergrad Light Particles: Smallest Known Particles and Their Differences

  • Tyson
  • · Replies 4 ·
Replies
4

High School Why does a laser beam spread over distance?

  • pallidin
  • · Replies 16 ·
Replies
16

Graduate What happens to a Mach cone when the sound source frequency changes?

  • brasilr9
  • · Replies 5 ·
Replies
5

High School Easy way to remember imaging properties of lens?

  • positron
  • · Replies 2 ·
Replies
2

High School Is light a particle, a wave, or both?

  • Chipper
  • · Replies 26 ·
Replies
26

Undergrad Why do motorless cars prioritize light weight over heavier weight?

  • ShawnD
  • · Replies 3 ·
Replies
3

Graduate Can we measure an electron's energy before and after it emits a photon?

  • Plastic Photon
  • · Replies 1 ·
Replies
1

Undergrad What happens to light trapped in a closed sphere?

  • Mau
  • · Replies 6 ·
Replies
6

High School Does light change speed in Earth's atmosphere?

  • randy23
  • · Replies 12 ·
Replies
12

Undergrad Can Single Photons Produce Interference Patterns in Young's Experiment?

  • extreme_machinations
  • · Replies 4 ·
Replies
4

Graduate How can Fourier Optics be used to analyze and explain experimental physics?

  • JamesJames
  • · Replies 7 ·
Replies
7

Undergrad Why don't we see a change in color when looking at a mirror?

  • andytran
  • · Replies 2 ·
Replies
2

Are fluorescent light bulbs bad for your eyes?

  • Mozart
  • · Replies 1 ·
Replies
1

Undergrad When it comes to the Young's Double Slit Experiment, I'm just wondering

  • insertnamehere
  • · Replies 1 ·
Replies
1

High School Why some things are transparent while others not?

  • Sandeep Chalia
  • · Replies 1 ·
Replies
1

High School What exactly does polarization of light mean?

  • Erkenbrand
  • · Replies 5 ·
Replies
5

High School Can the index of refraction of a substance be altered by an external action?

  • Erkenbrand
  • · Replies 14 ·
Replies
14

Graduate Can a perfect mirror melt from radiation?

  • mezarashi
  • · Replies 3 ·
Replies
3

Undergrad Index of Refraction: Most Dynamic Substance

  • Erkenbrand
  • · Replies 3 ·
Replies
3

Undergrad The Physics of Colors: Do Colors Exist Beyond Human Vision?"

  • NutriGrainKiller
  • · Replies 2 ·
Replies
2

High School What does light travel through?

  • nanolution
  • · Replies 7 ·
Replies
7

High School Why does a mirror flip left and right but not up and down?

  • touqra
  • · Replies 3 ·
Replies
3

Graduate How do you distinguish Fresnel and Fraunhofer diffraction mathematically?

  • mntb
  • · Replies 7 ·
Replies
7

Undergrad Learning the electrooptic effect and modulation

  • hen
  • · Replies 1 ·
Replies
1

High School Why does the sun generate white light?

  • alias25
  • · Replies 2 ·
Replies
2

Graduate Can light waves interfere constructively like sound waves do?

  • mjasin
  • · Replies 9 ·
Replies
9

Undergrad Relation between light and sound speed

  • sombrancelha
  • · Replies 4 ·
Replies
4

Graduate Can anyone recommend a book on laser ring gyroscopes?

  • Pryz
  • · Replies 1 ·
Replies
1

High School What does 10 nanosecond laser pulse mean?

  • touqra
  • · Replies 9 ·
Replies
9

High School Cosmic particles result in lightning

  • blimkie
  • · Replies 4 ·
Replies
4

High School Can light be trapped indefinitely in a mirrored sphere?

  • alkammy
  • · Replies 4 ·
Replies
4

High School Is it the meadiem Light waves effect?

  • Whitedragon
  • · Replies 20 ·
Replies
20

High School Don't Understand Why I See Moving Pencils

  • Mozart
  • · Replies 9 ·
Replies
9

High School Can You See Other Stars While Sitting on the Sun?

  • jjw004
  • · Replies 6 ·
Replies
6

High School Does light have mass?

  • wonofdaweefolk
  • · Replies 2 ·
Replies
2

Undergrad How Do Double Concave Mirrors Create a Floating Image?

  • mrjeffy321
  • · Replies 1 ·
Replies
1

High School How do rainbows form?

  • MichaelMansfield
  • · Replies 2 ·
Replies
2

Graduate What is the Damping Term of a Photon?

  • Watts
  • · Replies 5 ·
Replies
5

Graduate Changing the speed of light in materials

  • Cladson
  • · Replies 9 ·
Replies
9

Undergrad What are 1st, 2nd and 3rd order lens aberrations?

  • OPTIDONN
  • · Replies 3 ·
Replies
3

Graduate Young's double slit experiment using polarised light

  • Reshma
  • · Replies 1 ·
Replies
1

High School The size of the sun using pinhole imagery

  • taylorb
  • · Replies 4 ·
Replies
4

Undergrad Why are sound waves reflected at an open pipe end?

  • BigMacnFries
  • · Replies 5 ·
Replies
5

Graduate Mirror Image Problems in Electrodynamics

  • heman
  • · Replies 1 ·
Replies
1

High School The Sun's Light: 8mins, 2degrees & Us

  • Sameer
  • · Replies 5 ·
Replies
5

High School Home Depot/ Radio Shack speed of light?

  • bblupton
  • · Replies 6 ·
Replies
6

Graduate Space Ships faster than light.

  • OnTheCuttingEdge2005
  • · Replies 2 ·
Replies
2

Graduate How do intensity and radius of the Poisson spot vary with distance?

  • Dan Forth
  • · Replies 3 ·
Replies
3

High School Does a photon correspond to one wavelength of a wave

  • Ratzinger
  • · Replies 5 ·
Replies
5

High School Finding the size of a photographed image

  • asa!!
  • · Replies 19 ·
Replies
19

Undergrad Is lightning caused by ice particles?

  • Mk
  • · Replies 1 ·
Replies
1

Undergrad Ray of light travels from an optically denser medium

  • Rainbow
  • · Replies 6 ·
Replies
6

Undergrad Stunning Revolution in Physics or dumb Newspaper?

  • Lyuokdea
  • · Replies 6 ·
Replies
6

Undergrad Why Does Adding a Third Polarizing Filter Let Light Pass Through?

  • James Jackson
  • · Replies 31 ·
2
Replies
31

Graduate Apparent speed of light in transparent medium

  • bakshi
  • · Replies 4 ·
Replies
4

Graduate Dynamics, polar coordinate system

  • bartieshaw
  • · Replies 1 ·
Replies
1

High School Stunning Fish Optics: How Fish See Above the Water

  • Kaluence
  • · Replies 2 ·
Replies
2

High School Can you calculate camera field of view from distance and wall size?

  • asa!!
  • · Replies 4 ·
Replies
4

High School What is the physics of a lighting ball?

  • box
  • · Replies 9 ·
Replies
9

High School Can mirrors focus an incandescent bulb's light into a laser-like beam?

  • Jake
  • · Replies 7 ·
Replies
7

Undergrad Why does destructive interference eliminate light instead of letting it continue?

  • Craig113
  • · Replies 10 ·
Replies
10

High School Can I calculate FOV by measuring a photographed wall at different distances?

  • asa!!
  • · Replies 2 ·
Replies
2

Graduate Simple Diffraction: Deriving Equations with Phasors

  • Manchot
  • · Replies 4 ·
Replies
4

High School Why does light disperse through a prism but not a glass slab?

  • Rainbow
  • · Replies 3 ·
Replies
3

High School Adjustment of optics resources

  • silin
  • · Replies 7 ·
Replies
7

High School What Causes Total Internal Reflection?

  • Reshma
  • · Replies 1 ·
Replies
1

Graduate Creating Daltonism Glasses: Is it Possible?

  • SAZAR
  • · Replies 2 ·
Replies
2

Graduate Does anyone know where I could find this?

  • fizixx
  • · Replies 2 ·
Replies
2

High School How Does Focal Length Affect the Focus Point of a Lens?

  • asa!!
  • · Replies 3 ·
Replies
3

High School Can You Upgrade an Old Microscope Like the Ergolux ZL-19 with Modern Features?

  • hen
  • · Replies 1 ·
Replies
1

Undergrad Interference between non-sinusoidal waves

  • ArleighBurke
  • · Replies 8 ·
Replies
8

High School What Happens to Light when Heated - Baking Samosas

  • amt
  • · Replies 7 ·
Replies
7

High School Why does light pass through transparent objects but not opaque ones?

  • sstp
  • · Replies 5 ·
Replies
5

Graduate Is light composed of strings ?

  • Chris Walters
  • · Replies 2 ·
Replies
2

Undergrad How to interpret the transmission curve in a Z-scan experiment

  • photons
  • · Replies 3 ·
Replies
3

Graduate Safety limits for 15 mW laser in the eye during fiber coupling

  • silin
  • · Replies 13 ·
Replies
13

High School Why do laser beams produce speckle patterns on surfaces?

  • Lord Loh.
  • · Replies 5 ·
Replies
5

Undergrad Diffraction occurs also for water waves or only for light and matter?

  • quasar987
  • · Replies 13 ·
Replies
13

Undergrad Lightning strikes a swimming pool

  • primarygun
  • · Replies 3 ·
Replies
3

Undergrad Quanta vs. Photon: What's the Difference?

  • OPTIDONN
  • · Replies 1 ·
Replies
1

High School How does a laser listening device work?

  • extreme_machinations
  • · Replies 13 ·
Replies
13

Undergrad Why does a painted figure stay the same size but a distant person looks smaller?

  • Lars Laborious
  • · Replies 5 ·
Replies
5

Graduate Reformatting of Fermat's Principle

  • Dr.Brain
  • · Replies 2 ·
Replies
2

High School Scientists cover the mirror with a stratum that doesn't hold water

  • sitokinin
  • · Replies 2 ·
Replies
2