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Undergrad Compact fluorescent light bulb in microwave

  • cragar
  • · Replies 12 ·
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12

High School What Does a Negative Absorbance Reading Indicate?

  • rick112
  • · Replies 3 ·
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3

Undergrad How do we know that light is a wave

  • cnidocyte
  • · Replies 6 ·
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6

Graduate Understanding Radiometry: Calculating Radiance at Point P (0,0,0)

  • mnb96
  • · Replies 5 ·
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5

Safe Fluid Flow in Modified Microwaves: How to Protect Yourself?

  • MrSandman
  • · Replies 1 ·
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1

Undergrad Light Absorption Mechanism: Electrons, IR, UV Heating

  • JaWiB
  • · Replies 4 ·
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4

Undergrad Color changing beads under cellophane

  • c.s.
  • · Replies 14 ·
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14

Undergrad Calculation of size from images at unknown distance

  • ixeric
  • · Replies 4 ·
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4

High School What happens to a laser beam in a perfectly reflective box?

  • lunarcolonies
  • · Replies 7 ·
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7

Undergrad Understanding Light in a Sheet of Glass

  • niksoley
  • · Replies 5 ·
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5

Undergrad Fresh water and contact lenses

  • kjl
  • · Replies 5 ·
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5

Undergrad In michelson interferometer, does amplitude of of two waves is

  • Ravian
  • · Replies 1 ·
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1

High School Question: Can Sound Waves Produce Light?

  • kaffe
  • · Replies 4 ·
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4

Graduate What determines the refractive index of a material?

  • Ravian
  • · Replies 2 ·
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2

Graduate Does Light Experience Time Differently Than We Do?

  • zeromodz
  • · Replies 6 ·
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6

Where to buy cheap plastic lenses?

  • glueball8
  • · Replies 5 ·
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5

Graduate Why does light scatter when it hits nitrogen molecules?

  • cragar
  • · Replies 6 ·
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6

Graduate Does momentum decrease when light refracts to lower refractive index?

  • johng23
  • · Replies 17 ·
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17

Undergrad Can Humans Ever See Beyond the Visible Light Spectrum?

  • eric5438248
  • · Replies 10 ·
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10

Undergrad Why do red light waves bend less when passing through a prism?

  • Infrasound
  • · Replies 11 ·
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11

Undergrad Making a Hologram and Diffraction

  • cragar
  • · Replies 12 ·
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12

Undergrad Why photons can't afford more than light speed ?

  • oneat
  • · Replies 5 ·
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5

Graduate Xe Arc Lamp Safety: IR NIR Risk Analysis

  • cmos
  • · Replies 4 ·
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4

Undergrad Intensity of light vs amplitude

  • ap_cycles
  • · Replies 7 ·
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7

Graduate Does light have a frequency limit?

  • ShawnD
  • · Replies 34 ·
2
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34

Undergrad Rainbows and refraction of light

  • cepheid
  • · Replies 24 ·
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24

Undergrad If light does not experience time, why does it take time to get here?

  • MattAndMatthe
  • · Replies 16 ·
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16

High School Do 3D Glasses Use Diffraction?

  • cragar
  • · Replies 24 ·
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24

Graduate What happens when a photon hits a proton in glass?

  • cragar
  • · Replies 3 ·
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3

High School What Affects the Energy of a Photon?

  • FeDeX_LaTeX
  • · Replies 5 ·
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5

Graduate Do only electron-hole transitions produce true photons?

  • zoobyshoe
  • · Replies 46 ·
2
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46

High School Why can't we see our face in newspapers and walls?

  • Tush
  • · Replies 2 ·
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2

Graduate Likelihood of light being absorbed/re-emitted in 50 light years

  • epicurean
  • · Replies 5 ·
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5

Graduate What Would Happen if a Photon Was Caught Between Two Colliding Black Holes?

  • cragar
  • · Replies 4 ·
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4

High School Why do objects reflect certain wavelengths of light and absorb others?

  • alex7245
  • · Replies 9 ·
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9

Graduate The medium that light travels through is the EM field

  • cragar
  • · Replies 4 ·
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4

Undergrad Is RGBY TV Technology a Game Changer for Color Accuracy?

  • Archosaur
  • · Replies 11 ·
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11

High School Light Wave/Particle: Newton vs. Hooks

  • seto6
  • · Replies 1 ·
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1

Undergrad What is the Intensity of Light from a Cylindrical Source?

  • jakeman7676
  • · Replies 16 ·
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16

Undergrad UV Spectroscopy - Absorbance vs transmission

  • Moogie
  • · Replies 2 ·
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2

Undergrad What is the proportionality constant between intensity and amplitude in a Gaussian beam?

  • russel.arnold
  • · Replies 8 ·
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8

Undergrad What units does incident light have in UV spectroscopy

  • Moogie
  • · Replies 8 ·
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8

Undergrad Does mercury rise in a barometer column when accelerated upward?

  • ludic
  • · Replies 7 ·
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7

High School Why Does the Sky Look Blue? Rayleigh Scattering

  • cragar
  • · Replies 6 ·
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6

Undergrad Why does varying air density change the angle of light refraction?

  • cragar
  • · Replies 2 ·
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2

Undergrad Can a highspeed camera show a laserbeam moving?

  • Dav333
  • · Replies 22 ·
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22

Graduate Finding Normal Vector to Plane at Intersection Point for HeNe Laser Beam Path

  • cfphys
  • · Replies 6 ·
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6

High School Difference between holography and holograms

  • Awsom Guy
  • · Replies 7 ·
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7

Undergrad Transmitted colour of a solution

  • Moogie
  • · Replies 1 ·
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1

Graduate Does a photon experience time?

  • billbray
  • · Replies 21 ·
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21

Graduate Why does red light plus green light make yellow if photons don't interact?

  • cragar
  • · Replies 2 ·
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2

High School How do hologram pieces still show the whole image?

  • fawk3s
  • · Replies 1 ·
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1

Undergrad Illuminative Thrust: Can Light Provide Measurable Propulsion?

  • Jonnyb42
  • · Replies 1 ·
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1

Undergrad Circular polarization through a linear polarizer

  • groopion1
  • · Replies 1 ·
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1

Undergrad Can 3-D Interference Patterns Exist in Real Life?

  • russel.arnold
  • · Replies 1 ·
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1

Graduate Is blue shift a potential problem for near light speed travel?

  • superpaul3000
  • · Replies 4 ·
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4

Undergrad Interference pattern with some fringes missing

  • russel.arnold
  • · Replies 3 ·
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3

Graduate E-field of a laser pulse and Intensity

  • PhysMaster
  • · Replies 1 ·
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1

High School Why don't holograms reflect on clear floors like other light sources?

  • Chitose
  • · Replies 1 ·
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1

Undergrad Why Doesn't My Homemade Nitrogen Tube Light Up in the Microwave?

  • cragar
  • · Replies 3 ·
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3

Graduate Light: Speed and Sight Dilemma

  • Zencapop
  • · Replies 3 ·
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3

Graduate One has to wonder about photon interaction, and when to think of them

  • Science>All
  • · Replies 3 ·
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3

Undergrad Why do hot roads create mirror-like mirages?

  • GreatEscapist
  • · Replies 5 ·
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5

Graduate Could we reconstruct Earth's history from light it emitted?

  • zzzspawn
  • · Replies 7 ·
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7

Undergrad About light interacting with matter

  • snoopies622
  • · Replies 8 ·
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8

Undergrad Can reflecting first-order diffraction fringes create a second pattern?

  • cseanm
  • · Replies 3 ·
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3

Undergrad How much fiber optic length needed to deliver 60 watts from solar power?

  • Aleksee
  • · Replies 2 ·
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2

Graduate How do electrons emit both waves and particles?

  • ax3111
  • · Replies 15 ·
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15

Graduate Other Special Speeds? (than light)

  • Jonnyb42
  • · Replies 21 ·
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21

High School What does a light 'filter' do?

  • Magma828
  • · Replies 3 ·
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3

Graduate Single slit diffraction minima formula misunderstanding

  • HuaYongLi
  • · Replies 2 ·
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2

High School How long can a light ray travel

  • bleachigo
  • · Replies 4 ·
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4

Undergrad Why do radio waves pass through some walls but not others?

  • cragar
  • · Replies 2 ·
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2

Graduate What is the Intensity Distribution in Young's Experiment with Light?

  • nonequilibrium
  • · Replies 1 ·
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1

Graduate Near ballistic light/photon interference

  • watertreader
  • · Replies 4 ·
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4

Undergrad Why do optical interference colors need thin films rather than thick glass?

  • Prologue
  • · Replies 6 ·
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6

High School Light seems to bend around objects but why?

  • phoebus16
  • · Replies 19 ·
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19

Undergrad Photodiodes vs LEDs: Gallium Arsenide Sensitivity

  • jamesjd
  • · Replies 1 ·
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1

Graduate Destructive Interference and the Conservation of Energy

  • Rattus_norveg
  • · Replies 6 ·
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6

Graduate Wavefront Simulation using Geometry Optics and Physical Optics

  • Harmony
  • · Replies 1 ·
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1

Undergrad Does light regain speed and energy when leaving the atmosphere?

  • zas240
  • · Replies 11 ·
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11

Undergrad Why Does Time Seem to Slow Down in High-Stress Situations?

  • pharmdlb
  • · Replies 9 ·
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9

High School Is Light a Wave or a Series of Pulses?

  • Fuz
  • · Replies 12 ·
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12

High School Can Adding a Lens to a Small Solar Dish Increase Its Heat Output?

  • BurnIt0017
  • · Replies 3 ·
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3

Graduate What Happens to Starlight When Traveling Faster Than Light?

  • Scooby516
  • · Replies 9 ·
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9

Undergrad Visibility of IR light from remote controls

  • Trajork
  • · Replies 2 ·
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2

Undergrad Quantitative differences between atomic gas and semiconductor lasers

  • hhhmortal
  • · Replies 4 ·
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4

Undergrad Can Two Violins Create Perfect Harmony Without Destructive Interference?

  • Arctic
  • · Replies 6 ·
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6

Undergrad Bernoulli's equation and high velocity flights

  • waynetan
  • · Replies 4 ·
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4

Undergrad Will two out-of phase lights cancel out?

  • Negatron
  • · Replies 7 ·
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7

High School How does a homopolar motor work?

  • lalbatros
  • · Replies 7 ·
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7

Graduate Software for modeling light refraction through water in glass containers

  • eustis26
  • · Replies 3 ·
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3

High School Why does oil show so many colors?

  • jos93344
  • · Replies 7 ·
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7

High School Looking For A Solid Material Light Diffuser - Terminology?

  • golmschenk
  • · Replies 3 ·
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3

Undergrad What exactly is scattering of light?

  • lavster
  • · Replies 1 ·
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1

Graduate Understanding Laser Coherence Lengths and Improving Coherence

  • major_tom
  • · Replies 8 ·
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8

Graduate Do two out-of-phase laser beams cancel each other if shot in the same path?

  • cragar
  • · Replies 2 ·
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2

Undergrad What Causes Lightning Rods to Buzz?

  • PatentLawyer
  • · Replies 5 ·
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5

High School What are the physics in a kaleidoscope?

  • kl576
  • · Replies 1 ·
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1

Undergrad Single and double slit diffraction formulae

  • EdTheHead
  • · Replies 1 ·
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1